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frontend/static/js/3D/cube.js

@@ -0,0 +1,44 @@
+import { shaderInfos } from "../3D/shaders.js"
+
+function renderCube(ctx, x, y, z, angle = 0, sx = 1, sy = 1, sz = 1)
+{
+	const modelMatrix = mat4.create();
+
+	mat4.translate(
+		modelMatrix,
+		modelMatrix,
+		[x, y, z]
+	);
+
+	mat4.rotate(
+		modelMatrix,
+		modelMatrix,
+		angle,
+		[0, 1, 1],
+	);
+
+	mat4.scale(
+		modelMatrix,
+		modelMatrix,
+		[sx, sy, sz]
+	);
+
+	const normalMatrix = mat4.create();
+	mat4.invert(normalMatrix, modelMatrix);
+	mat4.transpose(normalMatrix, normalMatrix);
+
+	ctx.uniformMatrix4fv(
+		shaderInfos.uniformLocations.modelMatrix,
+		false,
+		modelMatrix
+	);
+	ctx.uniformMatrix4fv(
+		shaderInfos.uniformLocations.normalMatrix,
+		false,
+		normalMatrix,
+	);
+
+	ctx.drawElements(ctx.TRIANGLES, 36, ctx.UNSIGNED_SHORT, 0);
+}
+
+export { renderCube };