public override void Draw(GameTime time)
{
// Clear all pipelines from previously collected models
foreach (var pipeline in renderSystem.Pipelines)
{
var renderMeshState = pipeline.GetOrCreateModelRendererState();
renderMeshState.RenderModels.Clear();
}
// Collect models for this frame
foreach (var matchingEntity in enabledEntities)
{
// Skip model not enabled
if (!matchingEntity.Value.ModelComponent.Enabled)
{
continue;
}
var modelViewHierarchy = matchingEntity.Value.ModelComponent.ModelViewHierarchy;
var transformationComponent = matchingEntity.Value.TransformationComponent;
var links = matchingEntity.Value.Links;
// Update model view hierarchy node matrices
modelViewHierarchy.NodeTransformations[0].LocalMatrix = transformationComponent.WorldMatrix;
modelViewHierarchy.UpdateMatrices();
if (links != null)
{
// Update links: transfer node/bone transformation to a specific entity transformation
// Then update this entity transformation tree
// TODO: Ideally, we should order update (matchingEntities?) to avoid updating a ModelViewHierarchy before its transformation is updated.
foreach (var link in matchingEntity.Value.Links)
{
var linkTransformation = link.Entity.Transformation;
linkTransformation.LocalMatrix = modelViewHierarchy.NodeTransformations[link.NodeIndex].WorldMatrix;
linkTransformationToUpdate.Clear();
linkTransformationToUpdate.Add(linkTransformation);
TransformationProcessor.UpdateTransformations(linkTransformationToUpdate, false);
}
}
foreach (var renderModelEntry in matchingEntity.Value.RenderModels)
{
var renderModelState = renderModelEntry.Key;
var renderModel = renderModelEntry.Value;
// Add model to rendering
renderModelState.RenderModels.Add(renderModel);
// Upload matrices to TransformationKeys.World
modelViewHierarchy.UpdateToRenderModel(renderModel);
// Upload skinning blend matrices
MeshSkinningUpdater.Update(modelViewHierarchy, renderModel);
}
}
}
protected override void Update(GameTime time)
{
if (mvh != null)
{
mvh.UpdateMatrices();
mvh.UpdateToRenderModel(renderModel);
MeshSkinningUpdater.Update(mvh, renderModel);
}
base.Update(time);
}