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41 lines
745 B
Plaintext
41 lines
745 B
Plaintext
/**
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* Easing.
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*
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* Move the mouse across the screen and the symbol will follow.
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* Between drawing each frame of the animation, the program
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* calculates the difference between the position of the
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* symbol and the cursor. If the distance is larger than
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* 1 pixel, the symbol moves part of the distance (0.05) from its
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* current position toward the cursor.
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*/
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float x;
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float y;
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float targetX, targetY;
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float easing = 0.05;
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void setup()
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{
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size(640, 360);
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noStroke();
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}
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void draw()
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{
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background(51);
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targetX = mouseX;
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float dx = targetX - x;
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if(abs(dx) > 1) {
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x += dx * easing;
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}
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targetY = mouseY;
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float dy = targetY - y;
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if(abs(dy) > 1) {
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y += dy * easing;
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}
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ellipse(x, y, 66, 66);
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}
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