/// <summary>
/// Draws the animated model.
/// </summary>
/// <param name="gameTime">The elapsed game time.</param>
/// <remarks>
/// This method will only be called if all the following points are true:
/// <list type="bullet">
/// <item>
/// <description>The entity passes a frustrum culling test.</description>
/// </item>
/// <item>
/// <description>The parent of the owner <see cref="Entity" /> of the <see cref="Drawable" /> cascades its visibility to its children and it is visible.</description>
/// </item>
/// <item>
/// <description>The <see cref="Drawable" /> is active.</description>
/// </item>
/// <item>
/// <description>The owner <see cref="Entity" /> of the <see cref="Drawable" /> is active and visible.</description>
/// </item>
/// </list>
/// </remarks>
public override void Draw(TimeSpan gameTime)
{
if (this.lastModelId != this.skinnedModel.GetHashCode())
{
this.meshMaterials = new Material[this.skinnedModel.Meshes.Count];
this.updateVertexBuffer = new bool[this.skinnedModel.Meshes.Count];
this.lastModelId = this.skinnedModel.GetHashCode();
}
if (this.LODEnabled)
{
this.passUpdate--;
if (this.passUpdate <= 0)
{
float distanceToCamera = Vector3.Distance(this.Transform.Position, this.RenderManager.CurrentDrawingCamera3D.Position);
float amount = (distanceToCamera - this.lodMinDistance) / this.lodDiffDistance;
if (amount > 1)
{
amount = 1;
}
if (amount < 0)
{
amount = 0;
}
this.passUpdate = (int)(amount * Quality);
this.updateLod = true;
}
}
float zOrder = Vector3.DistanceSquared(this.RenderManager.CurrentDrawingCamera3D.Position, this.Transform.Position);
bool needsUpdate = (!LowPerformance && this.lastKeyFrame != this.Animation.Frame && this.updateLod) && this.lastAnimTime != this.Animation.TotalAnimTime;
this.lastAnimTime = this.Animation.TotalAnimTime;
if (needsUpdate)
{
this.UpdateTransforms();
}
for (int i = 0; i < this.skinnedModel.Meshes.Count; i++)
{
Material currentMaterial;
SkinnedMesh currentMesh = this.skinnedModel.Meshes[i];
this.updateVertexBuffer[i] |= needsUpdate;
if (this.MaterialMap.Materials.ContainsKey(currentMesh.Name))
{
currentMaterial = this.MaterialMap.Materials[currentMesh.Name];
}
else
{
currentMaterial = this.MaterialMap.DefaultMaterial;
}
this.meshMaterials[i] = currentMaterial;
if (currentMaterial != null)
{
if (this.updateVertexBuffer[i])
{
currentMesh.SetBones(this.skinTransforms, true);
this.GraphicsDevice.BindVertexBuffer(currentMesh.VertexBuffer);
this.updateVertexBuffer[i] = false;
}
currentMesh.ZOrder = zOrder;
this.GraphicsDevice.UnsetBuffers();
Matrix transform = this.Transform.WorldTransform;
this.RenderManager.DrawMesh(currentMesh, currentMaterial, ref transform, false);
this.GraphicsDevice.UnsetBuffers();
}
}
if (this.LODEnabled)
{
this.updateLod = false;
}
this.lastKeyFrame = this.Animation.Frame;
}