/// <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);
}
private static bool AdjustFrustum(ViewportInfo vp, ClippingInfo clipping)
{
vp.SetFrustumNearFar (vp.FrustumNear * 0.1, vp.FrustumFar * 10);
return true;
}
public static bool SetupFrustum(ViewportInfo vp, ClippingInfo clipping)
{
double n0 = vp.FrustumNear;
double f0 = vp.FrustumFar;
// Because picking relies heavily on the projection, we first set the
// viewport frustum here, capture and save it, then let the conduits
// do what ever they want with it...eventually the viewport will be put
// back to the captured state before leaving the pipeline...
ClippingInfo m_SavedClipping = clipping;
vp.SetFrustumNearFar(clipping.bbox_near, clipping.bbox_far,
clipping.min_near_dist, clipping.min_near_over_far,
clipping.target_dist
);
vp.GetFrustum(out m_SavedClipping.left,
out m_SavedClipping.right,
out m_SavedClipping.bottom,
out m_SavedClipping.top,
out m_SavedClipping.bbox_near,
out m_SavedClipping.bbox_far);
// Next, set the values that the pipeline will actually use...
if (!(AdjustFrustum(vp, clipping)))
return false;
return true;
}
