51 lines
1.8 KiB
HTML
51 lines
1.8 KiB
HTML
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<canvas id="mainCanvas" width="800" height="600"></canvas>
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<script>
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const mainCanvas = document.getElementById("mainCanvas");
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const mainCtx = mainCanvas.getContext("2d");
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// Crear un canvas temporal para la forma base
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function createBaseShapeCanvas(width, height, drawShapeCallback) {
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const tempCanvas = document.createElement("canvas");
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tempCanvas.width = width;
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tempCanvas.height = height;
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const tempCtx = tempCanvas.getContext("2d");
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drawShapeCallback(tempCtx); // Dibujar la forma en el canvas temporal
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return tempCanvas;
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}
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// Dibujar la forma base con diferentes configuraciones de sombra
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function drawShapesWithShadows(baseCanvas) {
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const shadows = [
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{ shadowColor: "rgba(0, 0, 0, 0.5)", shadowBlur: 10, x: 50, y: 50 },
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{ shadowColor: "rgba(255, 0, 0, 0.5)", shadowBlur: 20, x: 50, y: 50 },
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{ shadowColor: "rgba(0, 0, 255, 0.7)", shadowBlur: 15, x: 50, y: 50 },
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];
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shadows.forEach(({ shadowColor, shadowBlur, x, y }, i) => {
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mainCtx.save(); // Guardar estado actual del contexto principal
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mainCtx.shadowColor = shadowColor;
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mainCtx.shadowBlur = shadowBlur;
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mainCtx.shadowOffsetX = i * 10 - 10; // Opcional: ajustar según el efecto deseado
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mainCtx.shadowOffsetY = i * 10 - 10;
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// Dibujar la forma base con la sombra configurada
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mainCtx.drawImage(baseCanvas, x, y);
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mainCtx.restore(); // Restaurar estado para evitar que las sombras se mezclen
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});
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}
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// Crear la forma base
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const baseShapeCanvas = createBaseShapeCanvas(100, 100, (ctx) => {
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ctx.fillStyle = "green";
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ctx.beginPath();
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ctx.arc(50, 50, 50, 0, Math.PI * 2); // Un círculo
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ctx.fill();
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});
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// Dibujar la forma base con diferentes sombras
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drawShapesWithShadows(baseShapeCanvas);
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</script>
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