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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,33 @@ | ||
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| void draw() { | ||
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| currentVideo = getVideo([[videoNum]]).draw(); | ||
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| for (int i = 0; i < [[iterations]]; i++) { | ||
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| if (random() < [[mixRatio]]) { | ||
| targetImage = currentVideo; | ||
| } else { | ||
| targetImage = originalImage; | ||
| } | ||
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| for (int i = 0; i < imageWidth; i++) { | ||
| for (int j = 0; j < imageHeight; j++) { | ||
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| int randX = random(0, imageWidth); | ||
| int randY = random(0, imageHeight); | ||
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| // randomly swap a pixel | ||
| sourceImageAfterSwap = sourceImage.swapPixels(i,j, randX, randY); | ||
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| if (distanceToOriginal(sourceImageAfterSwap) < | ||
| distanceToOriginal(sourceImage)) { | ||
| sourceImage = sourceImageAfterSwap; | ||
| } | ||
| } | ||
| } | ||
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| } | ||
| sourceImage.draw(); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,195 @@ | ||
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| #include "yingKnowlton.h" | ||
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| void yingKnowlton::setup(){ | ||
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| originalImage.load("scenes/yingKnowlton/sfpc-final_640.png"); | ||
| originalImage.setImageType(OF_IMAGE_COLOR); | ||
| sourceImage.load("scenes/yingKnowlton/sfpc-final_640.png"); | ||
| sourceImage.setImageType(OF_IMAGE_COLOR); | ||
| targetScores = NULL; | ||
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| ofBackground(0); | ||
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| res = 4; | ||
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| // note: pulled from @sfpc_nyc instagram feed | ||
| directory = ofDirectory("scenes/yingKnowlton/videos/"); | ||
| directory.listDir(); | ||
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| playVideo(0); | ||
| center.set(dimensions.width/2, dimensions.height/2); | ||
| screenScale = dimensions.width/vidPlayer.getWidth(); | ||
| screenScale *= 1.01; // MULTIPLY HERE TO MAKE EDGES BLEED PAST THE SCREEN | ||
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| parameters.add(videoNum.set("videoNum", 0, 0, directory.size())); | ||
| parameters.add(iterations.set("iterations", 5000, 10, 10000)); | ||
| parameters.add(mixRatio.set("mixRatio", 1, 0, 1)); | ||
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| setAuthor("Ying Quan Tan"); | ||
| setOriginalArtist("Ken Knowlton"); | ||
| loadCode("scenes/yingKnowlton/exampleCode.cpp"); | ||
| } | ||
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| void yingKnowlton::update(){ | ||
| vidPlayer.update(); | ||
| if (vidPlayer.isPlaying() && vidPlayer.getTotalNumFrames() - vidPlayer.getCurrentFrame() < 30) { | ||
| videoNum = ++videoNum % directory.size(); | ||
| playVideo(videoNum); | ||
| } | ||
| if (current != videoNum) { | ||
| current = videoNum; | ||
| playVideo(videoNum); | ||
| } | ||
| } | ||
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| void yingKnowlton::draw(){ | ||
| ofPushMatrix(); | ||
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| int vidWidth = vidPlayer.getWidth() * screenScale; | ||
| int vidHeight = vidPlayer.getHeight() * screenScale; | ||
| // center the video | ||
| ofTranslate(center - ofPoint(vidWidth, vidHeight)/2); | ||
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| // make sure video scales to screen. | ||
| ofScale(screenScale, screenScale); | ||
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| if ((vidPlayer.isPlaying() && sourceImage.isAllocated())) { | ||
| unsigned char * vidPixels = vidPlayer.getPixels().getData(); | ||
| unsigned char * originalPixels = originalImage.getPixels().getData(); | ||
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| ofImage &image = sourceImage; | ||
| int cols = image.getWidth() / res; | ||
| int rows = image.getHeight() / res; | ||
| int positions = cols * rows; | ||
| int bytesPerPixel = 3; | ||
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| for (int it = 0; it < iterations; it++) { | ||
| unsigned char * targetPointer; | ||
| if (ofRandom(1.0) < mixRatio) { | ||
| targetPointer = vidPixels; | ||
| } else { | ||
| targetPointer = originalPixels; | ||
| } | ||
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| int i = floor(ofRandom(cols)) * res; | ||
| int j = floor(ofRandom(rows)) * res; | ||
| float previousTargetScore = targetScore; | ||
| int index = (j * image.getWidth() + i) * bytesPerPixel; | ||
| int x = i / res; | ||
| int y = j / res; | ||
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| int randX = floor(ofRandom(cols)) * res; | ||
| int randY = floor(ofRandom(rows)) * res; | ||
| int randIndex = (randY * image.getWidth() + randX) * bytesPerPixel; | ||
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| unsigned char * from = getSubImage(image, i, j, res); | ||
| unsigned char * to = getSubImage(image, randX, randY, res); | ||
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| // calculate costs | ||
| float fromScore = distance(from, targetPointer + index); | ||
| float toScore = distance(to, targetPointer + randIndex); | ||
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| float afterSwapFromScore = distance(to, targetPointer + index); | ||
| float afterSwapToScore = distance(from, targetPointer + randIndex); | ||
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| if (afterSwapFromScore + afterSwapToScore < fromScore + toScore) { | ||
| // perform swap | ||
| setSubImage(image, i, j, res, to); | ||
| setSubImage(image, randX, randY, res, from); | ||
| } | ||
| delete[] from; | ||
| delete[] to; | ||
| } | ||
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| image.update(); | ||
| image.draw(0, 0); | ||
| } | ||
| ofPopMatrix(); | ||
| } | ||
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| void yingKnowlton::playVideo(int index) { | ||
| vidPlayer.load(directory.getPath(index)); | ||
| int cols = vidPlayer.getWidth() / res; | ||
| int rows = vidPlayer.getHeight() / res; | ||
| if (targetScores == NULL) { | ||
| targetScores = new unsigned char[cols * rows]; | ||
| } | ||
| memset(targetScores,0,cols * rows); | ||
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| vidPlayer.setVolume(0); | ||
| vidPlayer.play(); | ||
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| } | ||
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| unsigned char * yingKnowlton::getSubImage(ofImage &image, | ||
| int _x, | ||
| int _y, | ||
| int maskSize) { | ||
| int bytesPerPixel = 3; | ||
| unsigned char * subImage = new unsigned char[maskSize * maskSize * bytesPerPixel]; | ||
| unsigned char * data = image.getPixels().getData(); | ||
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| int c = 0; | ||
| for (int y = _y; y < _y + maskSize; y++) { | ||
| for (int x = _x; x < _x + maskSize; x++) { | ||
| int idx = y * image.getWidth()*bytesPerPixel + x*bytesPerPixel; | ||
| for (int i = 0; i < bytesPerPixel; i++) { | ||
| subImage[c + i] = data[idx + i]; | ||
| } | ||
| c += bytesPerPixel; | ||
| } | ||
| } | ||
| return subImage; | ||
| } | ||
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| void yingKnowlton::setSubImage(ofImage &image, | ||
| int _x, | ||
| int _y, | ||
| int maskSize, | ||
| unsigned char * subImage) { | ||
| int bytesPerPixel = 3; | ||
| unsigned char * data = image.getPixels().getData(); | ||
| int c = 0; | ||
| for (int y = _y; y < _y + maskSize; y++) { | ||
| for (int x = _x; x < _x + maskSize; x++) { | ||
| int idx = (y * image.getWidth() + x) * bytesPerPixel; | ||
| for (int i = 0; i < bytesPerPixel; i++) { | ||
| data[idx + i] = subImage[c + i]; | ||
| } | ||
| c += bytesPerPixel; | ||
| } | ||
| } | ||
| } | ||
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| float yingKnowlton::distance(unsigned char * pixel1, | ||
| unsigned char * pixel2) { | ||
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| float r1 = pixel1[0]; | ||
| float g1 = pixel1[1]; | ||
| float b1 = pixel1[2]; | ||
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| float r2 = pixel2[0]; | ||
| float g2 = pixel2[1]; | ||
| float b2 = pixel2[2]; | ||
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| float dist = abs(r1 - r2) + abs(g1 - g2) + abs(b1 - b2); | ||
| dist /= (255*3); | ||
| return dist; | ||
| } | ||
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| float yingKnowlton::getTargetScore() { | ||
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| float total = 0; | ||
| int cols = sourceImage.getWidth() / res; | ||
| int rows = sourceImage.getHeight() / res; | ||
| for (int i = 0; i < cols; i++) { | ||
| for (int j = 0; j < rows; j++) { | ||
| int score = targetScores[j * cols + i]; | ||
| total += score; | ||
| } | ||
| } | ||
| return total; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| #pragma once | ||
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| #include "ofMain.h" | ||
| #include "baseScene.h" | ||
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| class yingKnowlton : public baseScene { | ||
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| public: | ||
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| void setup(); | ||
| void update(); | ||
| void draw(); | ||
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| int res; | ||
| ofVideoPlayer vidPlayer; | ||
| ofImage sourceImage; | ||
| ofImage originalImage; | ||
| ofImage targetImage; | ||
| ofPoint center; | ||
| float screenScale; | ||
| unsigned char * targetScores; | ||
| float targetScore; | ||
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| unsigned char * getSubImage(ofImage &image, | ||
| int x, | ||
| int y, | ||
| int maskSize); | ||
| void setSubImage(ofImage &image, | ||
| int x, | ||
| int y, | ||
| int maskSize, | ||
| unsigned char * subImage); | ||
| float distance(unsigned char * pixel1, | ||
| unsigned char * pixel2); | ||
| float getTargetScore(); | ||
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| void playVideo(int index); | ||
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| int current; | ||
| ofParameter < float > mixRatio; | ||
| ofParameter < int > videoNum; | ||
| ofParameter < int > iterations; | ||
| ofDirectory directory; | ||
| }; |