Removing Topics from SVN

2026-06-16 04:26:26 +02:00 · 2011-09-05 23:44:10 +00:00
parent b99624cdb4
commit 4fc6dcca86
219 changed files with 0 additions and 31091 deletions
@@ -1,114 +0,0 @@
-/**
- * Tunnel Demo Effect 
- * by luis2048. 
- * 
- * This effect shows a tunnel in which you fly while the tunnel 
- * rotates, seemingly in 3D. The animation of the tunnel actually 
- * isn't calculated on the fly while the animation runs, but is 
- * precalculated. These calculations are stored in two tables: 
- * one for the angle and one for the distance. For every frame, 
- * go through every pixel (x,y) and use the angle and distance 
- * tables to get which pixel of the texture it should draw at the 
- * current pixel. To look like its rotating and zooming, the values 
- * of the angle and distance tables are shifted. 
- */
-
-int x, y, radius, l;
-PGraphics tunnelEffect;
-PImage textureImg;
-
-// build lookup table
-int[][] distanceTable;
-int[][] angleTable;
-int[][] shadeTable;
-int w, h;
-
-void setup() {
-  size(640, 360);
-  
-  // Load texture 512 x 512
-  textureImg = loadImage("red_smoke.jpg");
-  textureImg.loadPixels();
-
-  // Create buffer screen
-  tunnelEffect = createGraphics(320, 200, P2D);
-  w = tunnelEffect.width;
-  h = tunnelEffect.height;
-
-  float ratio = 32.0;
-  int angle;
-  int depth;
-  int shade = 0;
-
-  // Make the tables twice as big as the screen. 
-  // The center of the buffers is now the position (w,h).
-  distanceTable= new int[2 * w][2 * h];
-  angleTable= new int[2 * w][2 * h];
-
-  for (int x = 0; x < w*2; x++)
-  {
-    for (int y = 0; y < h*2; y++)
-    {
-      depth = int(ratio * textureImg.height 
-                  / sqrt(float((x - w) * (x - w) + (y - h) * (y - h)))) ;
-      angle = int(0.5 * textureImg.width * atan2(float(y - h), 
-                  float(x - w)) / PI) ;
-
-      // The distance table contains for every pixel of the 
-      // screen, the inverse of the distance to the center of 
-      // the screen this pixel has.
-      distanceTable[x][y] = depth ;
-
-      // The angle table contains the angle of every pixel of the screen, 
-      // where the center of the screen represents the origin.
-      angleTable[x][y] = angle ;
-    }
-  }   
-}
-
-
-void draw() {
-
-  tunnelEffect.beginDraw();
-  tunnelEffect.loadPixels();
-
-  float timeDisplacement = millis() / 1000.0;
-
-  // Calculate the shift values out of the time value
-  int shiftX = int(textureImg.width * .2 * timeDisplacement+300); // speed of zoom
-  int shiftY = int(textureImg.height * .15 * timeDisplacement+300); //speed of spin
-
-  // Calculate the look values out of the time value
-  // by using sine functions, it'll alternate between 
-  // looking left/right and up/down
-  int shiftLookX = w / 2 + int(w / 4 * sin(timeDisplacement));
-  int shiftLookY = h / 2 + int(h / 4 * sin(timeDisplacement * 1.5));
-
-  for (int y = 0; y < h; y++)  {
-    for (int x = 0; x < w; x++)      {
-      
-      // Make sure that x + shiftLookX never goes outside 
-      // the dimensions of the table
-      int texture_x = constrain((distanceTable[x + shiftLookX][y + shiftLookY] 
-                                 + shiftX) % textureImg.width ,0, textureImg.width);
-      
-      int texture_y = (angleTable[x + shiftLookX][y + shiftLookY] 
-                       + shiftY) % textureImg.height;
-      
-      tunnelEffect.pixels[x+y*w] = textureImg.pixels[texture_y 
-                         * textureImg.width + texture_x];
-
-      // Test lookuptables
-      // tunnelEffect.pixels[x+y*w] = color( 0,texture_x,texture_y);
-    }
-  }
-
-  tunnelEffect.updatePixels();
-  tunnelEffect.endDraw();
-
-  // Display the results
-  image(tunnelEffect, 0, 0, width, height); 
-
-}
-
-