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42 lines
789 B
Plaintext
42 lines
789 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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* Updated 27 February 2010 to handle changes in size().
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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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int radius = 24;
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int edge = 56;
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int inner = edge + radius;
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void setup() {
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size(200, 200);
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noStroke();
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smooth();
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ellipseMode(RADIUS);
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rectMode(CORNERS);
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}
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void draw() {
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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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mx = constrain(mx, inner, width - inner);
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my = constrain(my, inner, height - inner);
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fill(76);
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rect(edge, edge, width-edge, height-edge);
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fill(255);
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ellipse(mx, my, radius, radius);
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}
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