private void ProcessShape(SceneReaderContext context)
{
Primitive prim = null;
AreaLight area = null;
if (!context.CurrentTransform.IsAnimated)
{
// Create primitive for static shape.
var shape = Factories.MakeShape(ImplementationType,
context.CurrentTransform[0], context.GraphicsState.ReverseOrientation,
Parameters);
var material = context.GraphicsState.CreateMaterial(
Parameters, context.CurrentTransform[0]);
// Possibly create area light for shape.
if (!string.IsNullOrEmpty(context.GraphicsState.AreaLight))
{
area = Factories.MakeAreaLight(
context.GraphicsState.AreaLight,
context.CurrentTransform[0],
context.GraphicsState.AreaLightParams,
shape);
}
prim = new GeometricPrimitive(shape, material, area);
}
else
{
// Create primitive for animated shape.
var shape = Factories.MakeShape(ImplementationType, new Transform(),
context.GraphicsState.ReverseOrientation, Parameters);
var material = context.GraphicsState.CreateMaterial(
Parameters, context.CurrentTransform[0]);
// Get animatedWorldToObject transform for shape.
var worldToObj0 = Transform.Invert(context.CurrentTransform[0]);
var worldToObj1 = Transform.Invert(context.CurrentTransform[1]);
var animatedWorldToObject = new AnimatedTransform(
worldToObj0, context.RenderOptions.TransformStartTime,
worldToObj1, context.RenderOptions.TransformEndTime);
Primitive basePrim = new GeometricPrimitive(shape, material, null);
if (!basePrim.CanIntersect)
{
// Refine animated shape and create BVH if more than one shape created.
var refinedPrimitives = basePrim.FullyRefine();
if (refinedPrimitives.Count == 0)
{
return;
}
basePrim = (refinedPrimitives.Count > 1)
? new BoundingVolumeHierarchyAccelerator(refinedPrimitives)
: refinedPrimitives[0];
}
prim = new TransformedPrimitive(basePrim, animatedWorldToObject);
}
// Add primitive to scene or current instance.
if (context.RenderOptions.CurrentInstance != null)
{
context.RenderOptions.CurrentInstance.Add(prim);
}
else
{
context.RenderOptions.Primitives.Add(prim);
if (area != null)
{
context.RenderOptions.Lights.Add(area);
}
}
}