在此项目中,您能够访问使用 Visual Effect Graph 制作的示例场景和效果。
您最多选择25个主题 主题必须以中文或者字母或数字开头,可以包含连字符 (-),并且长度不得超过35个字符

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7.0 KiB

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.VFX;
using UnityEngine.VFX.Utility;
using UnityEngine.EventSystems;
public class VoxelizedTerrainController : MonoBehaviour
{
[Header("Camera")]
public Camera ViewingCamera;
public GameObject CameraRoot;
public Vector2 CameraMinMaxDistance = new Vector2(1.0f,2.0f);
public Vector2 CameraMinMaxHeight = new Vector2(0.0f, 1.0f);
public float CameraMinDistanceToUpVector = 1.0f;
public float PanSpeed = 0.01f;
public float OrbitSpeed = 0.01f;
public float ScaleSpeed = 0.01f;
[Header("UI")]
public GameObject UIPanelRoot;
public Slider WaterElevationSlider;
public Slider ElevationSlider;
public Slider InputHeightMapScaleSlider;
[Header("Visual Effect Configuration")]
public VisualEffect VisualEffect;
public Vector2 BasePosition = Vector2.zero;
public Vector2 BaseWorldScale = Vector2.one;
public Vector2 MinMaxWorldScale = new Vector2(0.1f, 5.0f);
public Vector2 InputHeightLevel = new Vector2(0.1f, 5.0f);
public Vector2 WaterElevationRange = new Vector2(0.1f, 1.0f);
public Vector2 ElevationRange = new Vector2(0.2f, 1.0f);
public ExposedProperty Position = "Position";
public ExposedProperty WorldSize = "WorldSize";
public ExposedProperty InputHeightMapScale = "Input HeightMap Scale";
public ExposedProperty WaterElevation = "Water Elevation";
public ExposedProperty Elevation = "Elevation";
private Vector2 m_Position;
private Vector2 m_WorldSize;
private Vector2 mousePos;
private int clicked;
private void OnEnable()
{
if (SampleLoader.instance != null)
{
SampleLoader.instance.onMenuToggle += OnSamplesMenuToggle;
}
}
private void OnDisable()
{
if (SampleLoader.instance != null)
{
SampleLoader.instance.onMenuToggle -= OnSamplesMenuToggle;
}
}
bool menuVisible = false;
void OnSamplesMenuToggle(bool visible)
{
menuVisible = visible;
UIPanelRoot.SetActive(!visible);
}
private void Start()
{
m_Position = BasePosition;
m_WorldSize = BaseWorldScale;
mousePos = Input.mousePosition;
clicked = -1;
}
private void Update()
{
if (menuVisible)
return;
// Mouse Management
Vector2 delta = (Vector2)Input.mousePosition - mousePos;
mousePos = Input.mousePosition;
Vector3 worldScaleVector = delta.x * ViewingCamera.transform.right + delta.y * ViewingCamera.transform.forward;
if (CheckParameters())
{
if(clicked == -1)
{
if (Input.GetMouseButton(0) && !EventSystem.current.IsPointerOverGameObject())
clicked = 0;
else if (Input.GetMouseButton(1) && !EventSystem.current.IsPointerOverGameObject())
clicked = 1;
}
else // Manage Click
{
if (!Input.GetMouseButton(0) && !Input.GetMouseButton(1))
clicked = -1;
else
{
if (clicked == 0) // Pan/Scale
{
var planeVector = new Vector2(worldScaleVector.x, worldScaleVector.z);
if(Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift))
{
float oldSize = m_WorldSize.x;
float newSize = Mathf.Clamp(ScaleSpeed * delta.y + oldSize, MinMaxWorldScale.x, MinMaxWorldScale.y);
m_WorldSize = new Vector2(newSize, newSize);
}
else
{
m_Position += planeVector * (PanSpeed / m_WorldSize.x);
}
}
else if (clicked == 1) // Orbit
{
float distance = (ViewingCamera.transform.position - CameraRoot.transform.position).magnitude;
ViewingCamera.transform.position -= OrbitSpeed * delta.x * ViewingCamera.transform.right + OrbitSpeed * delta.y * ViewingCamera.transform.up;
Vector3 direction = (ViewingCamera.transform.position - CameraRoot.transform.position).normalized;
ViewingCamera.transform.position = CameraRoot.transform.position + distance * direction;
float height = Mathf.Clamp(ViewingCamera.transform.position.y, CameraMinMaxHeight.x, CameraMinMaxHeight.y);
Vector2 upAxisOffset = new Vector2(ViewingCamera.transform.position.x, ViewingCamera.transform.position.z);
upAxisOffset = upAxisOffset.normalized * Mathf.Max(upAxisOffset.magnitude, CameraMinDistanceToUpVector);
ViewingCamera.transform.position = new Vector3(upAxisOffset.x, height, upAxisOffset.y);
}
}
}
float dist = (ViewingCamera.transform.position - CameraRoot.transform.position).magnitude;
Vector3 dir = (ViewingCamera.transform.position - CameraRoot.transform.position).normalized;
if (Input.mouseScrollDelta.y != 0)
{
dist += Input.mouseScrollDelta.y * 0.1f;
}
dist = Mathf.Clamp(dist, CameraMinMaxDistance.x, CameraMinMaxDistance.y);
ViewingCamera.transform.position = CameraRoot.transform.position + dist * dir;
VisualEffect.SetVector2(Position, m_Position);
VisualEffect.SetVector2(WorldSize, m_WorldSize);
// Sliders
float inputHeightMapScale = Mathf.Lerp(InputHeightLevel.x, InputHeightLevel.y, InputHeightMapScaleSlider.value);
float elevation = Mathf.Lerp(ElevationRange.x, ElevationRange.y, ElevationSlider.value);
float waterElevation = Mathf.Lerp(WaterElevationRange.x, WaterElevationRange.y, WaterElevationSlider.value);
CameraRoot.transform.position = new Vector3(CameraRoot.transform.position.x, waterElevation, CameraRoot.transform.position.z);
ViewingCamera.transform.LookAt(CameraRoot.transform);
VisualEffect.SetFloat(InputHeightMapScale, inputHeightMapScale);
VisualEffect.SetFloat(Elevation, elevation);
VisualEffect.SetFloat(WaterElevation, waterElevation);
}
}
private bool CheckParameters()
{
return CameraRoot != null &&
ViewingCamera != null &&
ElevationSlider != null &&
InputHeightMapScaleSlider != null &&
WaterElevationSlider != null &&
VisualEffect != null &&
VisualEffect.HasVector2(Position) &&
VisualEffect.HasVector2(WorldSize) &&
VisualEffect.HasFloat(InputHeightMapScale) &&
VisualEffect.HasFloat(WaterElevation) &&
VisualEffect.HasFloat(Elevation);
}
}