public float GetRayToLineSegmentIntersection(LineOccluder lineOccluder)
{
//Direction.Normalize();
Vector2 v1 = Origin - lineOccluder.StartPoint;
Vector2 v2 = lineOccluder.EndPoint - lineOccluder.StartPoint;
Vector2 v3 = new Vector2(-Direction.Y, Direction.X);
float dot = Vector2.Dot(v2, v3);
if (Math.Abs(dot) < 0.000001f)
{
return(-1.0f);
}
float t1 = MathCompanion.CrossProduct(v2, v1) / dot;
float t2 = Vector2.Dot(v1, v3) / dot;
if (t1 >= 0.0f && t2 >= 0.0f && t2 <= 1.0f)
{
t = t1;
HitSomething = true;
return(t1);
}
return(-1.0f);
}
public ShadowCaster()
{
lineOccluders = new LineOccluder[4];
for (int i = 0; i < lineOccluders.Length; i++)
{
lineOccluders[i] = new LineOccluder();
}
}
public LineOccluder[] ConvertToLineOccluders(Rectangle Rect)
{
lineOccluders[0] = new LineOccluder(new Vector2(Rect.Left, Rect.Top), new Vector2(Rect.Right, Rect.Top));
lineOccluders[1] = new LineOccluder(new Vector2(Rect.Right, Rect.Top), new Vector2(Rect.Right, Rect.Bottom));
lineOccluders[2] = new LineOccluder(new Vector2(Rect.Right, Rect.Bottom), new Vector2(Rect.Left, Rect.Bottom));
lineOccluders[3] = new LineOccluder(new Vector2(Rect.Left, Rect.Bottom), new Vector2(Rect.Left, Rect.Top));
return(lineOccluders);
}
public override void Start()
{
SR = gameObject.GetComponent <SpriteRenderer>();
Rectangle Occluder = SR.Sprite.DynamicScaledRect();
lineOccluders[0] = new LineOccluder(new Vector2(Occluder.Left, Occluder.Top), new Vector2(Occluder.Right, Occluder.Top));
lineOccluders[1] = new LineOccluder(new Vector2(Occluder.Right, Occluder.Top), new Vector2(Occluder.Right, Occluder.Bottom));
lineOccluders[2] = new LineOccluder(new Vector2(Occluder.Right, Occluder.Bottom), new Vector2(Occluder.Left, Occluder.Bottom));
lineOccluders[3] = new LineOccluder(new Vector2(Occluder.Left, Occluder.Bottom), new Vector2(Occluder.Left, Occluder.Top));
}
public LineOccluder[] ConvertToLineOccluders()
{
Rectangle Occluder = SR.Sprite.DynamicScaledRect();
lineOccluders[0] = new LineOccluder(new Vector2(Occluder.Left, Occluder.Top), new Vector2(Occluder.Right, Occluder.Top));
lineOccluders[1] = new LineOccluder(new Vector2(Occluder.Right, Occluder.Top), new Vector2(Occluder.Right, Occluder.Bottom));
lineOccluders[2] = new LineOccluder(new Vector2(Occluder.Right, Occluder.Bottom), new Vector2(Occluder.Left, Occluder.Bottom));
lineOccluders[3] = new LineOccluder(new Vector2(Occluder.Left, Occluder.Bottom), new Vector2(Occluder.Left, Occluder.Top));
return(lineOccluders);
}
//public void Rebuild() //Not for high level users
//{
// //LIGHTS.Add(this);
//}
public static void Init_Light()
{
if (!ShaderLoaded || LightEffect.IsDisposed)
{
PointsTriangle = new List <Vector2>();
Points = new List <Vector2>();
HandyList = new List <LineOccluder>();
RenderTarget2D = new RenderTarget2D(Setup.GraphicsDevice, Setup.graphics.PreferredBackBufferWidth, Setup.graphics.PreferredBackBufferHeight, false, Setup.GraphicsDevice.PresentationParameters.BackBufferFormat, DepthFormat.Depth24);
SceneManager.SceneTexPtr = Scene.GuiRenderer.BindTexture(RenderTarget2D);
//LIGHTS = new List<Light>();
LightEffect = Setup.Content.Load <Effect>("LightTest");
ShaderLoaded = true;
ShadowMap = new RenderTarget2D(Setup.GraphicsDevice, Setup.graphics.PreferredBackBufferWidth, Setup.graphics.PreferredBackBufferHeight, false, Setup.GraphicsDevice.PresentationParameters.BackBufferFormat, DepthFormat.None); //Depth is not needed
BorderOccluders = new LineOccluder[4];
BorderOccluders[0] = new LineOccluder();
BorderOccluders[1] = new LineOccluder();
BorderOccluders[2] = new LineOccluder();
BorderOccluders[3] = new LineOccluder();
ShadowMap_param = LightEffect.Parameters["ShadowMap"];
DirectionalIntensity_param = LightEffect.Parameters["DirectionalIntensity"];
LightCount_param = LightEffect.Parameters["LightCount"];
AngularRadius_param = LightEffect.Parameters["AngularRadius"];
X_Bias_param = LightEffect.Parameters["X_Bias"];
Y_Bias_param = LightEffect.Parameters["Y_Bias"];
YOverX_param = LightEffect.Parameters["YOverX"];
Color_param = LightEffect.Parameters["Color"];
Radius_param = LightEffect.Parameters["Radius"];
InnerRadius_param = LightEffect.Parameters["InnerRadius"];
InnerIntensity_param = LightEffect.Parameters["InnerIntensity"];
Attenuation_param = LightEffect.Parameters["Attenuation"];
CastShadows_param = LightEffect.Parameters["CastShadows"];
CastShadow_param = LightEffect.Parameters["CastShadow"];
ShadowConstant_param = LightEffect.Parameters["ShadowConstant"];
//CameraPosNorm_param = LightEffect.Parameters["CameraPosNorm"];
}
//LIGHTS.Add(this);
YOVERX = (float)Setup.graphics.PreferredBackBufferHeight / Setup.graphics.PreferredBackBufferWidth;
if (RenderTarget2D == null)
{
RenderTarget2D = new RenderTarget2D(Setup.GraphicsDevice, Setup.graphics.PreferredBackBufferWidth, Setup.graphics.PreferredBackBufferHeight, false, Setup.GraphicsDevice.PresentationParameters.BackBufferFormat, DepthFormat.Depth24);
SceneManager.SceneTexPtr = Scene.GuiRenderer.BindTexture(RenderTarget2D);
}
Setup.GraphicsDevice.SetRenderTarget(RenderTarget2D); //Render Target
}
