public Rectangle(float x1, float y1, float x2, float y2) {
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float xmin = min(x1,x2); xmax = max(x1,x2);
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float ymin = min(y1,y2); ymax = max(y1.y2);
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w = xmax - xmin;
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h = ymax - ymin;
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p = new Point(xmin,ymin); }
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public Rectangle() {
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w = h = 1.0;
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p = new Point(); }
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public void inverse() {
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float tmp = p.x; p.x = p.y; p.y tmp; }
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public void move(float dx, float dy) {
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p.move(dx,dy); }
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public void move() {p.move();}
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