public void AddVertex(HullVertex hullVertex)
{
this.vertices.Add(hullVertex);
}
/// <summary>
/// Draws the hull.
/// </summary>
/// <param name="drawBuffer">The Lightmap Draw Buffer</param>
public void Draw(ILightmapDrawBuffer drawBuffer)
{
// Create the matrices (3X speed boost versus prior version)
this.cos = (float)Math.Cos(this.angle);
this.sin = (float)Math.Sin(this.angle);
// vertexMatrix = scale * rotation * translation;
this.vertexMatrix.M11 = this.scale.X * this.cos;
this.vertexMatrix.M12 = this.scale.X * this.sin;
this.vertexMatrix.M21 = this.scale.Y * -this.sin;
this.vertexMatrix.M22 = this.scale.Y * this.cos;
this.vertexMatrix.M41 = this.position.X;
this.vertexMatrix.M42 = this.position.Y;
// normalMatrix = scaleInv * rotation;
this.normalMatrix.M11 = (1f / this.scale.X) * this.cos;
this.normalMatrix.M12 = (1f / this.scale.X) * this.sin;
this.normalMatrix.M21 = (1f / this.scale.Y) * -this.sin;
this.normalMatrix.M22 = (1f / this.scale.Y) * this.cos;
drawBuffer.SetStartVertex();
// Add the vertices to the buffer
var hullVerticesLength = this.Vertices.Length;
for (var i = 0; i < hullVerticesLength; i++)
{
// Transform the vertices to world coordinates
this.point = this.Vertices[i];
Vector2.Transform(ref this.point.Position, ref this.vertexMatrix, out this.hullVertex.Position);
Vector2.TransformNormal(ref this.point.Normal, ref this.normalMatrix, out this.hullVertex.Normal);
this.hullVertex.Color = ShadowBlack;
drawBuffer.AddVertex(this.hullVertex);
}
var hullIndicesLength = this.Indices.Length;
for (var i = 0; i < hullIndicesLength; i++)
{
drawBuffer.AddIndex(this.Indices[i]);
}
}
