moving the OpenGL examples to the core

2026-06-16 04:26:26 +02:00 · 2012-07-20 20:24:58 +00:00
parent b30328bb66
commit 40ecd562e3
133 changed files with 0 additions and 0 deletions
@@ -0,0 +1,80 @@
+// Blending, by Andres Colubri
+// Images can be blended using one of the 10 blending modes 
+// available in P3D.   
+// Images by Kevin Bjorke.
+
+PImage pic1, pic2;
+int selMode = REPLACE;
+String name = "replace";
+int picAlpha = 255;
+
+void setup() {
+  size(800, 480, P3D);
+  
+  PFont font = createFont(PFont.list()[0], 20);
+  textFont(font, 20);    
+  
+  pic1 = loadImage("bjorke1.jpg");
+  pic2 = loadImage("bjorke2.jpg"); 
+}
+
+void draw() {
+  background(0);
+  
+  tint(255, 255);
+  image(pic1, 0, 0, pic1.width, pic1.height);
+  
+  blendMode(selMode);  
+  tint(255, picAlpha);
+  image(pic2, 0, 0, pic2.width, pic2.height);
+    
+  blendMode(REPLACE);    
+  fill(200, 50, 50);
+  rect(0, height - 50, map(picAlpha, 0, 255, 0, width), 50);
+  fill(255);
+
+  text("Selected blend mode: " + name + ". Click to move to next", 10, pic1.height + 30);
+  text("Drag this bar to change alpha of image", 10, height - 18);
+}
+
+void mousePressed() {
+  if (height - 50 < mouseY) return;
+  
+  if (selMode == REPLACE) { 
+    selMode = BLEND;
+    name = "blend";
+  } else if (selMode == BLEND) { 
+    selMode = ADD;
+    name = "add";
+  } else if (selMode == ADD) { 
+    selMode = SUBTRACT;
+    name = "subtract";
+  } else if (selMode == SUBTRACT) { 
+    selMode = LIGHTEST;
+    name = "lightest";
+  } else if (selMode == LIGHTEST) { 
+    selMode = DARKEST;
+    name = "darkest";
+  } else if (selMode == DARKEST) { 
+    selMode = DIFFERENCE;
+    name = "difference";
+  } else if (selMode == DIFFERENCE) { 
+    selMode = EXCLUSION;  
+    name = "exclusion";
+  } else if (selMode == EXCLUSION) { 
+    selMode = MULTIPLY;  
+    name = "multiply";
+  } else if (selMode == MULTIPLY) { 
+    selMode = SCREEN;
+    name = "screen";
+  } else if (selMode == SCREEN) { 
+    selMode = REPLACE;
+    name = "replace";
+  }
+}
+
+void mouseDragged() {
+  if (height - 50 < mouseY) {
+    picAlpha = int(map(mouseX, 0, width, 0, 255));
+  }
+}