71 lines
2.0 KiB
GLSL
71 lines
2.0 KiB
GLSL
#ifdef GL_ES
|
|
precision mediump float;
|
|
precision mediump int;
|
|
#endif
|
|
|
|
struct widgetStateProperty {
|
|
int activate;
|
|
int stateOld;
|
|
int stateNew;
|
|
float transition;
|
|
};
|
|
|
|
uniform widgetStateProperty EW_status;
|
|
|
|
// transmit from the vertex shader
|
|
varying vec2 v_position; // interpolated position ...
|
|
varying vec2 v_propPos;
|
|
varying vec4 v_colorTansition;
|
|
varying vec4 v_colorBorder;
|
|
varying vec4 v_colorBackground;
|
|
varying vec4 v_colorInside;
|
|
|
|
// internal static define
|
|
float S_sizePadding = 3.0; // must not be NULL
|
|
float S_sizeBorder = 1.0; //==> this id for 1 px border
|
|
float S_roundedRatio = 10.0;
|
|
|
|
|
|
void main(void) {
|
|
// position form center :
|
|
vec2 ratio = EW_widgetProperty.size / 2.0;
|
|
|
|
// prevent origin moving ...
|
|
vec2 position = v_position - EW_widgetProperty.origin;
|
|
|
|
/* generate a central simetry
|
|
____ _____
|
|
\ /
|
|
\ /
|
|
\ /
|
|
-
|
|
*/
|
|
vec2 positionCenter = abs(position-ratio);
|
|
// This is a clip to remove center of the display of the widget
|
|
vec2 ratioLow = ratio - (S_roundedRatio+S_sizePadding);
|
|
vec2 circleMode = smoothstep(ratioLow, ratio, positionCenter)*(S_roundedRatio+S_sizePadding);
|
|
// Calculate the distance of the radius
|
|
float tmpDist = float(int(sqrt(dot(circleMode,circleMode))));
|
|
// Generate the internal rampe for the the imput drawing
|
|
float tmpVal = smoothstep(S_roundedRatio - S_sizeBorder*1.5,
|
|
S_roundedRatio + S_sizeBorder*1.5,
|
|
tmpDist);
|
|
// set Background
|
|
gl_FragColor = v_colorBackground;
|
|
// set foreground
|
|
gl_FragColor = gl_FragColor*tmpVal + v_colorTansition*(1.0-tmpVal);
|
|
// set border
|
|
float tmpVal2 = abs(tmpVal-0.5)*2.0;
|
|
gl_FragColor = gl_FragColor*tmpVal2 + v_colorBorder*(1.0-tmpVal2);
|
|
|
|
// prevent origin moving ...
|
|
position = v_position - EW_widgetProperty.insidePos - EW_widgetProperty.insideSize*0.5;
|
|
position = position / EW_widgetProperty.insideSize;
|
|
|
|
if (sqrt(dot(position, position)) <= 1.0) {
|
|
gl_FragColor = v_colorInside;
|
|
}
|
|
|
|
}
|
|
|