109 lines
3.1 KiB
Plaintext
109 lines
3.1 KiB
Plaintext
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import hypermedia.net.*;
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int pixelSize = 4;
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int bitPerPixel = 2;
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int width=160;
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int height=144;
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int windowWidth=width*pixelSize;
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int windowHeight=height*pixelSize;
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UDP udp;
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byte[] emptyByteArray = new byte[0];
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byte receivedData[]=emptyByteArray;
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byte imagebuffer[][]=new byte[width][height];
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PImage led[]=new PImage[(int)pow(2,bitPerPixel)];
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void settings() {
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size(width*pixelSize, height*pixelSize,P2D);
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}
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void setup() {
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//Setup Graphics
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frameRate(30);
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noSmooth();
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background(0);
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noStroke();
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//UDP
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udp = new UDP( this, 2323 );
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//udp.log( true ); // <-- printout the connection activit
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udp.listen( true );
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//Precompute LED Images
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for (byte b=0;b<led.length;b++){
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led[b] = createImage(pixelSize, pixelSize, RGB);
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led[b].loadPixels();
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for (int px = 0; px < pixelSize; px++) {
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for (int py = 0; py < pixelSize; py++) {
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float distanceFromCenter=sqrt( pow(px-pixelSize/2,2) + pow(py-pixelSize/2,2) ) / sqrt(pow(pixelSize/2,2) + pow(pixelSize/2,2));
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int colorR=255/3*b;
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int colorG=127/3*b;
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int colorB=0;
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float brightnessMultiplier=map(distanceFromCenter, 0.4, 1/sqrt(2), 1.0, 0.0);
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if(brightnessMultiplier<0){
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brightnessMultiplier=0;
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}else if(brightnessMultiplier>1){
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brightnessMultiplier=1;
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}
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colorR*=brightnessMultiplier;
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colorG*=brightnessMultiplier;
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colorB*=brightnessMultiplier;
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led[b].pixels[py*pixelSize+px] = color(colorR,colorG,colorB);
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}
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}
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led[b].updatePixels();
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}
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}
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//draw event handler
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void draw() {
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//map byte data to imagebuffer
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if (receivedData.length > 0){ //new data?
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byte[] cachedData=receivedData; //cache data to free array for new data
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receivedData = emptyByteArray;
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for (int i=0;i<cachedData.length;i++){
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for (int shift=0;shift<(8/bitPerPixel);shift++){ //bitshifts because a byte can contain multiple pixels
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int pixelnumber=i*(8/bitPerPixel)+shift; //absolute pixelnumber
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int x=pixelnumber%width;
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int y=pixelnumber/width;
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int value= (cachedData[i]&( 3 <<(shift*bitPerPixel))) >> (shift*bitPerPixel); //mask relevant bits for current pixel
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imagebuffer[x][y]=(byte)value; //write pixel value to image buffer
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}
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}
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}
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clear(); //clear screen
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//int timeA=millis();
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//Draw leds
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for (int x = 0; x < imagebuffer.length; x++){
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for (int y = 0; y < imagebuffer[x].length; y++){
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byte pixel=imagebuffer[x][y];
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//fill(255/3*pixel,127/3*pixel,0); //set pixel color
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//ellipse(x*pixelSize+pixelSize/2, y*pixelSize+pixelSize/2, pixelSize, pixelSize); //Very slow
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//rect(x*pixelSize, y*pixelSize, pixelSize, pixelSize); //works fast enough
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image(led[pixel], x*pixelSize, y*pixelSize); //draw precomputed led image, as fast as rect but looks nicer
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}
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}
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//int timeB=millis()-timeA;
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//println("Time="+(timeB));
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}
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//udp receive event handler
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void receive( byte[] data, String ip, int port ) {
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receivedData=data; //received data to buffer
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}
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