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1498 行
47 KiB
1498 行
47 KiB
using System;
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using UnityEngine;
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namespace Unity.UIWidgets.ui {
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public static class MathUtils {
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const float _valueNearlyZero = 1f / (1 << 12);
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public static bool isConvexPolygon(Offset[] polygonVerts, int polygonSize) {
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if (polygonSize < 3) {
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return false;
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}
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float lastArea = 0;
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float lastPerpDot = 0;
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int prevIndex = polygonSize - 1;
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int currIndex = 0;
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int nextIndex = 1;
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Offset origin = polygonVerts[0];
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Vector2 v0 = (polygonVerts[currIndex] - polygonVerts[prevIndex]).toVector();
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Vector2 v1 = (polygonVerts[nextIndex] - polygonVerts[currIndex]).toVector();
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Vector2 w0 = (polygonVerts[currIndex] - origin).toVector();
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Vector2 w1 = (polygonVerts[nextIndex] - origin).toVector();
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for (int i = 0; i < polygonSize; i++) {
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if (!polygonVerts[i].isFinite) {
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return false;
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}
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float perpDot = v0.cross(v1);
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if (lastPerpDot * perpDot < 0) {
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return false;
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}
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if (0 != perpDot) {
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lastPerpDot = perpDot;
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}
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float quadArea = w0.cross(w1);
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if (quadArea * lastArea < 0) {
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return false;
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}
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if (0 != quadArea) {
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lastArea = quadArea;
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}
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prevIndex = currIndex;
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currIndex = nextIndex;
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nextIndex = (currIndex + 1) % polygonSize;
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v0 = v1;
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v1 = (polygonVerts[nextIndex] - polygonVerts[currIndex]).toVector();
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w0 = w1;
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w1 = (polygonVerts[nextIndex] - origin).toVector();
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}
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return true;
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}
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public static float cross(this Vector2 vector1, Vector2 vector2) {
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return Vector3.Cross(new Vector3(vector1.x, vector1.y, 0f), new Vector3(vector2.x, vector2.y, 0f)).z;
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}
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public static bool valueNearlyZero(this float x, float? tolerance = null) {
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tolerance = tolerance ?? _valueNearlyZero;
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return Mathf.Abs(x) <= tolerance;
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}
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public static float clamp(this float value, float min, float max) {
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if (value < min) {
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value = min;
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}
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else if (value > max) {
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value = max;
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}
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return value;
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}
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public static int clamp(this int value, int min, int max) {
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if (value < min) {
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value = min;
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}
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else if (value > max) {
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value = max;
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}
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return value;
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}
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public static int abs(this int value) {
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return Mathf.Abs(value);
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}
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public static float abs(this float value) {
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return Mathf.Abs(value);
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}
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public static int sign(this float value) {
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return value == 0.0f ? 0 : value > 0.0f ? 1 : -1;
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}
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public static bool isInfinite(this float it) {
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return float.IsInfinity(it);
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}
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public static bool isFinite(this float it) {
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return !float.IsInfinity(it);
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}
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public static bool isNaN(this float it) {
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return float.IsNaN(it);
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}
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public static float lerpFloat(float a, float b, float t) {
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return a + (b - a) * t;
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}
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public static float? lerpNullableFloat(float? a, float? b, float t) {
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if (a == null && b == null) {
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return null;
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}
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a = a ?? b;
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b = b ?? a;
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return a + (b - a) * t;
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}
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public static int round(this float value) {
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return Mathf.RoundToInt(value);
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}
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public static int floor(this float value) {
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return Mathf.FloorToInt(value);
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}
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public static int ceil(this float value) {
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return Mathf.CeilToInt(value);
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}
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}
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public abstract class OffsetBase : IEquatable<OffsetBase> {
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protected OffsetBase(float _dx, float _dy) {
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this._dx = _dx;
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this._dy = _dy;
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}
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protected readonly float _dx;
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protected readonly float _dy;
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public bool isInfinite {
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get { return float.IsInfinity(this._dx) || float.IsInfinity(this._dy); }
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}
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public bool isFinite {
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get { return !float.IsInfinity(this._dx) && !float.IsInfinity(this._dy); }
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}
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public static bool operator <(OffsetBase a, OffsetBase b) {
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return a._dx < b._dx && a._dy < b._dy;
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}
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public static bool operator <=(OffsetBase a, OffsetBase b) {
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return a._dx <= b._dx && a._dy <= b._dy;
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}
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public static bool operator >(OffsetBase a, OffsetBase b) {
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return a._dx > b._dx && a._dy > b._dy;
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}
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public static bool operator >=(OffsetBase a, OffsetBase b) {
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return a._dx >= b._dx && a._dy >= b._dy;
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}
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public bool Equals(OffsetBase other) {
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if (ReferenceEquals(null, other)) {
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return false;
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}
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if (ReferenceEquals(this, other)) {
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return true;
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}
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return this._dx.Equals(other._dx) && this._dy.Equals(other._dy);
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}
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public override bool Equals(object obj) {
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if (ReferenceEquals(null, obj)) {
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return false;
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}
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if (ReferenceEquals(this, obj)) {
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return true;
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}
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if (obj.GetType() != this.GetType()) {
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return false;
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}
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return this.Equals((OffsetBase) obj);
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}
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public override int GetHashCode() {
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unchecked {
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return (this._dx.GetHashCode() * 397) ^ this._dy.GetHashCode();
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}
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}
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public static bool operator ==(OffsetBase left, OffsetBase right) {
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return Equals(left, right);
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}
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public static bool operator !=(OffsetBase left, OffsetBase right) {
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return !Equals(left, right);
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}
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public override string ToString() {
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return $"{this.GetType()}({this._dx:F1}, {this._dy:F1})";
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}
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}
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public class Offset : OffsetBase, IEquatable<Offset> {
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public Offset(float dx, float dy) : base(dx, dy) {
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}
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public float dx {
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get { return this._dx; }
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}
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public float dy {
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get { return this._dy; }
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}
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public float distance {
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get { return Mathf.Sqrt(this._dx * this._dx + this._dy * this._dy); }
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}
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public float distanceSquared {
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get { return this._dx * this._dx + this._dy * this._dy; }
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}
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public static readonly Offset zero = new Offset(0.0f, 0.0f);
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public static readonly Offset infinite = new Offset(float.PositiveInfinity, float.PositiveInfinity);
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public Offset scale(float scaleX, float? scaleY = null) {
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scaleY = scaleY ?? scaleX;
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return new Offset(this.dx * scaleX, this.dy * scaleY.Value);
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}
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public Offset translate(float translateX, float translateY) {
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return new Offset(this.dx + translateX, this.dy + translateY);
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}
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public static Offset operator -(Offset a) {
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return new Offset(-a.dx, -a.dy);
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}
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public static Offset operator -(Offset a, Offset b) {
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return new Offset(a.dx - b.dx, a.dy - b.dy);
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}
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public static Offset operator +(Offset a, Offset b) {
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return new Offset(a.dx + b.dx, a.dy + b.dy);
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}
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public static Offset operator *(Offset a, float operand) {
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return new Offset(a.dx * operand, a.dy * operand);
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}
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public static Offset operator /(Offset a, float operand) {
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return new Offset(a.dx / operand, a.dy / operand);
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}
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public static Rect operator &(Offset a, Size other) {
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return Rect.fromLTWH(a.dx, a.dy, other.width, other.height);
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}
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public static Offset lerp(Offset a, Offset b, float t) {
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if (a == null && b == null) {
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return null;
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}
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if (a == null) {
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return b * t;
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}
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if (b == null) {
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return a * (1.0f - t);
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}
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return new Offset(MathUtils.lerpFloat(a.dx, b.dx, t), MathUtils.lerpFloat(a.dy, b.dy, t));
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}
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public bool Equals(Offset other) {
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return base.Equals(other);
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}
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public override bool Equals(object obj) {
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if (ReferenceEquals(null, obj)) {
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return false;
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}
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if (ReferenceEquals(this, obj)) {
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return true;
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}
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if (obj.GetType() != this.GetType()) {
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return false;
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}
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return this.Equals((Offset) obj);
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}
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public override int GetHashCode() {
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return base.GetHashCode();
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}
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public static bool operator ==(Offset left, Offset right) {
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return Equals(left, right);
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}
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public static bool operator !=(Offset left, Offset right) {
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return !Equals(left, right);
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}
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public override string ToString() {
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return $"Offset({this._dx:F1}, {this._dy:F1})";
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}
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}
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public class Size : OffsetBase, IEquatable<Size> {
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public Size(float width, float height) : base(width, height) {
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}
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public static Size copy(Size source) {
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return new Size(source.width, source.height);
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}
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public static Size square(float dimension) {
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return new Size(dimension, dimension);
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}
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public static Size fromWidth(float width) {
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return new Size(width, float.PositiveInfinity);
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}
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public static Size fromHeight(float height) {
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return new Size(float.PositiveInfinity, height);
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}
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public static Size fromRadius(float radius) {
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return new Size(radius * 2, radius * 2);
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}
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public float width {
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get { return this._dx; }
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}
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public float height {
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get { return this._dy; }
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}
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public static readonly Size zero = new Size(0.0f, 0.0f);
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public static readonly Size infinite = new Size(float.PositiveInfinity, float.PositiveInfinity);
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public bool isEmpty {
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get { return this.width <= 0.0 || this.height <= 0.0; }
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}
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public static Size operator -(Size a, Offset b) {
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return new Size(a.width - b.dx, a.height - b.dy);
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}
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public static Size operator +(Size a, Offset b) {
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return new Size(a.width + b.dx, a.height + b.dy);
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}
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public static Offset operator -(Size a, Size b) {
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return new Offset(a.width - b.width, a.height - b.height);
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}
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public static Size operator *(Size a, float operand) {
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return new Size(a.width * operand, a.height * operand);
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}
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public static Size operator /(Size a, float operand) {
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return new Size(a.width / operand, a.height / operand);
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}
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public float shortestSide {
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get { return Mathf.Min(this.width.abs(), this.height.abs()); }
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}
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public float longestSide {
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get { return Mathf.Max(this.width.abs(), this.height.abs()); }
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}
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public Offset topLeft(Offset origin) {
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return origin;
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}
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public Offset topCenter(Offset origin) {
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return new Offset(origin.dx + this.width / 2.0f, origin.dy);
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}
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public Offset topRight(Offset origin) {
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return new Offset(origin.dx + this.width, origin.dy);
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}
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public Offset centerLeft(Offset origin) {
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return new Offset(origin.dx, origin.dy + this.height / 2.0f);
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}
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public Offset center(Offset origin) {
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return new Offset(origin.dx + this.width / 2.0f, origin.dy + this.height / 2.0f);
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}
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public Offset centerRight(Offset origin) {
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return new Offset(origin.dx + this.width, origin.dy + this.height / 2.0f);
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}
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public Offset bottomLeft(Offset origin) {
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return new Offset(origin.dx, origin.dy + this.height);
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}
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public Offset bottomCenter(Offset origin) {
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return new Offset(origin.dx + this.width / 2.0f, origin.dy + this.height);
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}
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public Offset bottomRight(Offset origin) {
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return new Offset(origin.dx + this.width, origin.dy + this.height);
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}
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public bool contains(Offset offset) {
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return offset.dx >= 0.0 && offset.dx < this.width && offset.dy >= 0.0 && offset.dy < this.height;
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}
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public Size flipped {
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get { return new Size(this.height, this.width); }
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}
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public static Size lerp(Size a, Size b, float t) {
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if (a == null && b == null) {
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return null;
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}
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if (a == null) {
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return b * t;
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}
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if (b == null) {
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return a * (1.0f - t);
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}
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return new Size(MathUtils.lerpFloat(a.width, b.width, t), MathUtils.lerpFloat(a.height, b.height, t));
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}
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public bool Equals(Size other) {
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return base.Equals(other);
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}
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public override bool Equals(object obj) {
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if (ReferenceEquals(null, obj)) {
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return false;
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}
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if (ReferenceEquals(this, obj)) {
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return true;
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}
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if (obj.GetType() != this.GetType()) {
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return false;
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}
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return this.Equals((Size) obj);
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}
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public override int GetHashCode() {
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return base.GetHashCode();
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}
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public static bool operator ==(Size left, Size right) {
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return Equals(left, right);
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}
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public static bool operator !=(Size left, Size right) {
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return !Equals(left, right);
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}
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public override string ToString() {
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return $"Size({this._dx:F1}, {this._dy:F1})";
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}
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}
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public class Rect : IEquatable<Rect> {
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Rect(float left, float top, float right, float bottom) {
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this.left = left;
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this.top = top;
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this.right = right;
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this.bottom = bottom;
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}
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public static Rect fromLTRB(float left, float top, float right, float bottom) {
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return new Rect(left, top, right, bottom);
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}
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public static Rect fromLTWH(float left, float top, float width, float height) {
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return new Rect(left, top, left + width, top + height);
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}
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public static Rect fromCircle(Offset center, float radius) {
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return new Rect(center.dx - radius, center.dy - radius, center.dx + radius, center.dy + radius);
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}
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public static Rect fromPoints(Offset a, Offset b) {
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return new Rect(
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Mathf.Min(a.dx, b.dx),
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Mathf.Min(a.dy, b.dy),
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Mathf.Max(a.dx, b.dx),
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Mathf.Max(a.dy, b.dy)
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);
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}
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public readonly float left;
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public readonly float top;
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public readonly float right;
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public readonly float bottom;
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public float width {
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get { return this.right - this.left; }
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}
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public float height {
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get { return this.bottom - this.top; }
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}
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public Size size {
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get { return new Size(this.width, this.height); }
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}
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public float area {
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get { return this.width * this.height; }
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}
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public float margin {
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get { return this.width + this.height; }
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}
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public static readonly Rect zero = new Rect(0, 0, 0, 0);
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public static readonly Rect one = new Rect(0, 0, 1, 1);
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public static readonly Rect infinity = new Rect(float.NegativeInfinity, float.NegativeInfinity,
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float.PositiveInfinity, float.PositiveInfinity);
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public const float _giantScalar = 1.0E+9f;
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public static readonly Rect largest =
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fromLTRB(-_giantScalar, -_giantScalar, _giantScalar, _giantScalar);
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public bool isInfinite {
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get {
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return float.IsInfinity(this.left)
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|| float.IsInfinity(this.top)
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|| float.IsInfinity(this.right)
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|| float.IsInfinity(this.bottom);
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}
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}
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public bool isFinite {
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get { return !this.isInfinite; }
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}
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public bool isEmpty {
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get { return this.left >= this.right || this.top >= this.bottom; }
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}
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public Rect shift(Offset offset) {
|
|
return fromLTRB(this.left + offset.dx, this.top + offset.dy, this.right + offset.dx,
|
|
this.bottom + offset.dy);
|
|
}
|
|
|
|
public Rect translate(float translateX, float translateY) {
|
|
return fromLTRB(this.left + translateX, this.top + translateY, this.right + translateX,
|
|
this.bottom + translateY);
|
|
}
|
|
|
|
public Rect scale(float scaleX, float? scaleY = null) {
|
|
scaleY = scaleY ?? scaleX;
|
|
return fromLTRB(
|
|
this.left * scaleX, this.top * scaleY.Value,
|
|
this.right * scaleX, this.bottom * scaleY.Value);
|
|
}
|
|
|
|
public Rect outset(float dx, float dy) {
|
|
return new Rect(this.left - dx, this.top - dy, this.right + dx, this.bottom + dy);
|
|
}
|
|
|
|
public Offset[] toQuad() {
|
|
Offset[] dst = new Offset[4];
|
|
dst[0] = new Offset(this.left, this.top);
|
|
dst[1] = new Offset(this.right, this.top);
|
|
dst[2] = new Offset(this.right, this.bottom);
|
|
dst[3] = new Offset(this.left, this.bottom);
|
|
return dst;
|
|
}
|
|
|
|
|
|
public Rect inflate(float delta) {
|
|
return fromLTRB(this.left - delta, this.top - delta, this.right + delta, this.bottom + delta);
|
|
}
|
|
|
|
public Rect deflate(float delta) {
|
|
return this.inflate(-delta);
|
|
}
|
|
|
|
public Rect intersect(Rect other) {
|
|
return fromLTRB(
|
|
Mathf.Max(this.left, other.left),
|
|
Mathf.Max(this.top, other.top),
|
|
Mathf.Min(this.right, other.right),
|
|
Mathf.Min(this.bottom, other.bottom)
|
|
);
|
|
}
|
|
|
|
public Rect expandToInclude(Rect other) {
|
|
if (this.isEmpty) {
|
|
return other;
|
|
}
|
|
|
|
if (other == null || other.isEmpty) {
|
|
return this;
|
|
}
|
|
|
|
return fromLTRB(
|
|
Mathf.Min(this.left, other.left),
|
|
Mathf.Min(this.top, other.top),
|
|
Mathf.Max(this.right, other.right),
|
|
Mathf.Max(this.bottom, other.bottom)
|
|
);
|
|
}
|
|
|
|
public bool overlaps(Rect other) {
|
|
if (this.right <= other.left || other.right <= this.left) {
|
|
return false;
|
|
}
|
|
|
|
if (this.bottom <= other.top || other.bottom <= this.top) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
public float shortestSide {
|
|
get { return Mathf.Min(Mathf.Abs(this.width), Mathf.Abs(this.height)); }
|
|
}
|
|
|
|
public float longestSide {
|
|
get { return Mathf.Max(Mathf.Abs(this.width), Mathf.Abs(this.height)); }
|
|
}
|
|
|
|
public Offset topLeft {
|
|
get { return new Offset(this.left, this.top); }
|
|
}
|
|
|
|
public Offset topCenter {
|
|
get { return new Offset(this.left + this.width / 2.0f, this.top); }
|
|
}
|
|
|
|
public Offset topRight {
|
|
get { return new Offset(this.right, this.top); }
|
|
}
|
|
|
|
public Offset centerLeft {
|
|
get { return new Offset(this.left, this.top + this.height / 2.0f); }
|
|
}
|
|
|
|
public Offset center {
|
|
get { return new Offset(this.left + this.width / 2.0f, this.top + this.height / 2.0f); }
|
|
}
|
|
|
|
public Offset centerRight {
|
|
get { return new Offset(this.right, this.bottom); }
|
|
}
|
|
|
|
public Offset bottomLeft {
|
|
get { return new Offset(this.left, this.bottom); }
|
|
}
|
|
|
|
public Offset bottomCenter {
|
|
get { return new Offset(this.left + this.width / 2.0f, this.bottom); }
|
|
}
|
|
|
|
public Offset bottomRight {
|
|
get { return new Offset(this.right, this.bottom); }
|
|
}
|
|
|
|
public bool contains(Offset offset) {
|
|
return offset.dx >= this.left && offset.dx < this.right && offset.dy >= this.top && offset.dy < this.bottom;
|
|
}
|
|
|
|
public bool containsInclusive(Offset offset) {
|
|
return offset.dx >= this.left && offset.dx <= this.right && offset.dy >= this.top &&
|
|
offset.dy <= this.bottom;
|
|
}
|
|
|
|
public bool contains(Rect rect) {
|
|
return this.contains(rect.topLeft) && this.contains(rect.bottomRight);
|
|
}
|
|
|
|
public Rect round() {
|
|
return fromLTRB(
|
|
Mathf.Round(this.left), Mathf.Round(this.top),
|
|
Mathf.Round(this.right), Mathf.Round(this.bottom));
|
|
}
|
|
|
|
public Rect roundOut() {
|
|
return fromLTRB(
|
|
Mathf.Floor(this.left), Mathf.Floor(this.top),
|
|
Mathf.Ceil(this.right), Mathf.Ceil(this.bottom));
|
|
}
|
|
|
|
public Rect roundOutScale(float scale) {
|
|
return fromLTRB(
|
|
Mathf.Floor(this.left * scale),
|
|
Mathf.Floor(this.top * scale),
|
|
Mathf.Ceil(this.right * scale),
|
|
Mathf.Ceil(this.bottom * scale));
|
|
}
|
|
|
|
public Rect withDevicePixelRatio(float devicePixelRatio) {
|
|
return fromLTRB(
|
|
Mathf.Floor(this.left * devicePixelRatio) / devicePixelRatio,
|
|
Mathf.Floor(this.top * devicePixelRatio) / devicePixelRatio,
|
|
Mathf.Ceil(this.right * devicePixelRatio) / devicePixelRatio,
|
|
Mathf.Ceil(this.bottom * devicePixelRatio) / devicePixelRatio);
|
|
}
|
|
|
|
public Rect roundIn() {
|
|
return fromLTRB(
|
|
Mathf.Ceil(this.left), Mathf.Ceil(this.top),
|
|
Mathf.Floor(this.right), Mathf.Floor(this.bottom));
|
|
}
|
|
|
|
public Rect normalize() {
|
|
if (this.left <= this.right && this.top <= this.bottom) {
|
|
return this;
|
|
}
|
|
|
|
return fromLTRB(
|
|
Mathf.Min(this.left, this.right),
|
|
Mathf.Min(this.top, this.bottom),
|
|
Mathf.Max(this.left, this.right),
|
|
Mathf.Max(this.top, this.bottom)
|
|
);
|
|
}
|
|
|
|
public static Rect lerp(Rect a, Rect b, float t) {
|
|
if (a == null && b == null) {
|
|
return null;
|
|
}
|
|
|
|
if (a == null) {
|
|
return fromLTRB(b.left * t, b.top * t, b.right * t, b.bottom * t);
|
|
}
|
|
|
|
if (b == null) {
|
|
float k = 1.0f - t;
|
|
return fromLTRB(a.left * k, a.top * k, a.right * k, a.bottom * k);
|
|
}
|
|
|
|
return fromLTRB(
|
|
MathUtils.lerpFloat(a.left, b.left, t),
|
|
MathUtils.lerpFloat(a.top, b.top, t),
|
|
MathUtils.lerpFloat(a.right, b.right, t),
|
|
MathUtils.lerpFloat(a.bottom, b.bottom, t)
|
|
);
|
|
}
|
|
|
|
public bool Equals(Rect other) {
|
|
if (ReferenceEquals(null, other)) {
|
|
return false;
|
|
}
|
|
|
|
if (ReferenceEquals(this, other)) {
|
|
return true;
|
|
}
|
|
|
|
return this.left.Equals(other.left) && this.top.Equals(other.top) && this.right.Equals(other.right) &&
|
|
this.bottom.Equals(other.bottom);
|
|
}
|
|
|
|
public override bool Equals(object obj) {
|
|
if (ReferenceEquals(null, obj)) {
|
|
return false;
|
|
}
|
|
|
|
if (ReferenceEquals(this, obj)) {
|
|
return true;
|
|
}
|
|
|
|
if (obj.GetType() != this.GetType()) {
|
|
return false;
|
|
}
|
|
|
|
return this.Equals((Rect) obj);
|
|
}
|
|
|
|
public override int GetHashCode() {
|
|
unchecked {
|
|
var hashCode = this.left.GetHashCode();
|
|
hashCode = (hashCode * 397) ^ this.top.GetHashCode();
|
|
hashCode = (hashCode * 397) ^ this.right.GetHashCode();
|
|
hashCode = (hashCode * 397) ^ this.bottom.GetHashCode();
|
|
return hashCode;
|
|
}
|
|
}
|
|
|
|
public static bool operator ==(Rect left, Rect right) {
|
|
return Equals(left, right);
|
|
}
|
|
|
|
public static bool operator !=(Rect left, Rect right) {
|
|
return !Equals(left, right);
|
|
}
|
|
|
|
public override string ToString() {
|
|
return "Rect.fromLTRB(" + this.left.ToString("0.0") + ", " + this.top.ToString("0.0") + ", " +
|
|
this.right.ToString("0.0") + ", " + this.bottom.ToString("0.0") + ")";
|
|
}
|
|
}
|
|
|
|
public class Radius : IEquatable<Radius> {
|
|
Radius(float x, float y) {
|
|
this.x = x;
|
|
this.y = y;
|
|
}
|
|
|
|
public static Radius circular(float radius) {
|
|
return elliptical(radius, radius);
|
|
}
|
|
|
|
public static Radius elliptical(float x, float y) {
|
|
return new Radius(x, y);
|
|
}
|
|
|
|
public readonly float x;
|
|
public readonly float y;
|
|
|
|
public static readonly Radius zero = circular(0.0f);
|
|
|
|
public static Radius operator -(Radius a) {
|
|
return elliptical(-a.x, -a.y);
|
|
}
|
|
|
|
public static Radius operator -(Radius a, Radius b) {
|
|
return elliptical(a.x - b.x, a.y - b.y);
|
|
}
|
|
|
|
public static Radius operator -(Radius a, float b) {
|
|
return elliptical(a.x - b, a.y - b);
|
|
}
|
|
|
|
public static Radius operator +(Radius a, Radius b) {
|
|
return elliptical(a.x + b.x, a.y + b.y);
|
|
}
|
|
|
|
public static Radius operator +(Radius a, float b) {
|
|
return elliptical(a.x + b, a.y + b);
|
|
}
|
|
|
|
public static Radius operator *(Radius a, Radius b) {
|
|
return elliptical(a.x * b.x, a.y * b.y);
|
|
}
|
|
|
|
public static Radius operator *(Radius a, float b) {
|
|
return elliptical(a.x * b, a.y * b);
|
|
}
|
|
|
|
public static Radius operator /(Radius a, Radius b) {
|
|
return elliptical(a.x / b.x, a.y / b.y);
|
|
}
|
|
|
|
public static Radius operator /(Radius a, float b) {
|
|
return elliptical(a.x / b, a.y / b);
|
|
}
|
|
|
|
public static Radius operator %(Radius a, Radius b) {
|
|
return elliptical(a.x % b.x, a.y % b.y);
|
|
}
|
|
|
|
public static Radius operator %(Radius a, float b) {
|
|
return elliptical(a.x % b, a.y % b);
|
|
}
|
|
|
|
public static Radius lerp(Radius a, Radius b, float t) {
|
|
if (a == null && b == null) {
|
|
return null;
|
|
}
|
|
|
|
if (a == null) {
|
|
return elliptical(b.x * t, b.y * t);
|
|
}
|
|
|
|
if (b == null) {
|
|
float k = 1.0f - t;
|
|
return elliptical(a.x * k, a.y * k);
|
|
}
|
|
|
|
return elliptical(
|
|
MathUtils.lerpFloat(a.x, b.x, t),
|
|
MathUtils.lerpFloat(a.y, b.y, t)
|
|
);
|
|
}
|
|
|
|
public bool Equals(Radius other) {
|
|
if (ReferenceEquals(null, other)) {
|
|
return false;
|
|
}
|
|
|
|
if (ReferenceEquals(this, other)) {
|
|
return true;
|
|
}
|
|
|
|
return this.x.Equals(other.x) && this.y.Equals(other.y);
|
|
}
|
|
|
|
public override bool Equals(object obj) {
|
|
if (ReferenceEquals(null, obj)) {
|
|
return false;
|
|
}
|
|
|
|
if (ReferenceEquals(this, obj)) {
|
|
return true;
|
|
}
|
|
|
|
if (obj.GetType() != this.GetType()) {
|
|
return false;
|
|
}
|
|
|
|
return this.Equals((Radius) obj);
|
|
}
|
|
|
|
public override int GetHashCode() {
|
|
unchecked {
|
|
return (this.x.GetHashCode() * 397) ^ this.y.GetHashCode();
|
|
}
|
|
}
|
|
|
|
public static bool operator ==(Radius left, Radius right) {
|
|
return Equals(left, right);
|
|
}
|
|
|
|
public static bool operator !=(Radius left, Radius right) {
|
|
return !Equals(left, right);
|
|
}
|
|
|
|
public override string ToString() {
|
|
return this.x == this.y
|
|
? $"Radius.circular({this.x:F1})"
|
|
: $"Radius.elliptical({this.x:F1}, ${this.y:F1})";
|
|
}
|
|
}
|
|
|
|
public class RRect : IEquatable<RRect> {
|
|
RRect(float left, float top, float right, float bottom,
|
|
Radius tlRadius = null, Radius trRadius = null, Radius brRadius = null, Radius blRadius = null) {
|
|
this.left = left;
|
|
this.top = top;
|
|
this.right = right;
|
|
this.bottom = bottom;
|
|
this.tlRadius = tlRadius ?? Radius.zero;
|
|
this.trRadius = trRadius ?? Radius.zero;
|
|
this.brRadius = brRadius ?? Radius.zero;
|
|
this.blRadius = blRadius ?? Radius.zero;
|
|
}
|
|
|
|
RRect(float left, float top, float right, float bottom,
|
|
float? tlRadius = null, float? trRadius = null, float? brRadius = null, float? blRadius = null) {
|
|
this.left = left;
|
|
this.top = top;
|
|
this.right = right;
|
|
this.bottom = bottom;
|
|
this.tlRadius = tlRadius != null ? Radius.circular(tlRadius.Value) : Radius.zero;
|
|
this.trRadius = trRadius != null ? Radius.circular(trRadius.Value) : Radius.zero;
|
|
this.brRadius = brRadius != null ? Radius.circular(brRadius.Value) : Radius.zero;
|
|
this.blRadius = blRadius != null ? Radius.circular(blRadius.Value) : Radius.zero;
|
|
}
|
|
|
|
|
|
public static RRect fromLTRBXY(
|
|
float left, float top, float right, float bottom,
|
|
float radiusX, float radiusY) {
|
|
var radius = Radius.elliptical(radiusX, radiusY);
|
|
return new RRect(left, top, right, bottom,
|
|
radius, radius, radius, radius);
|
|
}
|
|
|
|
|
|
public static RRect fromLTRBR(
|
|
float left, float top, float right, float bottom, Radius radius) {
|
|
return new RRect(left, top, right, bottom,
|
|
radius, radius, radius, radius);
|
|
}
|
|
|
|
public static RRect fromLTRBR(
|
|
float left, float top, float right, float bottom, float radius) {
|
|
var r = Radius.circular(radius);
|
|
return new RRect(left, top, right, bottom,
|
|
r, r, r, r);
|
|
}
|
|
|
|
public static RRect fromRectXY(Rect rect, float radiusX, float radiusY) {
|
|
var radius = Radius.elliptical(radiusX, radiusY);
|
|
return new RRect(rect.left, rect.top, rect.right, rect.bottom,
|
|
radius, radius, radius, radius);
|
|
}
|
|
|
|
public static RRect fromRect(Rect rect) {
|
|
return new RRect(rect.left, rect.top, rect.right, rect.bottom, (Radius) null);
|
|
}
|
|
|
|
public static RRect fromRectAndRadius(Rect rect, Radius radius) {
|
|
return new RRect(rect.left, rect.top, rect.right, rect.bottom,
|
|
radius, radius, radius, radius);
|
|
}
|
|
|
|
public static RRect fromRectAndRadius(Rect rect, float radius) {
|
|
var r = Radius.circular(radius);
|
|
return new RRect(rect.left, rect.top, rect.right, rect.bottom,
|
|
r, r, r, r);
|
|
}
|
|
|
|
public static RRect fromLTRBAndCorners(
|
|
float left, float top, float right, float bottom,
|
|
Radius topLeft = null, Radius topRight = null, Radius bottomRight = null, Radius bottomLeft = null) {
|
|
return new RRect(left, top, right, bottom,
|
|
topLeft, topRight, bottomRight, bottomLeft);
|
|
}
|
|
|
|
public static RRect fromLTRBAndCorners(
|
|
float left, float top, float right, float bottom,
|
|
float? topLeft = null, float? topRight = null, float? bottomRight = null, float? bottomLeft = null) {
|
|
return new RRect(left, top, right, bottom,
|
|
topLeft, topRight, bottomRight, bottomLeft);
|
|
}
|
|
|
|
public static RRect fromRectAndCorners(
|
|
Rect rect,
|
|
Radius topLeft = null, Radius topRight = null, Radius bottomRight = null, Radius bottomLeft = null) {
|
|
return new RRect(rect.left, rect.top, rect.right, rect.bottom,
|
|
topLeft, topRight, bottomRight, bottomLeft);
|
|
}
|
|
|
|
public static RRect fromRectAndCorners(
|
|
Rect rect,
|
|
float? topLeft = null, float? topRight = null, float? bottomRight = null, float? bottomLeft = null) {
|
|
return new RRect(rect.left, rect.top, rect.right, rect.bottom,
|
|
topLeft, topRight, bottomRight, bottomLeft);
|
|
}
|
|
|
|
public readonly float left;
|
|
public readonly float top;
|
|
public readonly float right;
|
|
public readonly float bottom;
|
|
|
|
public readonly Radius tlRadius;
|
|
public readonly Radius trRadius;
|
|
public readonly Radius brRadius;
|
|
public readonly Radius blRadius;
|
|
|
|
public float tlRadiusX {
|
|
get { return this.tlRadius.x; }
|
|
}
|
|
|
|
public float tlRadiusY {
|
|
get { return this.tlRadius.y; }
|
|
}
|
|
|
|
public float trRadiusX {
|
|
get { return this.trRadius.x; }
|
|
}
|
|
|
|
public float trRadiusY {
|
|
get { return this.trRadius.y; }
|
|
}
|
|
|
|
public float blRadiusX {
|
|
get { return this.blRadius.x; }
|
|
}
|
|
|
|
public float blRadiusY {
|
|
get { return this.blRadius.y; }
|
|
}
|
|
|
|
public float brRadiusX {
|
|
get { return this.brRadius.x; }
|
|
}
|
|
|
|
public float brRadiusY {
|
|
get { return this.brRadius.y; }
|
|
}
|
|
|
|
public static readonly RRect zero = new RRect(0, 0, 0, 0, (Radius) null);
|
|
|
|
public RRect shift(Offset offset) {
|
|
return fromLTRBAndCorners(
|
|
this.left + offset.dx,
|
|
this.top + offset.dy,
|
|
this.right + offset.dx,
|
|
this.bottom + offset.dy,
|
|
this.tlRadius,
|
|
this.trRadius,
|
|
this.brRadius,
|
|
this.blRadius
|
|
);
|
|
}
|
|
|
|
public RRect inflate(float delta) {
|
|
return fromLTRBAndCorners(
|
|
this.left - delta,
|
|
this.top - delta,
|
|
this.right + delta,
|
|
this.bottom + delta,
|
|
this.tlRadius + delta,
|
|
this.trRadius + delta,
|
|
this.brRadius + delta,
|
|
this.blRadius + delta
|
|
);
|
|
}
|
|
|
|
public RRect deflate(float delta) {
|
|
return this.inflate(-delta);
|
|
}
|
|
|
|
public float width {
|
|
get { return this.right - this.left; }
|
|
}
|
|
|
|
public float height {
|
|
get { return this.bottom - this.top; }
|
|
}
|
|
|
|
public Rect outerRect {
|
|
get { return Rect.fromLTRB(this.left, this.top, this.right, this.bottom); }
|
|
}
|
|
|
|
public Rect safeInnerRect {
|
|
get {
|
|
const float kInsetFactor = 0.29289321881f; // 1-cos(pi/4)
|
|
|
|
float leftRadius = Mathf.Max(this.blRadiusX, this.tlRadiusX);
|
|
float topRadius = Mathf.Max(this.tlRadiusY, this.trRadiusY);
|
|
float rightRadius = Mathf.Max(this.trRadiusX, this.brRadiusX);
|
|
float bottomRadius = Mathf.Max(this.brRadiusY, this.blRadiusY);
|
|
|
|
return Rect.fromLTRB(
|
|
this.left + leftRadius * kInsetFactor,
|
|
this.top + topRadius * kInsetFactor,
|
|
this.right - rightRadius * kInsetFactor,
|
|
this.bottom - bottomRadius * kInsetFactor
|
|
);
|
|
}
|
|
}
|
|
|
|
public Rect middleRect {
|
|
get {
|
|
float leftRadius = Mathf.Max(this.blRadiusX, this.tlRadiusX);
|
|
float topRadius = Mathf.Max(this.tlRadiusY, this.trRadiusY);
|
|
float rightRadius = Mathf.Max(this.trRadiusX, this.brRadiusX);
|
|
float bottomRadius = Mathf.Max(this.brRadiusY, this.blRadiusY);
|
|
|
|
return Rect.fromLTRB(
|
|
this.left + leftRadius,
|
|
this.top + topRadius,
|
|
this.right - rightRadius,
|
|
this.bottom - bottomRadius
|
|
);
|
|
}
|
|
}
|
|
|
|
public Rect wideMiddleRect {
|
|
get {
|
|
float topRadius = Mathf.Max(this.tlRadiusY, this.trRadiusY);
|
|
float bottomRadius = Mathf.Max(this.brRadiusY, this.blRadiusY);
|
|
|
|
return Rect.fromLTRB(
|
|
this.left,
|
|
this.top + topRadius,
|
|
this.right,
|
|
this.bottom - bottomRadius
|
|
);
|
|
}
|
|
}
|
|
|
|
public Rect tallMiddleRect {
|
|
get {
|
|
float leftRadius = Mathf.Max(this.blRadiusX, this.tlRadiusX);
|
|
float rightRadius = Mathf.Max(this.trRadiusX, this.brRadiusX);
|
|
|
|
return Rect.fromLTRB(
|
|
this.left + leftRadius,
|
|
this.top,
|
|
this.right - rightRadius,
|
|
this.bottom
|
|
);
|
|
}
|
|
}
|
|
|
|
public bool isEmpty {
|
|
get { return this.left >= this.right || this.top >= this.bottom; }
|
|
}
|
|
|
|
public bool isFinite {
|
|
get {
|
|
return this.left.isFinite()
|
|
&& this.top.isFinite()
|
|
&& this.right.isFinite()
|
|
&& this.bottom.isFinite();
|
|
}
|
|
}
|
|
|
|
public bool isInfinite {
|
|
get { return !this.isFinite; }
|
|
}
|
|
|
|
public bool isRect {
|
|
get {
|
|
return this.tlRadius == Radius.zero &&
|
|
this.trRadius == Radius.zero &&
|
|
this.blRadius == Radius.zero &&
|
|
this.brRadius == Radius.zero;
|
|
}
|
|
}
|
|
|
|
public bool isStadium {
|
|
get {
|
|
return this.tlRadius == this.trRadius
|
|
&& this.trRadius == this.brRadius
|
|
&& this.brRadius == this.blRadius
|
|
&& (this.width <= 2.0 * this.tlRadiusX || this.height <= 2.0 * this.tlRadiusY);
|
|
}
|
|
}
|
|
|
|
public bool isEllipse {
|
|
get {
|
|
return this.tlRadius == this.trRadius
|
|
&& this.trRadius == this.brRadius
|
|
&& this.brRadius == this.blRadius
|
|
&& (this.width <= 2.0 * this.tlRadiusX && this.height <= 2.0 * this.tlRadiusY);
|
|
}
|
|
}
|
|
|
|
public bool isCircle {
|
|
get { return this.width == this.height && this.isEllipse; }
|
|
}
|
|
|
|
public float shortestSide {
|
|
get { return Mathf.Min(this.width.abs(), this.height.abs()); }
|
|
}
|
|
|
|
public float longestSide {
|
|
get { return Mathf.Max(this.width.abs(), this.height.abs()); }
|
|
}
|
|
|
|
public Offset center {
|
|
get { return new Offset(this.left + this.width / 2.0f, this.top + this.height / 2.0f); }
|
|
}
|
|
|
|
float _getMin(float min, float radius1, float radius2, float limit) {
|
|
float sum = radius1 + radius2;
|
|
if (sum > limit && sum != 0.0) {
|
|
return Mathf.Min(min, limit / sum);
|
|
}
|
|
|
|
return min;
|
|
}
|
|
|
|
RRect _scaled;
|
|
|
|
void _scaleRadii() {
|
|
if (this._scaled == null) {
|
|
float scale = 1.0f;
|
|
|
|
scale = this._getMin(scale, this.blRadiusY, this.tlRadiusY, this.height);
|
|
scale = this._getMin(scale, this.tlRadiusX, this.trRadiusX, this.width);
|
|
scale = this._getMin(scale, this.trRadiusY, this.brRadiusY, this.height);
|
|
scale = this._getMin(scale, this.brRadiusX, this.blRadiusX, this.width);
|
|
|
|
if (scale < 1.0) {
|
|
this._scaled = fromLTRBAndCorners(
|
|
left: this.left, top: this.top, right: this.right, bottom: this.bottom,
|
|
topLeft: this.tlRadius * scale, topRight: this.trRadius * scale,
|
|
bottomRight: this.brRadius * scale, bottomLeft: this.blRadius * scale);
|
|
}
|
|
else {
|
|
this._scaled = this;
|
|
}
|
|
}
|
|
}
|
|
|
|
public bool contains(Offset point) {
|
|
if (point.dx < this.left || point.dx >= this.right || point.dy < this.top || point.dy >= this.bottom) {
|
|
return false;
|
|
}
|
|
|
|
this._scaleRadii();
|
|
|
|
float x;
|
|
float y;
|
|
float radiusX;
|
|
float radiusY;
|
|
|
|
if (point.dx < this.left + this._scaled.tlRadiusX &&
|
|
point.dy < this.top + this._scaled.tlRadiusY) {
|
|
x = point.dx - this.left - this._scaled.tlRadiusX;
|
|
y = point.dy - this.top - this._scaled.tlRadiusY;
|
|
radiusX = this._scaled.tlRadiusX;
|
|
radiusY = this._scaled.tlRadiusY;
|
|
}
|
|
else if (point.dx > this.right - this._scaled.trRadiusX &&
|
|
point.dy < this.top + this._scaled.trRadiusY) {
|
|
x = point.dx - this.right + this._scaled.trRadiusX;
|
|
y = point.dy - this.top - this._scaled.trRadiusY;
|
|
radiusX = this._scaled.trRadiusX;
|
|
radiusY = this._scaled.trRadiusY;
|
|
}
|
|
else if (point.dx > this.right - this._scaled.brRadiusX &&
|
|
point.dy > this.bottom - this._scaled.brRadiusY) {
|
|
x = point.dx - this.right + this._scaled.brRadiusX;
|
|
y = point.dy - this.bottom + this._scaled.brRadiusY;
|
|
radiusX = this._scaled.brRadiusX;
|
|
radiusY = this._scaled.brRadiusY;
|
|
}
|
|
else if (point.dx < this.left + this._scaled.blRadiusX &&
|
|
point.dy > this.bottom - this._scaled.blRadiusY) {
|
|
x = point.dx - this.left - this._scaled.blRadiusX;
|
|
y = point.dy - this.bottom + this._scaled.blRadiusY;
|
|
radiusX = this._scaled.blRadiusX;
|
|
radiusY = this._scaled.blRadiusY;
|
|
}
|
|
else {
|
|
return true;
|
|
}
|
|
|
|
x = x / radiusX;
|
|
y = y / radiusY;
|
|
if (x * x + y * y > 1.0) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
public static RRect lerp(RRect a, RRect b, float t) {
|
|
if (a == null && b == null) {
|
|
return null;
|
|
}
|
|
|
|
if (a == null) {
|
|
return fromLTRBAndCorners(
|
|
b.left * t,
|
|
b.top * t,
|
|
b.right * t,
|
|
b.bottom * t,
|
|
b.tlRadius * t,
|
|
b.trRadius * t,
|
|
b.brRadius * t,
|
|
b.blRadius * t
|
|
);
|
|
}
|
|
|
|
if (b == null) {
|
|
float k = 1.0f - t;
|
|
return fromLTRBAndCorners(
|
|
a.left * k,
|
|
a.top * k,
|
|
a.right * k,
|
|
a.bottom * k,
|
|
a.tlRadius * k,
|
|
a.trRadius * k,
|
|
a.brRadius * k,
|
|
a.blRadius * k);
|
|
}
|
|
|
|
return fromLTRBAndCorners(
|
|
MathUtils.lerpFloat(a.left, b.left, t),
|
|
MathUtils.lerpFloat(a.top, b.top, t),
|
|
MathUtils.lerpFloat(a.right, b.right, t),
|
|
MathUtils.lerpFloat(a.bottom, b.bottom, t),
|
|
Radius.lerp(a.tlRadius, b.tlRadius, t),
|
|
Radius.lerp(a.trRadius, b.trRadius, t),
|
|
Radius.lerp(a.brRadius, b.brRadius, t),
|
|
Radius.lerp(a.blRadius, b.blRadius, t));
|
|
}
|
|
|
|
public bool contains(Rect rect) {
|
|
if (!this.outerRect.contains(rect)) {
|
|
return false;
|
|
}
|
|
|
|
if (this.isRect) {
|
|
return true;
|
|
}
|
|
|
|
return this.contains(rect.topLeft) &&
|
|
this.contains(rect.topRight) &&
|
|
this.contains(rect.bottomRight) &&
|
|
this.contains(rect.bottomLeft);
|
|
}
|
|
|
|
public bool Equals(RRect other) {
|
|
if (ReferenceEquals(null, other)) {
|
|
return false;
|
|
}
|
|
|
|
if (ReferenceEquals(this, other)) {
|
|
return true;
|
|
}
|
|
|
|
return this.left.Equals(other.left)
|
|
&& this.top.Equals(other.top)
|
|
&& this.right.Equals(other.right)
|
|
&& this.bottom.Equals(other.bottom)
|
|
&& this.tlRadius.Equals(other.tlRadius)
|
|
&& this.trRadius.Equals(other.trRadius)
|
|
&& this.brRadius.Equals(other.brRadius)
|
|
&& this.blRadius.Equals(other.blRadius);
|
|
}
|
|
|
|
public override bool Equals(object obj) {
|
|
if (ReferenceEquals(null, obj)) {
|
|
return false;
|
|
}
|
|
|
|
if (ReferenceEquals(this, obj)) {
|
|
return true;
|
|
}
|
|
|
|
if (obj.GetType() != this.GetType()) {
|
|
return false;
|
|
}
|
|
|
|
return this.Equals((RRect) obj);
|
|
}
|
|
|
|
public override int GetHashCode() {
|
|
unchecked {
|
|
var hashCode = this.left.GetHashCode();
|
|
hashCode = (hashCode * 397) ^ this.top.GetHashCode();
|
|
hashCode = (hashCode * 397) ^ this.right.GetHashCode();
|
|
hashCode = (hashCode * 397) ^ this.bottom.GetHashCode();
|
|
hashCode = (hashCode * 397) ^ this.tlRadius.GetHashCode();
|
|
hashCode = (hashCode * 397) ^ this.trRadius.GetHashCode();
|
|
hashCode = (hashCode * 397) ^ this.brRadius.GetHashCode();
|
|
hashCode = (hashCode * 397) ^ this.blRadius.GetHashCode();
|
|
return hashCode;
|
|
}
|
|
}
|
|
|
|
public static bool operator ==(RRect a, RRect b) {
|
|
return Equals(a, b);
|
|
}
|
|
|
|
public static bool operator !=(RRect a, RRect b) {
|
|
return !(a == b);
|
|
}
|
|
|
|
public override string ToString() {
|
|
string rect = $"{this.left:F1)}, " +
|
|
$"{this.top:F1}, " +
|
|
$"{this.right:F1}, " +
|
|
$"{this.bottom:F1}";
|
|
|
|
if (this.tlRadius == this.trRadius &&
|
|
this.trRadius == this.brRadius &&
|
|
this.brRadius == this.blRadius) {
|
|
if (this.tlRadius.x == this.tlRadius.y) {
|
|
return $"RRect.fromLTRBR({rect}, {this.tlRadius.x:F1})";
|
|
}
|
|
|
|
return $"RRect.fromLTRBXY($rect, {this.tlRadius.x:F1}, {this.tlRadius.y:F1})";
|
|
}
|
|
|
|
return "RRect.fromLTRBAndCorners(" +
|
|
$"{rect}, " +
|
|
$"topLeft: {this.tlRadius}, " +
|
|
$"topRight: {this.trRadius}, " +
|
|
$"bottomRight: {this.brRadius}, " +
|
|
$"bottomLeft: {this.blRadius}" +
|
|
")";
|
|
}
|
|
}
|
|
}
|