/// <summary>
///
/// </summary>
protected override void DoInitialize()
{
base.DoInitialize();
IPickableRenderMethod renderUnit = this.pickingRenderUnitBuilder.ToRenderMethod(this.RenderUnit.Model);
var pickerList = new List <PickerBase>();
foreach (var vao in renderUnit.VertexArrayObjects)
{
IDrawCommand cmd = vao.DrawCommand;
if (cmd is DrawArraysCmd)
//|| cmd is MultiDrawArraysCmd)
{
//I don't know what will happen during picking if 'overlap' exists in glMultiDrawArrays(..). I don't care either, because that is a problem that should be solved in modeling stage.
VertexBuffer positionBuffer = vao.VertexAttributes[0].Buffer; // according to base.DoInitialize(), this is the position buffer of the only vertex attribute.
pickerList.Add(new DrawArraysPicker(this, positionBuffer, cmd as DrawArraysCmd));
}
else if (cmd is DrawElementsCmd)
//|| cmd is MultiDrawElementsCmd)
{
//I don't know what will happen during picking if 'overlap' exists in glMultiDrawElements(..). I don't care either, because that is a problem that should be solved in modeling stage.
VertexBuffer positionBuffer = vao.VertexAttributes[0].Buffer; // according to base.DoInitialize(), this is the position buffer of the only vertex attribute.
pickerList.Add(new DrawElementsPicker(this, positionBuffer, cmd as DrawElementsCmd));
}
else
{
throw new NotImplementedException(string.Format("`{0}` is a IDrawCommand type that has not been supported for `IPickable`.", cmd.GetType()));
}
}
this.picker = pickerList.ToArray();
this.PickingRenderUnit = renderUnit;
}
