/// <summary>
/// Explodes each object in the instance definition into a list of display objects
/// </summary>
public new void ExplodeIntoArray(RMModel model, List<DisplayObject> array, Transform xform)
{
RMModel currentModel = model;
int instanceCount = InstanceDefinition.GetObjectIds ().GetLength (0);
for (int i = 0; i < instanceCount; i++) {
Guid guid = InstanceDefinition.GetObjectIds () [i];
ModelObject modelObject = currentModel.ModelObjectWithGUID (guid);
if (modelObject != null) {
try {
modelObject.LayerIndex = LayerIndex;
var modelMesh = modelObject as ModelMesh;
if (modelMesh != null) {
modelMesh.ExplodeIntoArray (model, array, xform);
} else {
var modelInstanceRef = modelObject as ModelInstanceRef;
if (modelInstanceRef != null) {
modelInstanceRef.ExplodeIntoArray (model, array, xform);
}
}
} catch (Exception ex) {
System.Diagnostics.Debug.WriteLine ("Caught Exception: " + ex.Message);
System.Diagnostics.Debug.WriteLine ("This is caused by a null Mesh on an InstanceRef");
Rhino.Runtime.HostUtils.ExceptionReport (ex);
}
}
}
}
/// <summary>
/// Calls into this reference's ModelInstanceDef ExplodeIntoArray method
/// </summary>
public new void ExplodeIntoArray(RMModel model, List<DisplayObject> array, Transform initialXform)
{
Transform newXform = initialXform * m_xform;
RMModel currentModel = model;
ModelObject modelObject = currentModel.ModelObjectWithGUID (m_definitionGUID);
(modelObject as ModelInstanceDef).LayerIndex = this.LayerIndex;
(modelObject as ModelInstanceDef).ExplodeIntoArray (model, array, newXform);
}
/// <summary>
/// Explodes a list of DisplayObjects into DisplayMeshes
/// </summary>
public new void ExplodeIntoArray(RMModel model, List<DisplayObject> array, Transform xform)
{
bool isIdentityXform = xform.Equals (Transform.Identity);
if (DisplayMeshes == null)
return;
foreach (DisplayMesh mesh in DisplayMeshes) {
if (isIdentityXform) {
mesh.IsVisible = Visible;
mesh.LayerIndex = LayerIndex;
array.Add (mesh);
} else {
DisplayInstanceMesh instanceMesh = new DisplayInstanceMesh (mesh, xform);
instanceMesh.IsVisible = Visible;
instanceMesh.LayerIndex = LayerIndex;
array.Add (instanceMesh);
}
}
}
/// <summary>
/// Creates a default light and enables the active shader
/// </summary>
private void SetupShader(RhGLShaderProgram shader, RMModel model, ViewportInfo viewport)
{
// Check to make sure we actually have an active shader...
if (shader != null) {
// Enable...
shader.Enable ();
// Now setup and initialize frustum and lighting...
int near, far;
viewport.GetScreenPort (out near, out far);
viewport.SetScreenPort ((int)Frame.Left, (int)Frame.Right, (int)Frame.Bottom, (int)Frame.Top, near, far);
shader.SetupViewport (viewport);
Rhino.Geometry.Light light = CreateDefaultLight ();
shader.SetupLight (light);
light.Dispose ();
}
}
/// <summary>
/// Draws all transparent meshes
/// </summary>
private void RenderTransparentObjects(RMModel model)
{
// Drawing transparent meshes is a 3 pass process...
//
// Pass #1: With depth buffer writing OFF
// i. Draw all objects' backfaces
// ii. Draw all "open" objects' front faces.
//
// Pass #2: With depth buffer writing ON
// i. Draw all objects' front faces
//
// Pass #3: With depth buffer writing ON
// i. Draw all "open" objects' back faces
//
// Provided we actually have a model to render...
if (model != null) {
CurrentMaterial = new DisplayMaterial (); //reset to the default (unset) material
// ... render all transparent meshes...
if (model.TransparentObjects.Count > 0) {
//Pass #1
GL.DepthMask (false);
GL.Enable (EnableCap.CullFace);
// i. Draw all objects' backfaces
GL.CullFace (CullFaceMode.Front);
foreach (DisplayMesh mesh in model.TransparentObjects) {
if (mesh != null) {
RenderObject (mesh, Viewport, false);
// ii. Draw all "open" objects' front faces.
if (!mesh.IsClosed) {
GL.CullFace (CullFaceMode.Back);
RenderObject (mesh, Viewport, false);
}
}
}
// Pass #2: Draw all objects' front faces
GL.DepthMask (true);
GL.CullFace (CullFaceMode.Back);
foreach (DisplayMesh mesh in model.TransparentObjects)
RenderObject (mesh, Viewport, false);
// Pass #3: Draw all "open" objects' back faces
GL.CullFace (CullFaceMode.Front);
foreach (DisplayMesh mesh in model.TransparentObjects) {
if ((mesh != null) && (!mesh.IsClosed))
RenderObject (mesh, Viewport, false);
}
GL.Disable (EnableCap.CullFace);
}
// ...then render all transparent instance meshes...
if (model.TransparentInstanceObjects.Count > 0) {
//Pass #1
GL.DepthMask (false);
GL.Enable (EnableCap.CullFace);
// i. Draw all objects' backfaces
GL.CullFace (CullFaceMode.Front);
foreach (DisplayInstanceMesh instance in model.TransparentInstanceObjects) {
if (instance.Mesh != null) {
RenderObject (instance, Viewport, true);
// ii. Draw all "open" objects' front faces.
if (!instance.Mesh.IsClosed) {
GL.CullFace (CullFaceMode.Back);
RenderObject (instance, Viewport, true);
}
}
}
// Pass #2: Draw all objects' front faces
GL.DepthMask (true);
GL.CullFace (CullFaceMode.Back);
foreach (DisplayInstanceMesh instance in model.TransparentInstanceObjects)
RenderObject (instance, Viewport, true);
// Pass #3: Draw all "open" objects' back faces
GL.CullFace (CullFaceMode.Front);
foreach (DisplayInstanceMesh instance in model.TransparentInstanceObjects) {
if ((instance.Mesh != null) && (!instance.Mesh.IsClosed))
RenderObject (instance, Viewport, true);
}
GL.Disable (EnableCap.CullFace);
}
}
}
/// <summary>
/// IRenderer interface method
/// Renders a model in a viewport
/// </summary>
public bool RenderModel(RMModel model, Rhino.DocObjects.ViewportInfo viewport)
{
if (null == model || null == viewport || !model.IsReadyForRendering)
return false;
Model = model;
CheckGLError ("intro call"); //HACK: necessary on some Android GPUs (don't delete this check)
viewport.SetFrustumNearFar (model.BBox);
// Disable Blending and set the depth function
GL.DepthFunc (DepthFunction.Gequal);
GL.Disable (EnableCap.Blend);
// Get the shader...
ActiveShader = FastDrawing ? GetShader ("PerVertexLighting") : GetShader ("PerPixelLighting");
// Render calls...
if (model != null) {
// First, render all opaque objects that are not instances
foreach (var obj in model.DisplayMeshes) {
if (obj != null)
RenderObject (obj, viewport, false);
}
// Second, render all opaque objects that are instances
foreach (var obj in model.DisplayInstanceMeshes) {
if (obj != null)
RenderObject (obj, viewport, true);
}
// Third, we're done drawing our instances, so set the ModelViewMatrix's XForm back to the identity matrix.
ActiveShader.SetModelViewMatrix (Rhino.Geometry.Transform.Identity);
// Fourth, render all transparent meshes...
RenderTransparentObjects (model);
}
// Disable the shader
ActiveShader.Disable ();
return true;
}
/// <remarks>
/// For Debugging purposes only. If this method is being called, then some object
/// has not been properly cast into a ModelMesh, a ModelInstanceDef, or a ModelInstanceRef.
/// </remarks>
public void ExplodeIntoArray(RMModel model, List<DisplayObject> array, Transform xForm)
{
Debug.WriteLine("Missing implementation or implementation should happen in derived class");
}
