15 lines
361 B
JavaScript
15 lines
361 B
JavaScript
function bline(x0, y0, x1, y1) {
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var dx = Math.abs(x1 - x0), sx = x0 < x1 ? 1 : -1;
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var dy = Math.abs(y1 - y0), sy = y0 < y1 ? 1 : -1;
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var err = (dx>dy ? dx : -dy)/2;
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while (true) {
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setPixel(x0,y0);
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if (x0 === x1 && y0 === y1) break;
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var e2 = err;
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if (e2 > -dx) { err -= dy; x0 += sx; }
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if (e2 < dy) { err += dx; y0 += sy; }
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}
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}
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