去掉obi，使用自写绳索
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@@ -1,166 +0,0 @@
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using System;
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using UnityEngine;
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namespace Obi
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{
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[AddComponentMenu("Physics/Obi/Obi Distance Field Renderer", 1003)]
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[ExecuteInEditMode]
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[RequireComponent(typeof(ObiCollider))]
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public class ObiDistanceFieldRenderer : MonoBehaviour
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{
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public enum Axis
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{
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X = 0,
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Y = 1,
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Z = 2,
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}
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public Axis axis;
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[Range(0, 1)]
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public float slice = 0.25f;
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public float maxDistance = 0.5f;
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private ObiCollider unityCollider;
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private Material material;
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private Mesh planeMesh;
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private Texture2D cutawayTexture;
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private float sampleSize;
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private int sampleCount;
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private Color boundsColor = new Color(1, 1, 1, 0.5f);
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public void Awake()
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{
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unityCollider = GetComponent<ObiCollider>();
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}
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public void OnEnable()
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{
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material = GameObject.Instantiate(Resources.Load<Material>("ObiMaterials/DistanceFields/DistanceFieldRendering"));
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material.hideFlags = HideFlags.HideAndDontSave;
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}
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public void OnDisable()
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{
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Cleanup();
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}
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private void Cleanup()
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{
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GameObject.DestroyImmediate(cutawayTexture);
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GameObject.DestroyImmediate(planeMesh);
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GameObject.DestroyImmediate(material);
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}
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private void ResizeTexture()
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{
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if (cutawayTexture == null)
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{
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cutawayTexture = new Texture2D(sampleCount, sampleCount, TextureFormat.RHalf, false);
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cutawayTexture.wrapMode = TextureWrapMode.Clamp;
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cutawayTexture.hideFlags = HideFlags.HideAndDontSave;
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}
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else
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cutawayTexture.Reinitialize(sampleCount, sampleCount);
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}
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private void CreatePlaneMesh(ObiDistanceField field)
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{
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if (field != null && planeMesh == null)
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{
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float uvBorder = (1 - field.FieldBounds.size[0] / (sampleSize * sampleCount)) * 0.5f;
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planeMesh = new Mesh();
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planeMesh.vertices = new Vector3[]{new Vector3(-0.5f,-0.5f,0),
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new Vector3(0.5f,-0.5f,0),
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new Vector3(-0.5f,0.5f,0),
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new Vector3(0.5f,0.5f,0)};
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planeMesh.uv = new Vector2[]{new Vector2(uvBorder,uvBorder),
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new Vector2(1-uvBorder,uvBorder),
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new Vector2(uvBorder,1-uvBorder),
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new Vector2(1-uvBorder,1-uvBorder)};
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planeMesh.normals = new Vector3[] { -Vector3.forward, -Vector3.forward, -Vector3.forward, -Vector3.forward };
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planeMesh.triangles = new int[] { 0, 2, 1, 2, 3, 1 };
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}
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}
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private void RefreshCutawayTexture(ObiDistanceField field)
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{
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if (field == null)
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return;
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Bounds b = field.FieldBounds;
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sampleSize = field.EffectiveSampleSize;
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sampleCount = (int)(b.size[0] / sampleSize) + 1;
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CreatePlaneMesh(field);
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ResizeTexture();
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float sweep = (sampleCount * slice) * sampleSize;
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Vector3 origin = b.center - b.extents;
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for (int x = 0; x < sampleCount; ++x)
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for (int y = 0; y < sampleCount; ++y)
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{
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Vector3 offset = Vector3.zero;
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switch (axis)
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{
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case Axis.X: offset = new Vector3(sweep, y * sampleSize, x * sampleSize); break;
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case Axis.Y: offset = new Vector3(x * sampleSize, sweep, y * sampleSize); break;
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case Axis.Z: offset = new Vector3(x * sampleSize, y * sampleSize, sweep); break;
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}
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float distance = ASDF.Sample(field.nodes, origin + offset);
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float value = ObiUtils.Remap(distance, -maxDistance, maxDistance, 0, 1);
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cutawayTexture.SetPixel(x, y, new Color(value, 0, 0));
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}
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cutawayTexture.Apply();
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}
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private void DrawCutawayPlane(ObiDistanceField field, Matrix4x4 matrix)
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{
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if (field == null)
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return;
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RefreshCutawayTexture(field);
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material.mainTexture = cutawayTexture;
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material.SetPass(0);
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Quaternion rotation = Quaternion.identity;
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Vector3 offset = Vector3.zero;
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offset[(int)axis] = field.FieldBounds.size[0];
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if (axis == Axis.Y)
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rotation = Quaternion.Euler(90, 0, 0);
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else if (axis == Axis.X)
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rotation = Quaternion.Euler(0, -90, 0);
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Matrix4x4 sc = Matrix4x4.TRS(field.FieldBounds.center + offset * (slice - 0.5f), rotation, Vector3.one * field.FieldBounds.size[0]);
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Graphics.DrawMeshNow(planeMesh, matrix * sc);
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}
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public void OnDrawGizmos()
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{
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if (unityCollider != null && unityCollider.distanceField != null && unityCollider.distanceField.Initialized && material != null)
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{
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DrawCutawayPlane(unityCollider.distanceField, transform.localToWorldMatrix);
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Gizmos.color = boundsColor;
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Gizmos.DrawWireCube(unityCollider.distanceField.FieldBounds.center, unityCollider.distanceField.FieldBounds.size);
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}
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}
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}
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}
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