697 lines
24 KiB
C#
697 lines
24 KiB
C#
using System;
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using UnityEngine;
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namespace UnityEditor.U2D.Animation
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{
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internal class SpriteMeshController
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{
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private const float kSnapDistance = 10f;
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private struct EdgeIntersectionResult
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{
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public int startVertexIndex;
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public int endVertexIndex;
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public int intersectEdgeIndex;
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public Vector2 endPosition;
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}
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private SpriteMeshDataController m_SpriteMeshDataController = new SpriteMeshDataController();
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private EdgeIntersectionResult m_EdgeIntersectionResult;
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public ISpriteMeshView spriteMeshView { get; set; }
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public ISpriteMeshData spriteMeshData
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{
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get { return m_SpriteMeshData; }
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set { m_SpriteMeshData = value; }
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}
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public ISelection<int> selection { get; set; }
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public ICacheUndo cacheUndo { get; set; }
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public ITriangulator triangulator { get; set; }
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public bool disable { get; set; }
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public Rect frame { get; set; }
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private ISpriteMeshData m_SpriteMeshData;
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private bool m_Moved = false;
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public void OnGUI()
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{
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m_SpriteMeshDataController.spriteMeshData = m_SpriteMeshData;
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Debug.Assert(spriteMeshView != null);
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Debug.Assert(m_SpriteMeshData != null);
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Debug.Assert(selection != null);
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Debug.Assert(cacheUndo != null);
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spriteMeshView.selection = selection;
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spriteMeshView.frame = frame;
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EditorGUI.BeginDisabledGroup(disable);
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spriteMeshView.BeginLayout();
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if(spriteMeshView.CanLayout())
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{
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LayoutVertices();
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LayoutEdges();
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}
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spriteMeshView.EndLayout();
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if(spriteMeshView.CanRepaint())
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{
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DrawEdges();
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if(GUI.enabled)
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{
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PreviewCreateVertex();
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PreviewCreateEdge();
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PreviewSplitEdge();
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}
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DrawVertices();
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}
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HandleSplitEdge();
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HandleCreateEdge();
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HandleCreateVertex();
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EditorGUI.EndDisabledGroup();
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HandleSelectVertex();
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EditorGUI.BeginDisabledGroup(disable);
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HandleMoveVertex();
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EditorGUI.EndDisabledGroup();
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HandleSelectEdge();
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EditorGUI.BeginDisabledGroup(disable);
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HandleMoveEdge();
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HandleRemoveEdge();
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HandleRemoveVertices();
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spriteMeshView.DoRepaint();
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EditorGUI.EndDisabledGroup();
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}
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private void LayoutVertices()
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{
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for (int i = 0; i < m_SpriteMeshData.vertexCount; i++)
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{
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Vector2 position = m_SpriteMeshData.GetPosition(i);
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spriteMeshView.LayoutVertex(position, i);
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}
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}
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private void LayoutEdges()
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{
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for (int i = 0; i < m_SpriteMeshData.edges.Count; i++)
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{
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Edge edge = m_SpriteMeshData.edges[i];
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Vector2 startPosition = m_SpriteMeshData.GetPosition(edge.index1);
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Vector2 endPosition = m_SpriteMeshData.GetPosition(edge.index2);
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spriteMeshView.LayoutEdge(startPosition, endPosition, i);
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}
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}
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private void DrawEdges()
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{
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UpdateEdgeInstersection();
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spriteMeshView.BeginDrawEdges();
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for (int i = 0; i < m_SpriteMeshData.edges.Count; ++i)
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{
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if (SkipDrawEdge(i))
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continue;
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Edge edge = m_SpriteMeshData.edges[i];
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Vector2 startPosition = m_SpriteMeshData.GetPosition(edge.index1);
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Vector2 endPosition = m_SpriteMeshData.GetPosition(edge.index2);
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if (selection.Contains(edge.index1) && selection.Contains(edge.index2))
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spriteMeshView.DrawEdgeSelected(startPosition, endPosition);
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else
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spriteMeshView.DrawEdge(startPosition, endPosition);
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}
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if (spriteMeshView.IsActionActive(MeshEditorAction.SelectEdge))
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{
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Edge hoveredEdge = m_SpriteMeshData.edges[spriteMeshView.hoveredEdge];
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Vector2 startPosition = m_SpriteMeshData.GetPosition(hoveredEdge.index1);
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Vector2 endPosition = m_SpriteMeshData.GetPosition(hoveredEdge.index2);
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spriteMeshView.DrawEdgeHovered(startPosition, endPosition);
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}
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spriteMeshView.EndDrawEdges();
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}
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private bool SkipDrawEdge(int edgeIndex)
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{
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if(GUI.enabled == false)
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return false;
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return edgeIndex == -1 ||
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spriteMeshView.hoveredEdge == edgeIndex && spriteMeshView.IsActionActive(MeshEditorAction.SelectEdge) ||
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spriteMeshView.hoveredEdge == edgeIndex && spriteMeshView.IsActionActive(MeshEditorAction.CreateVertex) ||
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spriteMeshView.closestEdge == edgeIndex && spriteMeshView.IsActionActive(MeshEditorAction.SplitEdge) ||
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edgeIndex == m_EdgeIntersectionResult.intersectEdgeIndex && spriteMeshView.IsActionActive(MeshEditorAction.CreateEdge);
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}
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private void PreviewCreateVertex()
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{
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if (spriteMeshView.mode == SpriteMeshViewMode.CreateVertex &&
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spriteMeshView.IsActionActive(MeshEditorAction.CreateVertex))
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{
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Vector2 clampedMousePos = ClampToFrame(spriteMeshView.mouseWorldPosition);
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if (spriteMeshView.hoveredEdge != -1)
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{
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Edge edge = m_SpriteMeshData.edges[spriteMeshView.hoveredEdge];
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spriteMeshView.BeginDrawEdges();
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spriteMeshView.DrawEdge(m_SpriteMeshData.GetPosition(edge.index1), clampedMousePos);
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spriteMeshView.DrawEdge(m_SpriteMeshData.GetPosition(edge.index2), clampedMousePos);
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spriteMeshView.EndDrawEdges();
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}
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spriteMeshView.DrawVertex(clampedMousePos);
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}
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}
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private void PreviewCreateEdge()
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{
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if (!spriteMeshView.IsActionActive(MeshEditorAction.CreateEdge))
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return;
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spriteMeshView.BeginDrawEdges();
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spriteMeshView.DrawEdge(m_SpriteMeshData.GetPosition(m_EdgeIntersectionResult.startVertexIndex), m_EdgeIntersectionResult.endPosition);
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if (m_EdgeIntersectionResult.intersectEdgeIndex != -1)
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{
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Edge intersectingEdge = m_SpriteMeshData.edges[m_EdgeIntersectionResult.intersectEdgeIndex];
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spriteMeshView.DrawEdge(m_SpriteMeshData.GetPosition(intersectingEdge.index1), m_EdgeIntersectionResult.endPosition);
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spriteMeshView.DrawEdge(m_SpriteMeshData.GetPosition(intersectingEdge.index2), m_EdgeIntersectionResult.endPosition);
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}
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spriteMeshView.EndDrawEdges();
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if (m_EdgeIntersectionResult.endVertexIndex == -1)
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spriteMeshView.DrawVertex(m_EdgeIntersectionResult.endPosition);
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}
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private void PreviewSplitEdge()
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{
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if (!spriteMeshView.IsActionActive(MeshEditorAction.SplitEdge))
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return;
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Vector2 clampedMousePos = ClampToFrame(spriteMeshView.mouseWorldPosition);
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Edge closestEdge = m_SpriteMeshData.edges[spriteMeshView.closestEdge];
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spriteMeshView.BeginDrawEdges();
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spriteMeshView.DrawEdge(m_SpriteMeshData.GetPosition(closestEdge.index1), clampedMousePos);
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spriteMeshView.DrawEdge(m_SpriteMeshData.GetPosition(closestEdge.index2), clampedMousePos);
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spriteMeshView.EndDrawEdges();
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spriteMeshView.DrawVertex(clampedMousePos);
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}
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private void DrawVertices()
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{
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for (int i = 0; i < m_SpriteMeshData.vertexCount; i++)
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{
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Vector3 position = m_SpriteMeshData.GetPosition(i);
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if (selection.Contains(i))
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spriteMeshView.DrawVertexSelected(position);
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else if (i == spriteMeshView.hoveredVertex && spriteMeshView.IsActionHot(MeshEditorAction.None))
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spriteMeshView.DrawVertexHovered(position);
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else
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spriteMeshView.DrawVertex(position);
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}
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}
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private void HandleSelectVertex()
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{
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bool additive;
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if (spriteMeshView.DoSelectVertex(out additive))
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SelectVertex(spriteMeshView.hoveredVertex, additive);
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}
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private void HandleSelectEdge()
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{
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bool additive;
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if (spriteMeshView.DoSelectEdge(out additive))
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SelectEdge(spriteMeshView.hoveredEdge, additive);
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}
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private void HandleMoveVertex()
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{
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if(spriteMeshView.IsActionTriggered(MeshEditorAction.MoveVertex))
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m_Moved = false;
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Vector2 delta;
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if (spriteMeshView.DoMoveVertex(out delta))
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{
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if(!m_Moved)
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{
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cacheUndo.BeginUndoOperation(TextContent.moveVertices);
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m_Moved = true;
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}
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MoveSelectedVertices(delta);
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}
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}
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private void HandleCreateVertex()
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{
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if (spriteMeshView.DoCreateVertex())
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CreateVertex(spriteMeshView.mouseWorldPosition, spriteMeshView.hoveredEdge);
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}
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private void HandleSplitEdge()
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{
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if (spriteMeshView.DoSplitEdge())
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SplitEdge(spriteMeshView.mouseWorldPosition, spriteMeshView.closestEdge);
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}
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private void HandleCreateEdge()
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{
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if (spriteMeshView.DoCreateEdge())
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CreateEdge(spriteMeshView.mouseWorldPosition, spriteMeshView.hoveredVertex, spriteMeshView.hoveredEdge);
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}
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private void HandleMoveEdge()
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{
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if(spriteMeshView.IsActionTriggered(MeshEditorAction.MoveEdge))
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m_Moved = false;
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Vector2 delta;
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if (spriteMeshView.DoMoveEdge(out delta))
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{
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if(!m_Moved)
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{
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cacheUndo.BeginUndoOperation(TextContent.moveVertices);
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m_Moved = true;
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}
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MoveSelectedVertices(delta);
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}
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}
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private void HandleRemoveEdge()
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{
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Edge edge;
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if (GetSelectedEdge(out edge) && spriteMeshView.DoRemove())
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RemoveEdge(edge);
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}
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private void HandleRemoveVertices()
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{
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if (spriteMeshView.DoRemove())
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RemoveSelectedVertices();
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}
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private void CreateVertex(Vector2 position, int edgeIndex)
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{
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position = MathUtility.ClampPositionToRect(position, frame);
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cacheUndo.BeginUndoOperation(TextContent.createVertex);
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BoneWeight boneWeight = new BoneWeight();
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Vector3Int indices;
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Vector3 barycentricCoords;
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if (m_SpriteMeshDataController.FindTriangle(position, out indices, out barycentricCoords))
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{
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EditableBoneWeight bw1 = m_SpriteMeshData.GetWeight(indices.x);
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EditableBoneWeight bw2 = m_SpriteMeshData.GetWeight(indices.y);
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EditableBoneWeight bw3 = m_SpriteMeshData.GetWeight(indices.z);
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EditableBoneWeight result = new EditableBoneWeight();
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foreach (BoneWeightChannel channel in bw1)
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{
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if (!channel.enabled)
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continue;
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var weight = channel.weight * barycentricCoords.x;
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if (weight > 0f)
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result.AddChannel(channel.boneIndex, weight, true);
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}
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foreach (BoneWeightChannel channel in bw2)
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{
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if (!channel.enabled)
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continue;
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var weight = channel.weight * barycentricCoords.y;
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if (weight > 0f)
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result.AddChannel(channel.boneIndex, weight, true);
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}
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foreach (BoneWeightChannel channel in bw3)
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{
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if (!channel.enabled)
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continue;
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var weight = channel.weight * barycentricCoords.z;
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if (weight > 0f)
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result.AddChannel(channel.boneIndex, weight, true);
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}
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result.UnifyChannelsWithSameBoneIndex();
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result.FilterChannels(0f);
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result.Clamp(4, true);
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boneWeight = result.ToBoneWeight(true);
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}
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else if (edgeIndex != -1)
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{
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Edge edge = m_SpriteMeshData.edges[edgeIndex];
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Vector2 pos1 = m_SpriteMeshData.GetPosition(edge.index1);
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Vector2 pos2 = m_SpriteMeshData.GetPosition(edge.index2);
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Vector2 dir1 = (position - pos1);
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Vector2 dir2 = (pos2 - pos1);
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float t = Vector2.Dot(dir1, dir2.normalized) / dir2.magnitude;
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t = Mathf.Clamp01(t);
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BoneWeight bw1 = m_SpriteMeshData.GetWeight(edge.index1).ToBoneWeight(true);
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BoneWeight bw2 = m_SpriteMeshData.GetWeight(edge.index2).ToBoneWeight(true);
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boneWeight = EditableBoneWeightUtility.Lerp(bw1, bw2, t);
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}
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m_SpriteMeshDataController.CreateVertex(position, edgeIndex);
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m_SpriteMeshData.GetWeight(m_SpriteMeshData.vertexCount - 1).SetFromBoneWeight(boneWeight);
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Triangulate();
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}
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private void SelectVertex(int index, bool additiveToggle)
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{
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if (index < 0)
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throw new ArgumentException("Index out of range");
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bool selected = selection.Contains(index);
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if (selected)
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{
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if (additiveToggle)
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{
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cacheUndo.BeginUndoOperation(TextContent.selection);
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selection.Select(index, false);
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}
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}
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else
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{
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cacheUndo.BeginUndoOperation(TextContent.selection);
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if (!additiveToggle)
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ClearSelection();
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selection.Select(index, true);
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}
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cacheUndo.IncrementCurrentGroup();
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}
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private void SelectEdge(int index, bool additiveToggle)
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{
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Debug.Assert(index >= 0);
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Edge edge = m_SpriteMeshData.edges[index];
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cacheUndo.BeginUndoOperation(TextContent.selection);
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bool selected = selection.Contains(edge.index1) && selection.Contains(edge.index2);
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if (selected)
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{
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if (additiveToggle)
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{
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selection.Select(edge.index1, false);
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selection.Select(edge.index2, false);
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}
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}
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else
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{
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if (!additiveToggle)
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ClearSelection();
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selection.Select(edge.index1, true);
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selection.Select(edge.index2, true);
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}
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cacheUndo.IncrementCurrentGroup();
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}
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private void ClearSelection()
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{
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cacheUndo.BeginUndoOperation(TextContent.selection);
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selection.Clear();
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}
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private void MoveSelectedVertices(Vector2 delta)
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{
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delta = MathUtility.MoveRectInsideFrame(CalculateRectFromSelection(), frame, delta);
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var indices = selection.elements;
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foreach (int index in indices)
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{
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Vector2 v = m_SpriteMeshData.GetPosition(index);
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m_SpriteMeshData.SetPosition(index, ClampToFrame(v + delta));
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}
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Triangulate();
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}
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private void CreateEdge(Vector2 position, int hoveredVertexIndex, int hoveredEdgeIndex)
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{
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position = ClampToFrame(position);
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EdgeIntersectionResult edgeIntersectionResult = CalculateEdgeIntersection(selection.activeElement, hoveredVertexIndex, hoveredEdgeIndex, position);
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cacheUndo.BeginUndoOperation(TextContent.createEdge);
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int selectIndex = -1;
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if (edgeIntersectionResult.endVertexIndex == -1)
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{
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CreateVertex(edgeIntersectionResult.endPosition, edgeIntersectionResult.intersectEdgeIndex);
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m_SpriteMeshDataController.CreateEdge(selection.activeElement, m_SpriteMeshData.vertexCount - 1);
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selectIndex = m_SpriteMeshData.vertexCount - 1;
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}
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else
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{
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m_SpriteMeshDataController.CreateEdge(selection.activeElement, edgeIntersectionResult.endVertexIndex);
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Triangulate();
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selectIndex = edgeIntersectionResult.endVertexIndex;
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}
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ClearSelection();
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selection.Select(selectIndex, true);
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cacheUndo.IncrementCurrentGroup();
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}
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private void SplitEdge(Vector2 position, int edgeIndex)
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{
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cacheUndo.BeginUndoOperation(TextContent.splitEdge);
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Vector2 clampedMousePos = ClampToFrame(position);
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CreateVertex(clampedMousePos, edgeIndex);
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cacheUndo.IncrementCurrentGroup();
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}
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private bool GetSelectedEdge(out Edge edge)
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{
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edge = default(Edge);
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if (selection.Count != 2)
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return false;
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var indices = selection.elements;
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int index1 = indices[0];
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int index2 = indices[1];
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edge = new Edge(index1, index2);
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if (!m_SpriteMeshData.edges.Contains(edge))
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return false;
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return true;
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}
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private void RemoveEdge(Edge edge)
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{
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cacheUndo.BeginUndoOperation(TextContent.removeEdge);
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m_SpriteMeshDataController.RemoveEdge(edge);
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Triangulate();
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}
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private void RemoveSelectedVertices()
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{
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cacheUndo.BeginUndoOperation(TextContent.removeVertices);
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m_SpriteMeshDataController.RemoveVertex(selection.elements);
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Triangulate();
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selection.Clear();
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}
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private void Triangulate()
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{
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m_SpriteMeshDataController.Triangulate(triangulator);
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m_SpriteMeshDataController.SortTrianglesByDepth();
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}
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private Vector2 ClampToFrame(Vector2 position)
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{
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return MathUtility.ClampPositionToRect(position, frame);
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}
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private Rect CalculateRectFromSelection()
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{
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Rect rect = new Rect();
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Vector2 min = new Vector2(float.MaxValue, float.MaxValue);
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Vector2 max = new Vector2(float.MinValue, float.MinValue);
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|
|
|
var indices = selection.elements;
|
|
|
|
foreach (int index in indices)
|
|
{
|
|
Vector2 v = m_SpriteMeshData.GetPosition(index);
|
|
|
|
min.x = Mathf.Min(min.x, v.x);
|
|
min.y = Mathf.Min(min.y, v.y);
|
|
|
|
max.x = Mathf.Max(max.x, v.x);
|
|
max.y = Mathf.Max(max.y, v.y);
|
|
}
|
|
|
|
rect.min = min;
|
|
rect.max = max;
|
|
|
|
return rect;
|
|
}
|
|
|
|
private void UpdateEdgeInstersection()
|
|
{
|
|
if (selection.Count == 1)
|
|
m_EdgeIntersectionResult = CalculateEdgeIntersection(selection.activeElement, spriteMeshView.hoveredVertex, spriteMeshView.hoveredEdge, ClampToFrame(spriteMeshView.mouseWorldPosition));
|
|
}
|
|
|
|
private EdgeIntersectionResult CalculateEdgeIntersection(int vertexIndex, int hoveredVertexIndex, int hoveredEdgeIndex, Vector2 targetPosition)
|
|
{
|
|
Debug.Assert(vertexIndex >= 0);
|
|
|
|
EdgeIntersectionResult edgeIntersection = new EdgeIntersectionResult();
|
|
|
|
edgeIntersection.startVertexIndex = vertexIndex;
|
|
edgeIntersection.endVertexIndex = hoveredVertexIndex;
|
|
edgeIntersection.endPosition = targetPosition;
|
|
edgeIntersection.intersectEdgeIndex = -1;
|
|
|
|
Vector2 startPoint = m_SpriteMeshData.GetPosition(edgeIntersection.startVertexIndex);
|
|
|
|
bool intersectsEdge = false;
|
|
int lastIntersectingEdgeIndex = -1;
|
|
|
|
do
|
|
{
|
|
lastIntersectingEdgeIndex = edgeIntersection.intersectEdgeIndex;
|
|
|
|
if (intersectsEdge)
|
|
{
|
|
Vector2 dir = edgeIntersection.endPosition - startPoint;
|
|
edgeIntersection.endPosition += dir.normalized * 10f;
|
|
}
|
|
|
|
intersectsEdge = SegmentIntersectsEdge(startPoint, edgeIntersection.endPosition, vertexIndex, ref edgeIntersection.endPosition, out edgeIntersection.intersectEdgeIndex);
|
|
|
|
//if we are hovering a vertex and intersect an edge indexing it we forget about the intersection
|
|
if (intersectsEdge && m_SpriteMeshData.edges[edgeIntersection.intersectEdgeIndex].Contains(edgeIntersection.endVertexIndex))
|
|
{
|
|
edgeIntersection.intersectEdgeIndex = -1;
|
|
intersectsEdge = false;
|
|
edgeIntersection.endPosition = m_SpriteMeshData.GetPosition(edgeIntersection.endVertexIndex);
|
|
}
|
|
|
|
if (intersectsEdge)
|
|
{
|
|
edgeIntersection.endVertexIndex = -1;
|
|
|
|
Edge intersectingEdge = m_SpriteMeshData.edges[edgeIntersection.intersectEdgeIndex];
|
|
Vector2 newPointScreen = spriteMeshView.WorldToScreen(edgeIntersection.endPosition);
|
|
Vector2 edgeV1 = spriteMeshView.WorldToScreen(m_SpriteMeshData.GetPosition(intersectingEdge.index1));
|
|
Vector2 edgeV2 = spriteMeshView.WorldToScreen(m_SpriteMeshData.GetPosition(intersectingEdge.index2));
|
|
|
|
if ((newPointScreen - edgeV1).magnitude <= kSnapDistance)
|
|
edgeIntersection.endVertexIndex = intersectingEdge.index1;
|
|
else if ((newPointScreen - edgeV2).magnitude <= kSnapDistance)
|
|
edgeIntersection.endVertexIndex = intersectingEdge.index2;
|
|
|
|
if (edgeIntersection.endVertexIndex != -1)
|
|
{
|
|
edgeIntersection.intersectEdgeIndex = -1;
|
|
intersectsEdge = false;
|
|
edgeIntersection.endPosition = m_SpriteMeshData.GetPosition(edgeIntersection.endVertexIndex);
|
|
}
|
|
}
|
|
}
|
|
while (intersectsEdge && lastIntersectingEdgeIndex != edgeIntersection.intersectEdgeIndex);
|
|
|
|
edgeIntersection.intersectEdgeIndex = intersectsEdge ? edgeIntersection.intersectEdgeIndex : hoveredEdgeIndex;
|
|
|
|
if (edgeIntersection.endVertexIndex != -1 && !intersectsEdge)
|
|
edgeIntersection.endPosition = m_SpriteMeshData.GetPosition(edgeIntersection.endVertexIndex);
|
|
|
|
return edgeIntersection;
|
|
}
|
|
|
|
private bool SegmentIntersectsEdge(Vector2 p1, Vector2 p2, int ignoreIndex, ref Vector2 point, out int intersectingEdgeIndex)
|
|
{
|
|
intersectingEdgeIndex = -1;
|
|
|
|
float sqrDistance = float.MaxValue;
|
|
|
|
for (int i = 0; i < m_SpriteMeshData.edges.Count; i++)
|
|
{
|
|
Edge edge = m_SpriteMeshData.edges[i];
|
|
Vector2 v1 = m_SpriteMeshData.GetPosition(edge.index1);
|
|
Vector2 v2 = m_SpriteMeshData.GetPosition(edge.index2);
|
|
Vector2 pointTmp = Vector2.zero;
|
|
|
|
if (!edge.Contains(ignoreIndex) && MathUtility.SegmentIntersection(p1, p2, v1, v2, ref pointTmp))
|
|
{
|
|
float sqrMagnitude = (pointTmp - p1).sqrMagnitude;
|
|
if (sqrMagnitude < sqrDistance)
|
|
{
|
|
sqrDistance = sqrMagnitude;
|
|
intersectingEdgeIndex = i;
|
|
point = pointTmp;
|
|
}
|
|
}
|
|
}
|
|
|
|
return intersectingEdgeIndex != -1;
|
|
}
|
|
}
|
|
}
|