/// <summary>
/// Constructor</summary>
/// <param name="renderStateGuardian">Render state guardian</param>
public PickAction(RenderStateGuardian renderStateGuardian)
: base(renderStateGuardian)
{
m_selectionBuffer = new int[65536];
m_openGlHits = 0;
m_pickTolerance = 3.0f;
m_viewFrust0 = new Frustum();
}
/// <summary>
/// Constructor</summary>
/// <param name="renderStateGuardian">Render state guardian</param>
public PickAction(RenderStateGuardian renderStateGuardian)
: base(renderStateGuardian)
{
m_selectionBuffer = new int[65536];
m_openGlHits = 0;
m_pickTolerance = 3.0f;
m_viewFrust0 = new Frustum();
}
/// <summary>
/// Registers all of the default render state handlers on the supplied RenderStateGuardian</summary>
/// <param name="rsg">RenderStateGuardian to register default handlers on</param>
public static void InitRenderStateGuardian(RenderStateGuardian rsg)
{
rsg.RegisterRenderStateHandler((int)RenderMode.Smooth, CommitSmooth);
rsg.RegisterRenderStateHandler((int)RenderMode.Wireframe, CommitWire);
rsg.RegisterRenderStateHandler((int)RenderMode.Alpha, CommitAlpha);
rsg.RegisterRenderStateHandler((int)RenderMode.Lit, CommitLighting);
rsg.RegisterRenderStateHandler((int)RenderMode.DisableZBuffer, CommitZBuffer);
rsg.RegisterRenderStateHandler((int)RenderMode.Textured, CommitTextures);
rsg.RegisterRenderStateHandler((int)RenderMode.CullBackFace, CommitCullBackFace);
rsg.RegisterRenderStateHandler((int)RenderMode.DisableZBufferWrite, CommitDepthMask);
}
/// <summary>
/// Registers all of the default render state handlers on the supplied RenderStateGuardian</summary>
/// <param name="rsg">RenderStateGuardian to register default handlers on</param>
public static void InitRenderStateGuardian(RenderStateGuardian rsg)
{
rsg.RegisterRenderStateHandler((int)RenderMode.Smooth, CommitSmooth);
rsg.RegisterRenderStateHandler((int)RenderMode.Wireframe, CommitWire);
rsg.RegisterRenderStateHandler((int)RenderMode.Alpha, CommitAlpha);
rsg.RegisterRenderStateHandler((int)RenderMode.Lit, CommitLighting);
rsg.RegisterRenderStateHandler((int)RenderMode.DisableZBuffer, CommitZBuffer);
rsg.RegisterRenderStateHandler((int)RenderMode.Textured, CommitTextures);
rsg.RegisterRenderStateHandler((int)RenderMode.CullBackFace, CommitCullBackFace);
rsg.RegisterRenderStateHandler((int)RenderMode.DisableZBufferWrite, CommitDepthMask);
}
// For 'action', first set the TypeFilter and call Init. If picking is true and pickManipulatorOnly
// is true, then only the currently active manipulator is tested against, which is a huge speed-up.
private void Render(IRenderAction action, bool picking, bool pickManipulatorOnly)
{
base.BeginPaint(picking);
action.Title = Camera.ViewTypeName;
action.ViewportWidth = Width;
action.ViewportHeight = Height;
// If we're doing a picking operation, then we don't need to display the results to the user, etc.
if (picking)
{
RenderState pickState = new RenderState(m_renderState);
pickState.RenderMode &= ~(RenderMode.Textured | RenderMode.Lit | RenderMode.Alpha);
pickState.OverrideChildState = RenderMode.Textured | RenderMode.Lit | RenderMode.Alpha;
pickState.InheritState = 0;
RenderStateGuardian.Reset();
// Manipulator picking can be further optimized to only render the manipulator.
if (pickManipulatorOnly &&
m_manipulator != null &&
m_manipulatorNode != null)
{
// Replace the scene node's children temporarily with just our one child of interest.
// Replacing the children is easier than creating a new Scene because the manipulators
// need the HitRecord.GraphPath to have the full correct Scene, not a temp Scene.
List <SceneNode> originalChildren = new List <SceneNode>(m_scene.Children);
m_scene.Children.Clear();
m_scene.Children.Add(m_manipulatorNode);
m_scene.StateStack.Push(pickState);
action.PushMatrix(m_manipulatorParentToWorld, false);
action.Dispatch(m_scene, Camera);
action.PopMatrix();
m_scene.StateStack.Pop();
m_scene.Children.Clear();
foreach (SceneNode node in originalChildren)
{
m_scene.Children.Add(node);
}
}
else
{ //Regular picking. Render the whole scene.
m_scene.StateStack.Push(pickState);
action.Dispatch(m_scene, Camera);
m_scene.StateStack.Pop();
}
// When picking, we don't want to display this buffer, so don't swap OpenGl buffers.
// This property gets reset by base.EndPaint().
SwapBuffers = false;
}
else
{
m_scene.StateStack.Push(m_renderState);
RenderStateGuardian.Reset();
action.Dispatch(m_scene, Camera);
RenderAxisSystem(action);
m_scene.StateStack.Pop();
}
base.EndPaint();
}
/// <summary>
/// Constructs a RenderAction</summary>
/// <param name="renderStateGuardian">Render state guardian</param>
public RenderAction(RenderStateGuardian renderStateGuardian)
{
m_renderStateGuardian = renderStateGuardian;
Clear();
}
/// <summary>
/// Constructs a RenderAction</summary>
/// <param name="renderStateGuardian">Render state guardian</param>
public RenderAction(RenderStateGuardian renderStateGuardian)
{
m_renderStateGuardian = renderStateGuardian;
Clear();
}
