59 lines
1.1 KiB
Markdown
59 lines
1.1 KiB
Markdown
### Getting the context
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var canvas = document.getElementById('c');
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var c = canvas.getContext("2d");
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### Basic drawing
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// x = 10, y = 20, width = 200, height = 100
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c.fillStyle = '#ff0000';
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c.strokeStyle = '#ff00ff';
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c.lineWidth = 5;
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c.lineCap = 'round';
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c.fillRect(10, 20, 200, 100);
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c.stroke();
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### Image drawing
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c.drawImage(image, dx, dy, [dw, dh]);
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/* `image` can be HTML Image/Canvas/Video */
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### Colors, styles shadows
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c.strokeStyle = '#ff00ff';
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c.fillStyle = '#ff00ff';
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c.shadowOffsetX = 0;
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c.shadowOffsetY = 0;
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c.shadowOffsetBlur = 3.0;
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c.shadowColor = 'rgba(0,0,0,0.2)';
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### Gradients
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gr = c.createLinearGgadient(x0,y0,x1,y1)
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gr = c.createRadialGradient(x0,y0,r0,x1,y1,r1)
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pat = c.createPattern(image, 'repeat-x')
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c.fillStyle = gr
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### Drawing
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c.beginPath()
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c.moveTo(x,y)
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c.lineTo(x,y)
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c.quadraticCurveTo(cpx,cpy,x,y)
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c.bezierCurveTo(cp1x,cp1y,cp2x,cp2y)
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c.arcTo(...)
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c.arc(...)
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c.closePath()
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### Text
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### Resources
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* [Canvas Cheatsheet PDF][cc]
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[cc]: http://www.nihilogic.dk/labs/canvas_sheet/HTML5_Canvas_Cheat_Sheet.pdf
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