private PickedGeometry PickWhateverItIs(uint stageVertexId, uint lastVertexId, DrawMode mode, GeometryType typeOfMode)
{
PickedGeometry pickedGeometry = new PickedGeometry();
pickedGeometry.GeometryType = typeOfMode;
pickedGeometry.StageVertexId = stageVertexId;
pickedGeometry.From = this;
// Fill primitive's position information.
int vertexCount = typeOfMode.GetVertexCount();
if (vertexCount == -1)
{
vertexCount = this.PositionBufferPtr.Length;
}
if (lastVertexId == 0 && vertexCount == 2)
{
// This is when mode is GL_LINE_LOOP and picked last line(the loop back one)
PickingLastLineInLineLoop(pickedGeometry);
return(pickedGeometry);
}
// Other conditions
switch (typeOfMode)
{
case GeometryType.Point:
pickedGeometry.VertexIds = new uint[] { lastVertexId, };
pickedGeometry.Positions = FillPickedGeometrysPosition(lastVertexId, 1);
break;
case GeometryType.Line:
pickedGeometry.VertexIds = new uint[] { lastVertexId - 1, lastVertexId, };
pickedGeometry.Positions = FillPickedGeometrysPosition(lastVertexId - 1, 2);
break;
case GeometryType.Triangle:
if (mode == DrawMode.TriangleFan)
{
pickedGeometry.VertexIds = new uint[] { 0, lastVertexId - 1, lastVertexId, };
pickedGeometry.Positions = FillPickedGeometrysPosition(pickedGeometry.VertexIds);
}
else if (mode == DrawMode.TrianglesAdjacency || mode == DrawMode.TriangleStripAdjacency)
{
pickedGeometry.VertexIds = new uint[] { lastVertexId - 4, lastVertexId - 2, lastVertexId, };
pickedGeometry.Positions = FillPickedGeometrysPosition(pickedGeometry.VertexIds);
}
else
{
pickedGeometry.VertexIds = new uint[] { lastVertexId - 2, lastVertexId - 1, lastVertexId, };
pickedGeometry.Positions = FillPickedGeometrysPosition(lastVertexId - 2, 3);
}
break;
case GeometryType.Quad:
pickedGeometry.VertexIds = new uint[] { lastVertexId - 3, lastVertexId - 2, lastVertexId - 1, lastVertexId, };
pickedGeometry.Positions = FillPickedGeometrysPosition(lastVertexId - 3, 4);
break;
case GeometryType.Polygon:
pickedGeometry.VertexIds = new uint[vertexCount];
for (uint i = 0; i < vertexCount; i++)
{
pickedGeometry.VertexIds[i] = lastVertexId + i;
}
pickedGeometry.Positions = FillPickedGeometrysPosition(0, vertexCount);
break;
default:
throw new NotImplementedException();
}
return(pickedGeometry);
}
private PickedGeometry PickWhateverItIs(PickingEventArgs arg, uint stageVertexId, uint singleNodeVertexId, DrawMode mode, GeometryType typeOfMode)
{
//PickedGeometry pickedGeometry = new PickedGeometry();
//pickedGeometry.GeometryType = typeOfMode;
//pickedGeometry.StageVertexId = stageVertexId;
//pickedGeometry.FromRenderer = this;
// Fill primitive's position information.
int vertexCount = typeOfMode.GetVertexCount();
if (vertexCount == -1)
{
vertexCount = (from item in this.Node.PickingRenderMethod.PositionBuffers select item.Length).Sum();
}
uint[] vertexIds; vec3[] positions;
if (singleNodeVertexId == 0 && vertexCount == 2)
{
// This is when mode is GL_LINE_LOOP and picked last line(the loop back one)
PickingLastLineInLineLoop(out vertexIds, out positions);
}
else
{
// Other conditions
switch (typeOfMode)
{
case GeometryType.Point:
vertexIds = new uint[] { singleNodeVertexId, };
positions = FillPickedGeometrysPosition(singleNodeVertexId, 1);
break;
case GeometryType.Line:
vertexIds = new uint[] { singleNodeVertexId - 1, singleNodeVertexId, };
positions = FillPickedGeometrysPosition(singleNodeVertexId - 1, 2);
break;
case GeometryType.Triangle:
if (mode == DrawMode.TriangleFan)
{
vertexIds = new uint[] { 0, singleNodeVertexId - 1, singleNodeVertexId, };
positions = FillPickedGeometrysPosition(vertexIds);
}
else if (mode == DrawMode.TrianglesAdjacency || mode == DrawMode.TriangleStripAdjacency)
{
vertexIds = new uint[] { singleNodeVertexId - 4, singleNodeVertexId - 2, singleNodeVertexId, };
positions = FillPickedGeometrysPosition(vertexIds);
}
else
{
vertexIds = new uint[] { singleNodeVertexId - 2, singleNodeVertexId - 1, singleNodeVertexId, };
positions = FillPickedGeometrysPosition(singleNodeVertexId - 2, 3);
}
break;
case GeometryType.Quad:
vertexIds = new uint[] { singleNodeVertexId - 3, singleNodeVertexId - 2, singleNodeVertexId - 1, singleNodeVertexId, };
positions = FillPickedGeometrysPosition(singleNodeVertexId - 3, 4);
break;
case GeometryType.Polygon:
vertexIds = new uint[vertexCount];
for (uint i = 0; i < vertexCount; i++)
{
vertexIds[i] = singleNodeVertexId + i;
}
positions = FillPickedGeometrysPosition(0, vertexCount);
break;
default:
throw new NotDealWithNewEnumItemException(typeof(GeometryType));
}
}
PickedGeometry pickedGeometry = new PickedGeometry(typeOfMode, positions, vertexIds, stageVertexId, this.Node);
return(pickedGeometry);
}
private PickedGeometry PickWhateverItIs(uint stageVertexId, uint lastVertexId, DrawMode mode, GeometryType typeOfMode)
{
PickedGeometry pickedGeometry = new PickedGeometry();
pickedGeometry.GeometryType = typeOfMode;
pickedGeometry.StageVertexId = stageVertexId;
pickedGeometry.From = this;
// Fill primitive's position information.
int vertexCount = typeOfMode.GetVertexCount();
if (vertexCount == -1) { vertexCount = this.positionBufferPtr.Length; }
if (lastVertexId == 0 && vertexCount == 2)
{
// This is when mode is GL_LINE_LOOP and picked last line(the loop back one)
PickingLastLineInLineLoop(pickedGeometry);
return pickedGeometry;
}
// Other conditions
switch (typeOfMode)
{
case GeometryType.Line:
pickedGeometry.Indexes = new uint[] { lastVertexId - 1, lastVertexId, };
pickedGeometry.Positions = FillPickedGeometrysPosition(lastVertexId - 1, 2);
break;
case GeometryType.Triangle:
if (mode == DrawMode.TriangleFan)
{
pickedGeometry.Indexes = new uint[] { 0, lastVertexId - 1, lastVertexId, };
pickedGeometry.Positions = FillPickedGeometrysPosition(pickedGeometry.Indexes);
}
else if (mode == DrawMode.TrianglesAdjacency || mode == DrawMode.TriangleStripAdjacency)
{
pickedGeometry.Indexes = new uint[] { lastVertexId - 4, lastVertexId - 2, lastVertexId, };
pickedGeometry.Positions = FillPickedGeometrysPosition(pickedGeometry.Indexes);
}
else
{
pickedGeometry.Indexes = new uint[] { lastVertexId - 2, lastVertexId - 1, lastVertexId, };
pickedGeometry.Positions = FillPickedGeometrysPosition(lastVertexId - 2, 3);
}
break;
case GeometryType.Quad:
pickedGeometry.Indexes = new uint[] { lastVertexId - 3, lastVertexId - 2, lastVertexId - 1, lastVertexId, };
pickedGeometry.Positions = FillPickedGeometrysPosition(lastVertexId - 3, 4);
break;
case GeometryType.Polygon:
pickedGeometry.Indexes = new uint[vertexCount];
for (uint i = 0; i < vertexCount; i++)
{ pickedGeometry.Indexes[i] = lastVertexId + i; }
pickedGeometry.Positions = FillPickedGeometrysPosition(0, vertexCount);
break;
default:
throw new NotImplementedException();
}
return pickedGeometry;
}
