Reaper JSFX gfx_arc issue

gistfile1.txt

desc: Cicle arc issue

slider1:180<0,180,1>Spread (mouse)

in_pin:L
in_pin:R

out_pin:L
out_pin:R

/**********************************************************
Updated slider value:
**********************************************************/
@slider

mAzimuth = 0.5 * slider1 * $pi / 180.;
mCosAzi  = cos(mAzimuth);
mSinAzi  = sin(mAzimuth);


/**********************************************************
Custom graphic interface
**********************************************************/
@gfx 500 500

gCenterX = gfx_w  * 0.5;
gCenterY = gfx_h * 0.5;
gCenterX < gCenterY ? gRadius = gCenterX : gRadius = gCenterY;
gRadius = gRadius - 10;
gInverseRadius = 1. / gRadius;

mPosX = gCenterX;
mPosY = gCenterY - 2 * gRadius * mAzimuth / $pi;

gfx_a = 1.;
gfx_r = 1.;
gfx_g = 1.;
gfx_b = 1.;
  
// Draw arc indicating spread
gfx_arc(gCenterX, gCenterY, gRadius, mAzimuth, -mAzimuth, 1);
gfx_line(gCenterX, gCenterY, gCenterX-mSinAzi*gRadius, gCenterY-mCosAzi*gRadius, 1);
gfx_line(gCenterX, gCenterY, gCenterX+mSinAzi*gRadius, gCenterY-mCosAzi*gRadius, 1);


/**********************************************************
Calculate audio sample
**********************************************************/
@sample

// Just pass through