/***************************************************************************************/
/*! \file Crosshair.usf
*
* Adds a crosshair to APBr
*
*
* Owned by dreamss, some code stolen from tobii and spec
*
* variable crosshair size added by Kimiko
* and pretty much every change after that ... DYNAMIC_COLOR, internal color options, and making it work on rtw/1.9.1 shaders
* fuckshadercoding
*
* Thanks to blizzy for the alternative crosshairs ENABLE_CROSSHAIR_DOT_2 ENABLE_CROSSHAIR_CIRCLE ENABLE_CROSSHAIR_CROSS
*
*
*
* Usage:
*  Add '#include "Crosshair.usf"' to  APBUberPostProcessBlendPixelShader.usf before the bottom closing "}".
*   view the included APBUberPostProcessBlendPixelShader.usf if you have questions
*
* DONT FORGET TO EDIT SCREEN_SIZE_X and SCREEN_SIZE_Y
*
* IF THE GAME CRASHES CROSSHAIR_SIZE IS WAY TO BIG!
****************************************************************************************/


#define ENABLE_CROSSHAIR 1
#define ENABLE_CROSSHAIR_DOT_1 0
#define ENABLE_CROSSHAIR_DOT_2 0
#define ENABLE_CROSSHAIR_CIRCLE 0
#define ENABLE_CROSSHAIR_CROSS 0
#define ENABLE_CROSSHAIR_CHEVRON 1

#define SCREEN_SIZE_X 1920
#define SCREEN_SIZE_Y 1080

#define CROSSHAIR_DOT_1_SIZE .8
#define IN_CROSSHAIR_DOT_1_COLOR float4( 0, 0, 0, 1)
#define IN_CROSSHAIR_DOT_1_DYNAMIC_COLOR 1
#define OUT_CROSSHAIR_DOT_1_COLOR float4( 255, 0, 0, 1)
#define OUT_CROSSHAIR_DOT_1_DYNAMIC_COLOR 0


#define CROSSHAIR_DOT_2_COLOR float4(0.0, 0.0, 0.0, 0.1)


#define CROSSHAIR_CIRCLE_COLOR float4(255, 0, 0, 1.0)
#define CROSSHAIR_CIRCLE_RADIOUS  .03


#define CROSSHAIR_CROSS_COLOR float4(1.0, 1.0, 1.0, 1.0)
#define CROSSHAIR_CROSS_SIZE .005

#define CROSSHAIR_CHEVRON_COLOR float4(1.0, 0, 0, 1.0)
#define CROSSHAIR_CHEVRON_SIZE_A .01
#define CROSSHAIR_CHEVRON_SIZE_B .001

//I officially give the fuck up. Set this to SCREEN_SIZE_Y / SCREEN_SIZE_X manually, it refuses to work when calculated.
#define chevronaspectRatio .5625






// if someone figures out how to make this work let me know - it does not seem to make a difference
#define IN_CROSSHAIR_ALPHA 1
#define OUT_CROSSHAIR_ALPHA 1




{
#if ENABLE_CROSSHAIR
#define aspectRatio SCREEN_SIZE_X/SCREEN_SIZE_Y


#if ENABLE_CROSSHAIR_CIRCLE
        float newX = SceneUV.x * aspectRatio;
        float centerX = 0.5 * aspectRatio;
        float newY = SceneUV.y;
        float centerY = 0.5;
        float cDis;

        cDis = sqrt(pow(newX - centerX, 2) + pow(newY - centerY, 2));

        if (cDis >= CROSSHAIR_CIRCLE_RADIOUS && cDis <= (CROSSHAIR_CIRCLE_RADIOUS+ 0.002f))
        {
            OutColor = CROSSHAIR_CIRCLE_COLOR;
        }
#endif

#if ENABLE_CROSSHAIR_CROSS
            if (SceneUV.x >= 0.5 - CROSSHAIR_CROSS_SIZE && SceneUV.x <= 0.5 + CROSSHAIR_CROSS_SIZE && SceneUV.y >= 0.499 && SceneUV.y <= 0.501)
            {
                OutColor =  CROSSHAIR_CROSS_COLOR;
            }
            else if (SceneUV.x >= 0.4995 && SceneUV.x <= 0.5005 && SceneUV.y >= 0.5 - (CROSSHAIR_CROSS_SIZE * aspectRatio) && SceneUV.y <= 0.5 + (CROSSHAIR_CROSS_SIZE * aspectRatio))
            {
                OutColor =  CROSSHAIR_CROSS_COLOR;
            }
#endif

#if ENABLE_CROSSHAIR_CHEVRON // CROSSHAIR_CHEVRON_SIZE

            // seriously, shoot me

            //this works still...
            //if (SceneUV.x >= 0.5 - CROSSHAIR_CHEVRON_SIZE_A && SceneUV.x <= 0.5 + CROSSHAIR_CHEVRON_SIZE_A && SceneUV.x >= SceneUV.y - CROSSHAIR_CHEVRON_SIZE_B && SceneUV.x <= SceneUV.y + CROSSHAIR_CHEVRON_SIZE_B && SceneUV.y >= 0.5)

            //Static aspect ratio 16:9
            //if (SceneUV.x >= 0.5 - CROSSHAIR_CHEVRON_SIZE_A && SceneUV.x <= 0.5 + CROSSHAIR_CHEVRON_SIZE_A && SceneUV.x >= .5625 * SceneUV.y + ( 1 - .5625 ) / 2 - CROSSHAIR_CHEVRON_SIZE_B && SceneUV.x <= .5625 * SceneUV.y + ( 1 - .5625 ) / 2 + CROSSHAIR_CHEVRON_SIZE_B && SceneUV.y >= 0.5)
            if (SceneUV.x >= 0.5 - CROSSHAIR_CHEVRON_SIZE_A && SceneUV.x <= 0.5 + CROSSHAIR_CHEVRON_SIZE_A && SceneUV.x >= chevronaspectRatio * SceneUV.y + ( 1 - chevronaspectRatio ) / 2 - CROSSHAIR_CHEVRON_SIZE_B && SceneUV.x <= chevronaspectRatio * SceneUV.y + ( 1 - chevronaspectRatio ) / 2 + CROSSHAIR_CHEVRON_SIZE_B && SceneUV.y >= 0.5)
            {
                OutColor =  CROSSHAIR_CHEVRON_COLOR;
            }
            //static aspect ratio 16:9
            //else if (SceneUV.x >= 0.5 - CROSSHAIR_CHEVRON_SIZE_A && SceneUV.x <= 0.5 + CROSSHAIR_CHEVRON_SIZE_A && SceneUV.x >= 1 - .5625 * SceneUV.y - ( 1 - .5625 ) / 2 - CROSSHAIR_CHEVRON_SIZE_B && SceneUV.x <= 1 - .5625 * SceneUV.y - ( 1 - .5625 ) / 2 + CROSSHAIR_CHEVRON_SIZE_B && SceneUV.y >= 0.5)
            else if (SceneUV.x >= 0.5 - CROSSHAIR_CHEVRON_SIZE_A && SceneUV.x <= 0.5 + CROSSHAIR_CHEVRON_SIZE_A && SceneUV.x >= 1 - chevronaspectRatio * SceneUV.y - ( 1 - chevronaspectRatio ) / 2 - CROSSHAIR_CHEVRON_SIZE_B && SceneUV.x <= 1 - chevronaspectRatio * SceneUV.y - ( 1 - chevronaspectRatio ) / 2 + CROSSHAIR_CHEVRON_SIZE_B && SceneUV.y >= 0.5)
            {
                OutColor =  CROSSHAIR_CHEVRON_COLOR;
            }
#endif

#if ENABLE_CROSSHAIR_DOT_2
        if (SceneUV.x >= 0.498 && SceneUV.x <= 0.502 && SceneUV.y >= 0.498 && SceneUV.y <= 0.502)
        {
            OutColor = CROSSHAIR_DOT_2_COLOR;
        }
#endif



 #if ENABLE_CROSSHAIR_DOT_1
        float2 ScreenSize = float2( CROSSHAIR_DOT_1_SIZE / SCREEN_SIZE_X , CROSSHAIR_DOT_1_SIZE / SCREEN_SIZE_Y );

       if(SceneUV.x >= 0.5 - ScreenSize.x && SceneUV.x <= 0.5 + ScreenSize.x && SceneUV.y >= 0.5 - ScreenSize.y && SceneUV.y <= 0.5 + ScreenSize.y)
        {
            #if IN_CROSSHAIR_DOT_1_DYNAMIC_COLOR
                OutColor = 1 - OutColor;
              OutColor.a = IN_CROSSHAIR_ALPHA;
            #else
             OutColor = IN_CROSSHAIR_DOT_1_COLOR ;
            #endif // IN_CROSSHAIR_DOT_1_DYNAMIC_COLOR
        }
        else if (SceneUV.x >= 0.5 - ScreenSize.x * 2 && SceneUV.x <= 0.5 + ScreenSize.x * 2 && SceneUV.y >= 0.5 - ScreenSize.y * 2 && SceneUV.y <= 0.5 + ScreenSize.y * 2 )
        {
            #if OUT_CROSSHAIR_DOT_1_DYNAMIC_COLOR
                OutColor = 1 - OutColor;
              OutColor.a = OUT_CROSSHAIR_ALPHA;
            #else
            OutColor =  OUT_CROSSHAIR_DOT_1_COLOR;
        #endif // OUT_CROSSHAIR_DOT_1_DYNAMIC_COLOR
        }
 #endif //ENABLE_CROSSHAIR_DOT_1

#endif // ENABLE_CROSSHAIR
}