sparksl_RadialProgressBar.sca

using namespace std;
// @param[default=#00EFFFF0] progressColor
// @param[default=#FF2FFFF0] timeSpentColor
// @param[default=5.0,min=0.0,max=60.0] Duration
void mainImage(vec4 progressColor, vec4 timeSpentColor,float Duration,out vec4 fragColor )
{
    float Time = getTime();
    vec2 Resolution = getRenderTargetSize();
    vec2 fragCoord = fragment(getVertexTexCoord()) * Resolution;
    float dur = Duration;
    float progress = fract(Time / dur);
    
    float innerRadius = 80.0;
    float outerRadius = 120.0;
    
    float middleRadius = 0.5 * (innerRadius + outerRadius);
    float halfWidth = 0.5 * (outerRadius - innerRadius);
    
    vec2 pos = fragCoord.xy - 0.5 * Resolution.xy;
    float radius = length(pos.xy);
	
    float fr = halfWidth - abs(radius - middleRadius) + 1.0; 
    if(fr < 0.0) discard;
      fr = clamp(fr, 0.0, 1.0);
    
    float angle = degrees(atan(-pos.x, pos.y)) + 180.0; 
    float fa = radians(angle - progress * 360.0) * radius + 1.0; 
      fa = clamp(fa, 0.0, 1.0);
    
      vec4 color = vec4(0.8,0.9,1,1);
      vec4 col = mix(progressColor, timeSpentColor, fa);
    col.a *= fr;
    
    vec4 bgColor = progressColor;
    col = mix(bgColor, col, col.a);
	
	fragColor = col;
}