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41 lines
742 B
Plaintext
41 lines
742 B
Plaintext
/**
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* Constrain.
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*
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* Move the mouse across the screen to move the circle.
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* The program constrains the circle to its box.
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*/
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float mx;
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float my;
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float easing = 0.05;
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float esize = 25.0;
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int box = 30;
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void setup()
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{
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size(200, 200);
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noStroke();
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smooth();
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ellipseMode(CENTER_RADIUS);
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}
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void draw()
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{
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background(51);
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if(abs(mouseX - mx) > 0.1) {
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mx = mx + (mouseX - mx) * easing;
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}
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if(abs(mouseY - my) > 0.1) {
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my = my + (mouseY- my) * easing;
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}
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float distance = esize * 2;
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mx = constrain(mx, box+distance, width-box-distance);
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my = constrain(my, box+distance, height-box-distance);
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fill(76);
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rect(box+esize, box+esize, box*3, box*3);
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fill(255);
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ellipse(mx, my, esize, esize);
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}
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