/// <summary>
/// This method gets the debug geometry from the PhysX scene, and draws it to the screen. This is useful for
/// making sure that models are being correctly placed within their PhysX bounding boxes, and for checking to
/// see if things are physically working without actually drawing them.
/// </summary>
/// <param name="scene">The PhysX scene that we want to draw debug geometry for.</param>
public void DrawPhysXDebug(StillDesign.PhysX.Scene scene)
{
Camera cam = (Camera)this.Game.Services.GetService(typeof(ICameraService));
_graphics.VertexDeclaration = new VertexDeclaration(_graphics, VertexPositionColor.VertexElements);
BasicEffect debugEffect = new BasicEffect(_graphics, null);
debugEffect.World = Matrix.Identity;
debugEffect.View = cam.View;
debugEffect.Projection = cam.Projection;
DebugRenderable data = scene.GetDebugRenderable();
debugEffect.Begin();
foreach (EffectPass pass in debugEffect.CurrentTechnique.Passes)
{
pass.Begin();
if (data.PointCount > 0)
{
DebugPoint[] points = data.GetDebugPoints();
_graphics.DrawUserPrimitives<DebugPoint>(PrimitiveType.PointList, points, 0, points.Length);
}
if (data.LineCount > 0)
{
DebugLine[] lines = data.GetDebugLines();
VertexPositionColor[] vertices = new VertexPositionColor[data.LineCount * 2];
for (int x = 0; x < data.LineCount; x++)
{
DebugLine line = lines[x];
vertices[x * 2 + 0] = new VertexPositionColor(line.Point0, Int32ToColor(line.Color));
vertices[x * 2 + 1] = new VertexPositionColor(line.Point1, Int32ToColor(line.Color));
}
_graphics.DrawUserPrimitives<VertexPositionColor>(PrimitiveType.LineList, vertices, 0, lines.Length);
}
if (data.TriangleCount > 0)
{
DebugTriangle[] triangles = data.GetDebugTriangles();
VertexPositionColor[] vertices = new VertexPositionColor[data.TriangleCount * 3];
for (int x = 0; x < data.TriangleCount; x++)
{
DebugTriangle triangle = triangles[x];
vertices[x * 3 + 0] = new VertexPositionColor(triangle.Point0, Int32ToColor(triangle.Color));
vertices[x * 3 + 1] = new VertexPositionColor(triangle.Point1, Int32ToColor(triangle.Color));
vertices[x * 3 + 2] = new VertexPositionColor(triangle.Point2, Int32ToColor(triangle.Color));
}
_graphics.DrawUserPrimitives<VertexPositionColor>(PrimitiveType.TriangleList, vertices, 0, triangles.Length);
}
pass.End();
}
debugEffect.End();
}
