Initial commit

Rectangle.pde

@@ -0,0 +1,76 @@
+static class Rectangle {
+  final float left, top, right, bottom, width, height;
+
+  Rectangle(float top, float left, float bottom, float right) {
+    this.top = top;
+    this.left = left;
+    this.bottom = bottom;
+    this.right = right;
+    this.width = right - left;
+    this.height = bottom - top;
+  }
+
+  static Rectangle tlbr(float top, float left, float bottom, float right) {
+    return new Rectangle(top, left, bottom, right);
+  }
+
+  static Rectangle xywh(float left, float top, float width, float height) {
+    return new Rectangle(top, left, top + height, left + width);
+  }
+
+  float centerX() {
+    return left + width / 2F;
+  }
+
+  float centerY() {
+    return top + height / 2F;
+  }
+
+  PVector center() {
+    return new PVector(centerX(), centerY());
+  }
+
+  boolean contains(float x, float y) {
+    return x >= left && x < right && y >= top && y < bottom;
+  }
+
+  Rectangle offset(float dx, float dy) {
+    return xywh(left + dx, top + dy, width, height);
+  }
+
+  Rectangle[] splitVerticallyAt(float dx) {
+    return new Rectangle[] {
+      new Rectangle(top, left, bottom, left + dx),
+      new Rectangle(top, left + dx, bottom, right)
+    };
+  }
+
+  Rectangle[] splitHorizontallyAt(float dy) {
+    return new Rectangle[] {
+      new Rectangle(top, left, top + dy, right),
+      new Rectangle(top + dy, left, bottom, right)
+    };
+  }
+
+  Rectangle[] splitVerticallyInto(int n) {
+    var count = floor(width / n);
+    var result = new Rectangle[count];
+
+    for (var i = 0; i < count; i++) {
+      result[i] = new Rectangle(top, lerp(left, right, (float) i / n), bottom, lerp(left, right, (float) (i + 1) / n));
+    }
+
+    return result;
+  }
+
+  Rectangle[] splitHorizontallyInto(int n) {
+    var count = floor(height / n);
+    var result = new Rectangle[count];
+
+    for (var i = 0; i < count; i++) {
+      result[i] = new Rectangle(lerp(top, bottom, (float) i / n), left, lerp(top, bottom, (float) (i + 1) / n), right);
+    }
+
+    return result;
+  }
+}