/// <summary>
///
/// </summary>
/// <param name="arg"></param>
/// <param name="primitiveInfo"></param>
/// <param name="picker"></param>
/// <returns></returns>
internal override uint Search(PickingEventArgs arg,
RecognizedPrimitiveInfo primitiveInfo,
OneIndexPicker picker)
{
uint[] indexList = primitiveInfo.VertexIds;
if (indexList.Length != 3)
{
throw new ArgumentException();
}
OneIndexBuffer buffer = indexList.GenIndexBuffer(DrawMode.Points, BufferUsage.StaticDraw);
picker.Renderer.Render4InnerPicking(arg, buffer);
uint id = ColorCodedPicking.ReadStageVertexId(arg.X, arg.Y);
buffer.Dispose();
if (id == indexList[0] || id == indexList[1] || id == indexList[2])
{
return(id);
}
else
{
throw new Exception("This should not happen!");
}
}
/// <summary>
///
/// </summary>
/// <param name="arg"></param>
/// <param name="primitiveInfo"></param>
/// <param name="picker"></param>
/// <returns></returns>
internal override uint[] Search(PickingEventArgs arg,
RecognizedPrimitiveInfo primitiveInfo,
OneIndexPicker picker)
{
uint[] indexList = primitiveInfo.VertexIds;
if (indexList.Length < 3)
{
throw new ArgumentException();
}
OneIndexBuffer buffer = indexList.GenIndexBuffer(DrawMode.LineLoop, BufferUsage.StaticDraw);
picker.Node.Render4InnerPicking(arg, buffer);
uint id = ColorCodedPicking.ReadStageVertexId(arg.X, arg.Y);
buffer.Dispose();
if (id == indexList[0])
{
return(new uint[] { indexList[indexList.Length - 1], id, });
}
else
{
uint[] result = null;
for (int i = 1; i < indexList.Length; 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!");
}
}
}
/// <summary>
///
/// </summary>
/// <param name="arg"></param>
/// <param name="x">mouse position(Left Down is (0, 0)).</param>
/// <param name="y">mouse position(Left Down is (0, 0)).</param>
/// <param name="primitiveInfo"></param>
/// <param name="modernRenderer"></param>
/// <returns></returns>
internal override uint[] Search(PickEventArgs arg,
RecognizedPrimitiveInfo primitiveInfo,
OneIndexPicker picker)
{
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], }; }
var targetIndexList = new uint[6] {
indexList[0], indexList[1], indexList[1], indexList[2], indexList[2], indexList[0],
};
OneIndexBuffer buffer = targetIndexList.GenIndexBuffer(DrawMode.Lines, BufferUsage.StaticDraw);
picker.Renderer.Render4InnerPicking(arg, buffer);
uint id = ColorCodedPicking.ReadStageVertexId(arg.X, arg.Y);
buffer.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!");
}
}