internal override uint[] Search(RenderEventArgs arg, int x, int y, uint lastVertexId, ZeroIndexRenderer modernRenderer) { OneIndexBufferPtr indexBufferPtr = null; using (var buffer = new OneIndexBuffer <uint>(DrawMode.Lines, BufferUsage.StaticDraw)) { buffer.Create(8); unsafe { var array = (uint *)buffer.Header.ToPointer(); array[0] = lastVertexId - 1; array[1] = lastVertexId - 0; array[2] = lastVertexId - 2; array[3] = lastVertexId - 1; array[4] = lastVertexId - 3; array[5] = lastVertexId - 2; array[6] = lastVertexId - 0; array[7] = lastVertexId - 3; } indexBufferPtr = buffer.GetBufferPtr() as OneIndexBufferPtr; } modernRenderer.Render4InnerPicking(arg, indexBufferPtr); uint id = ColorCodedPicking.ReadPixel(x, y, arg.CanvasRect.Height); indexBufferPtr.Dispose(); if (id + 3 == lastVertexId) { return(new uint[] { id + 3, id, }); } else { return(new uint[] { id - 1, id, }); } }
internal override uint Search(RenderEventArgs arg, int x, int y, uint lastVertexId, ZeroIndexRenderer modernRenderer) { OneIndexBufferPtr indexBufferPtr = null; using (var buffer = new OneIndexBuffer <uint>(DrawMode.Points, BufferUsage.StaticDraw)) { buffer.Create(3); unsafe { var array = (uint *)buffer.Header.ToPointer(); array[0] = lastVertexId - 0; array[1] = lastVertexId - 1; array[2] = lastVertexId - 2; } indexBufferPtr = buffer.GetBufferPtr() as OneIndexBufferPtr; } modernRenderer.Render4InnerPicking(arg, indexBufferPtr); uint id = ColorCodedPicking.ReadPixel(x, y, arg.CanvasRect.Height); indexBufferPtr.Dispose(); if (lastVertexId - 2 <= id && id <= lastVertexId - 0) { return(id); } else { throw new Exception("This should not happen!"); } }
internal override uint[] Search(RenderEventArgs arg, int x, int y, RecognizedPrimitiveIndex lastIndexId, OneIndexRenderer modernRenderer) { List <uint> indexList = lastIndexId.IndexIdList; if (indexList.Count < 3) { throw new ArgumentException(); } OneIndexBufferPtr indexBufferPtr = null; using (var buffer = new OneIndexBuffer <uint>(DrawMode.LineLoop, BufferUsage.StaticDraw)) { buffer.Create(indexList.Count); unsafe { var array = (uint *)buffer.Header.ToPointer(); for (int i = 0; i < indexList.Count; i++) { array[i] = indexList[i]; } } indexBufferPtr = buffer.GetBufferPtr() as OneIndexBufferPtr; } modernRenderer.Render4InnerPicking(arg, indexBufferPtr); uint id = ColorCodedPicking.ReadPixel(x, y, arg.CanvasRect.Height); indexBufferPtr.Dispose(); if (id == indexList[0]) { return(new uint[] { indexList[indexList.Count - 1], id, }); } else { uint[] result = null; for (int i = 1; i < indexList.Count; i++) { if (id == indexList[i]) { result = new uint[] { indexList[i - 1], indexList[i], }; break; } } if (result != null) { return(result); } else { throw new Exception("This should not happen!"); } } }
internal override uint[] Search(RenderEventArgs arg, int x, int y, RecognizedPrimitiveIndex lastIndexId, OneIndexRenderer modernRenderer) { List <uint> indexList = lastIndexId.IndexIdList; if (indexList.Count != 4) { throw new ArgumentException(); } OneIndexBufferPtr indexBufferPtr = null; using (var buffer = new OneIndexBuffer <uint>(DrawMode.Lines, BufferUsage.StaticDraw)) { buffer.Create(8); unsafe { var array = (uint *)buffer.Header.ToPointer(); array[0] = indexList[0]; array[1] = indexList[1]; array[2] = indexList[1]; array[3] = indexList[2]; array[4] = indexList[2]; array[5] = indexList[3]; array[6] = indexList[3]; array[7] = indexList[0]; } indexBufferPtr = buffer.GetBufferPtr() as OneIndexBufferPtr; } modernRenderer.Render4InnerPicking(arg, indexBufferPtr); uint id = ColorCodedPicking.ReadPixel(x, y, arg.CanvasRect.Height); indexBufferPtr.Dispose(); if (id == indexList[1]) { return(new uint[] { indexList[0], indexList[1], }); } else if (id == indexList[2]) { return(new uint[] { indexList[1], indexList[2], }); } else if (id == indexList[3]) { return(new uint[] { indexList[2], indexList[3], }); } else if (id == indexList[0]) { return(new uint[] { indexList[2], indexList[0], }); } else { throw new Exception("This should not happen!"); } }
internal override uint[] Search(RenderEventArgs arg, int x, int y, RecognizedPrimitiveInfo primitiveInfo, OneIndexRenderer modernRenderer) { uint[] indexList = primitiveInfo.VertexIds; if (indexList.Length != 3) { throw new ArgumentException(); } //if (indexList[0] == indexList[1]) { return new uint[] { indexList[0], indexList[2], }; } //else if (indexList[0] == indexList[2]) { return new uint[] { indexList[0], indexList[1], }; } //else if (indexList[1] == indexList[2]) { return new uint[] { indexList[1], indexList[0], }; } OneIndexBufferPtr indexBufferPtr = null; using (var buffer = new OneIndexBuffer(IndexElementType.UInt, DrawMode.Lines, BufferUsage.StaticDraw)) { buffer.Create(6); unsafe { var array = (uint *)buffer.Header.ToPointer(); array[0] = indexList[0]; array[1] = indexList[1]; array[2] = indexList[1]; array[3] = indexList[2]; array[4] = indexList[2]; array[5] = indexList[0]; } indexBufferPtr = buffer.GetBufferPtr() as OneIndexBufferPtr; } modernRenderer.Render4InnerPicking(arg, indexBufferPtr); uint id = ColorCodedPicking.ReadPixel(x, arg.CanvasRect.Height - y - 1); indexBufferPtr.Dispose(); if (id == indexList[1]) { return(new uint[] { indexList[0], indexList[1], }); } else if (id == indexList[2]) { return(new uint[] { indexList[1], indexList[2], }); } else if (id == indexList[0]) { return(new uint[] { indexList[2], indexList[0], }); } else { throw new Exception("This should not happen!"); } }
internal override uint[] Search(RenderEventArgs arg, int x, int y, uint lastVertexId, ZeroIndexRenderer modernRenderer) { OneIndexBufferPtr indexBufferPtr = null; using (var buffer = new OneIndexBuffer(IndexElementType.UInt, DrawMode.Lines, BufferUsage.StaticDraw)) { buffer.Create(8); unsafe { var array = (uint *)buffer.Header.ToPointer(); array[0] = lastVertexId - 0; array[1] = lastVertexId - 2; array[2] = lastVertexId - 2; array[3] = lastVertexId - 3; array[4] = lastVertexId - 3; array[5] = lastVertexId - 1; array[6] = lastVertexId - 1; array[7] = lastVertexId - 0; } indexBufferPtr = buffer.GetBufferPtr() as OneIndexBufferPtr; } modernRenderer.Render4InnerPicking(arg, indexBufferPtr); uint id = ColorCodedPicking.ReadPixel(x, arg.CanvasRect.Height - y - 1); indexBufferPtr.Dispose(); if (id + 2 == lastVertexId) { return(new uint[] { lastVertexId - 0, lastVertexId - 2, }); } else if (id + 3 == lastVertexId) { return(new uint[] { lastVertexId - 2, lastVertexId - 3 }); } else if (id + 1 == lastVertexId) { return(new uint[] { lastVertexId - 3, lastVertexId - 1, }); } else if (id + 0 == lastVertexId) { return(new uint[] { lastVertexId - 1, lastVertexId - 0, }); } else { throw new Exception("This should not happen!"); } }
internal override uint Search(RenderEventArgs arg, int x, int y, RecognizedPrimitiveIndex lastIndexId, OneIndexRenderer modernRenderer) { List <uint> indexList = lastIndexId.IndexIdList; if (indexList.Count < 3) { throw new ArgumentException(); } OneIndexBufferPtr indexBufferPtr = null; using (var buffer = new OneIndexBuffer <uint>(DrawMode.Points, BufferUsage.StaticDraw)) { buffer.Alloc(indexList.Count); unsafe { var array = (uint *)buffer.Header.ToPointer(); for (int i = 0; i < indexList.Count; i++) { array[i] = indexList[i]; } } indexBufferPtr = buffer.GetBufferPtr() as OneIndexBufferPtr; } modernRenderer.Render4InnerPicking(arg, indexBufferPtr); uint id = ColorCodedPicking.ReadPixel(x, y, arg.CanvasRect.Height); indexBufferPtr.Dispose(); if (id != uint.MaxValue) { return(id); } else { throw new Exception("This should not happen!"); } }
internal override uint Search(RenderEventArgs arg, int x, int y, RecognizedPrimitiveInfo primitiveInfo, OneIndexRenderer modernRenderer) { uint[] indexList = primitiveInfo.VertexIds; if (indexList.Length < 3) { throw new ArgumentException(); } OneIndexBufferPtr indexBufferPtr = null; using (var buffer = new OneIndexBuffer(IndexElementType.UInt, DrawMode.Points, BufferUsage.StaticDraw)) { buffer.Create(indexList.Length); unsafe { var array = (uint *)buffer.Header.ToPointer(); for (int i = 0; i < indexList.Length; i++) { array[i] = indexList[i]; } } indexBufferPtr = buffer.GetBufferPtr() as OneIndexBufferPtr; } modernRenderer.Render4InnerPicking(arg, indexBufferPtr); uint id = ColorCodedPicking.ReadPixel(x, arg.CanvasRect.Height - y - 1); indexBufferPtr.Dispose(); if (id != uint.MaxValue) { return(id); } else { throw new Exception("This should not happen!"); } }
/// <summary> /// 在三角形图元中拾取指定位置的Line /// </summary> /// <param name="arg">渲染参数</param> /// <param name="x">指定位置</param> /// <param name="y">指定位置</param> /// <param name="lastVertexId">三角形图元的最后一个顶点</param> /// <param name="modernRenderer">目标Renderer</param> /// <returns></returns> internal override uint[] Search(RenderEventArgs arg, int x, int y, uint lastVertexId, ZeroIndexRenderer modernRenderer) { // 创建临时索引 OneIndexBufferPtr indexBufferPtr = null; using (var buffer = new OneIndexBuffer <uint>(DrawMode.Lines, BufferUsage.StaticDraw)) { buffer.Create(6); unsafe { var array = (uint *)buffer.Header.ToPointer(); array[0] = lastVertexId - 1; array[1] = lastVertexId - 0; array[2] = lastVertexId - 2; array[3] = lastVertexId - 1; array[4] = lastVertexId - 0; array[5] = lastVertexId - 2; } indexBufferPtr = buffer.GetBufferPtr() as OneIndexBufferPtr; } // 用临时索引渲染此三角形图元(仅渲染此三角形图元) modernRenderer.Render4InnerPicking(arg, indexBufferPtr); // id是拾取到的Line的Last Vertex Id uint id = ColorCodedPicking.ReadPixel(x, y, arg.CanvasRect.Height); indexBufferPtr.Dispose(); // 对比临时索引,找到那个Line if (id + 2 == lastVertexId) { return(new uint[] { id + 2, id, }); } else { return(new uint[] { id - 1, id, }); } }
/// <summary> /// 在三角形图元中拾取指定位置的Point /// </summary> /// <param name="arg">渲染参数</param> /// <param name="x">指定位置</param> /// <param name="y">指定位置</param> /// <param name="lastVertexId">三角形图元的最后一个顶点</param> /// <param name="modernRenderer">目标Renderer</param> /// <returns></returns> internal override uint Search(RenderEventArgs arg, int x, int y, uint lastVertexId, ZeroIndexRenderer modernRenderer) { // 创建临时索引 OneIndexBufferPtr indexBufferPtr = null; using (var buffer = new OneIndexBuffer(IndexElementType.UInt, DrawMode.Points, BufferUsage.StaticDraw)) { buffer.Create(3); unsafe { var array = (uint *)buffer.Header.ToPointer(); array[0] = lastVertexId - 0; array[1] = lastVertexId - 1; array[2] = lastVertexId - 2; } indexBufferPtr = buffer.GetBufferPtr() as OneIndexBufferPtr; } // 用临时索引渲染此三角形图元(仅渲染此三角形图元) modernRenderer.Render4InnerPicking(arg, indexBufferPtr); // id是拾取到的Line的Last Vertex Id uint id = ColorCodedPicking.ReadPixel(x, arg.CanvasRect.Height - y - 1); indexBufferPtr.Dispose(); // 对比临时索引,找到那个Line if (lastVertexId - 2 <= id && id <= lastVertexId - 0) { return(id); } else { throw new Exception("This should not happen!"); } }