Data commit

Task/Draw-a-sphere/Processing/draw-a-sphere-1.processing

@@ -0,0 +1,13 @@
+void setup() {
+  size(500, 500, P3D);
+}
+void draw() {
+  background(192);
+  translate(width/2, height/2);
+  // optional color and lighting style
+  stroke(200);
+  fill(255);
+  lights();
+  // draw sphere
+  sphere(200);
+}

Task/Draw-a-sphere/Processing/draw-a-sphere-2.processing

@@ -0,0 +1,45 @@
+float rotX, rotY;
+
+PVector[][] sphere;
+int detail = 50;
+
+void setup() {
+  size(600, 600, P3D);
+  background(50, 50, 200);
+  fill(255, 0, 200);
+  stroke(0, 40);
+  sphere = new PVector[detail+1][detail+1];
+}
+
+void draw() {
+  pointLight(255, 255, 255, -width, -height, 2*height);
+  translate(width/2, height/2);
+  rotateX(rotX);
+  rotateY(rotY);
+  float r = 200;
+  for (int i = 0; i <= detail; i++) {
+    float rows = map(i, 0, detail, 0, PI);
+    for (int j = 0; j <= detail; j++) {
+      float columns = map(j, 0, detail, 0, TWO_PI);
+      float x = r * sin(rows) * cos(columns);
+      float y = r * sin(rows) * sin(columns);
+      float z = r * cos(rows);
+      sphere[i][j] = new PVector(x, y, z);
+    }
+  }
+  for (int i = 0; i < detail; i++) {
+    beginShape(TRIANGLE_STRIP);
+    for (int j = 0; j <= detail; j++) {
+      PVector v1 = sphere[i][j];
+      vertex(v1.x, v1.y, v1.z);
+      PVector v2 = sphere[i+1][j];
+      vertex(v2.x, v2.y, v2.z);
+    }
+    endShape();
+  }
+}
+
+void mouseDragged() {
+  rotY -= (mouseX - pmouseX) * 0.01;
+  rotX -= (mouseY - pmouseY) * 0.01;
+}