/*{
"CATEGORIES": [
"Stylize"
],
"CREDIT": "VIDVOX",
"DESCRIPTION": "Stretches the edges out a region of the video",
"INPUTS": [
{
"NAME": "inputImage",
"TYPE": "image"
},
{
"DEFAULT": 0.25,
"IDENTITY": 0,
"LABEL": "Left Edge",
"MAX": 1,
"MIN": 0,
"NAME": "leftEdge",
"TYPE": "float"
},
{
"DEFAULT": 0.75,
"IDENTITY": 1,
"LABEL": "Right Edge",
"MAX": 1,
"MIN": 0,
"NAME": "rightEdge",
"TYPE": "float"
},
{
"DEFAULT": 0.25,
"IDENTITY": 0,
"LABEL": "Bottom Edge",
"MAX": 1,
"MIN": 0,
"NAME": "bottomEdge",
"TYPE": "float"
},
{
"DEFAULT": 0.75,
"IDENTITY": 1,
"LABEL": "Top Edge",
"MAX": 1,
"MIN": 0,
"NAME": "topEdge",
"TYPE": "float"
},
{
"DEFAULT": true,
"LABEL": "Horizontal Bleed",
"NAME": "doHorizontal",
"TYPE": "bool"
},
{
"DEFAULT": true,
"LABEL": "Vertical Bleed",
"NAME": "doVertical",
"TYPE": "bool"
},
{
"DEFAULT": true,
"LABEL": "Inside Bleed",
"NAME": "insideBleed",
"TYPE": "bool"
},
{
"DEFAULT": true,
"LABEL": "Outside Bleed",
"NAME": "outsideBleed",
"TYPE": "bool"
}
],
"ISFVSN": "2"
}
*/
void main() {
vec4 outputPixelColor;
float realLeftEdge = (leftEdge < rightEdge) ? leftEdge : rightEdge;
float realRightEdge = (leftEdge > rightEdge) ? leftEdge : rightEdge;
float realBottomEdge = (bottomEdge < topEdge) ? bottomEdge : topEdge;
float realTopEdge = (bottomEdge > topEdge) ? bottomEdge : topEdge;
vec2 sampleCoord = isf_FragNormCoord.xy;
bool insideBox = false;
vec2 region = vec2(0.0,0.0);
if (sampleCoord.x < realLeftEdge) {
region.x = 0.0;
}
else if (sampleCoord.x > realRightEdge) {
region.x = 2.0;
}
else {
region.x = 1.0;
}
if (sampleCoord.y < realBottomEdge) {
region.y = 0.0;
}
else if (sampleCoord.y > realTopEdge) {
region.y = 2.0;
}
else {
region.y = 1.0;
}
if ((region.x == 1.0) && (region.y == 1.0) && (insideBleed == true)) {
insideBox = true;
}
else if (outsideBleed == true) {
// if we are in the bottom left...
if ((region.x == 0.0) && (region.y == 0.0)) {
if ((doHorizontal) && (doVertical)) {
insideBox = true;
realRightEdge = realLeftEdge;
realLeftEdge = 0.0;
realTopEdge = realBottomEdge;
realBottomEdge = 0.0;
}
}
else if ((region.x == 1.0) && (region.y == 0.0)) {
if ((doHorizontal) && (doVertical)) {
insideBox = true;
realTopEdge = realBottomEdge;
realBottomEdge = 0.0;
}
else if (doVertical) {
insideBox = true;
realTopEdge = realBottomEdge;
realBottomEdge = 0.0;
}
}
else if ((region.x == 2.0) && (region.y == 0.0)) {
if ((doHorizontal) && (doVertical)) {
insideBox = true;
realLeftEdge = realRightEdge;
realRightEdge = 1.0;
realTopEdge = realBottomEdge;
realBottomEdge = 0.0;
}
}
else if ((region.x == 0.0) && (region.y == 1.0)) {
if (doHorizontal) {
insideBox = true;
realRightEdge = realLeftEdge;
realLeftEdge = 0.0;
}
}
else if ((region.x == 2.0) && (region.y == 1.0)) {
if (doHorizontal) {
insideBox = true;
realLeftEdge = realRightEdge;
realRightEdge = 1.0;
}
}
else if ((region.x == 0.0) && (region.y == 2.0)) {
if ((doHorizontal) && (doVertical)) {
insideBox = true;
realRightEdge = realLeftEdge;
realLeftEdge = 0.0;
realBottomEdge = realTopEdge;
realTopEdge = 1.0;
}
}
else if ((region.x == 1.0) && (region.y == 2.0)) {
if (doVertical) {
insideBox = true;
realBottomEdge = realTopEdge;
realTopEdge = 1.0;
}
}
else if ((region.x == 2.0) && (region.y == 2.0)) {
if ((doHorizontal) && (doVertical)) {
insideBox = true;
realLeftEdge = realRightEdge;
realRightEdge = 1.0;
realBottomEdge = realTopEdge;
realTopEdge = 1.0;
}
}
}
// if we're doing inside bleed
if (insideBox) {
// how close are we to each edge?
if ((doHorizontal) && (doVertical)) {
float leftDistance = sampleCoord.x - realLeftEdge;
float rightDistance = realRightEdge - sampleCoord.x;
float bottomDistance = sampleCoord.y - realBottomEdge;
float topDistance = realTopEdge - sampleCoord.y;
float totalDistance = (leftDistance + rightDistance + bottomDistance + topDistance);
vec4 leftPixel = IMG_NORM_PIXEL(inputImage, vec2(realLeftEdge, sampleCoord.y));
vec4 rightPixel = IMG_NORM_PIXEL(inputImage, vec2(realRightEdge, sampleCoord.y));
vec4 bottomPixel = IMG_NORM_PIXEL(inputImage, vec2(sampleCoord.x, realBottomEdge));
vec4 topPixel = IMG_NORM_PIXEL(inputImage, vec2(sampleCoord.x, realTopEdge));
outputPixelColor = (rightDistance * leftPixel + leftDistance * rightPixel + topDistance * bottomPixel + bottomDistance * topPixel) / totalDistance;
}
else if (doHorizontal) {
float leftDistance = sampleCoord.x - realLeftEdge;
float rightDistance = realRightEdge - sampleCoord.x;
float totalDistance = leftDistance + rightDistance;
vec4 leftPixel = IMG_NORM_PIXEL(inputImage, vec2(realLeftEdge, sampleCoord.y));
vec4 rightPixel = IMG_NORM_PIXEL(inputImage, vec2(realRightEdge, sampleCoord.y));
outputPixelColor = (rightDistance * leftPixel + leftDistance * rightPixel) / totalDistance;
}
else if (doVertical) {
float bottomDistance = sampleCoord.y - realBottomEdge;
float topDistance = realTopEdge - sampleCoord.y;
float totalDistance = bottomDistance + topDistance;
vec4 bottomPixel = IMG_NORM_PIXEL(inputImage, vec2(sampleCoord.x, realBottomEdge));
vec4 topPixel = IMG_NORM_PIXEL(inputImage, vec2(sampleCoord.x, realTopEdge));
outputPixelColor = (topDistance * bottomPixel + bottomDistance * topPixel) / totalDistance;
}
else {
outputPixelColor = IMG_NORM_PIXEL(inputImage, sampleCoord);
}
}
else {
outputPixelColor = IMG_NORM_PIXEL(inputImage, sampleCoord);
}
gl_FragColor = outputPixelColor;
}
