/// <summary>
/// Draws the light with shadows from the hulls
/// </summary>
/// <param name="lightmapEffect">The lightmap effect.</param>
/// <param name="helper">The helper.</param>
/// <param name="hulls">The hulls.</param>
public void Draw(LightmapEffect lightmapEffect, ILightmapPass lightmapPass, ILightmapDrawBuffer helper, IEnumerable<IHull> hulls)
{
lightmapEffect.Effect.GraphicsDevice.ScissorRectangle = lightmapPass.GetScissor(this);
// lightmapEffect.Effect.GraphicsDevice.ScissorRectangle = new Rectangle(0, 0, 200, 200);
// 1) Clear hull buffers
helper.Clear();
// 2) Prepare to draw hulls
foreach (var hull in hulls.Where(x => Vector2.DistanceSquared(this.Position, x.Position) < this.RadiusSquared + x.RadiusSquared))
{
hull.Draw(helper);
}
// 3) Set lightmapEffect stuff
lightmapEffect.LightPosition = this.Position;
lightmapEffect.LightTexture = this.Texture;
lightmapEffect.LightInesityFactor = this.IntensityFactor;
switch (this.ShadowType)
{
case ShadowType.Illuminated:
lightmapEffect.CurrentTechnique = lightmapEffect.IlluminatedShadowTechnique;
break;
case ShadowType.Occluded:
lightmapEffect.CurrentTechnique = lightmapEffect.OccludedShadowTechnique;
break;
default:
lightmapEffect.CurrentTechnique = lightmapEffect.SolidShadowTechnique;
break;
}
// 4) Draw hulls for each shadow pass
foreach (var pass in lightmapEffect.CurrentTechnique.Passes)
{
pass.Apply();
helper.Draw();
}
// 5) Draw light for each light pass
lightmapEffect.CurrentTechnique = lightmapEffect.LightTechnique;
foreach (var pass in lightmapEffect.CurrentTechnique.Passes)
{
pass.Apply();
helper.DrawClippedFov(this.Position, this.Rotation, this.Radius * 2, this.Color, this.Fov);
}
// 6) Clear the target's alpha chanel
lightmapEffect.CurrentTechnique = lightmapEffect.AlphaClearTechnique;
//lightmapEffect.Effect.GraphicsDevice.ScissorRectangle = lightmapEffect.Effect.GraphicsDevice.Viewport.Bounds;
foreach (var pass in lightmapEffect.CurrentTechnique.Passes)
{
pass.Apply();
helper.DrawUnitQuad();
}
}
