dockered

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

@@ -0,0 +1,42 @@
+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, 0],
+	);
+
+	mat4.scale(
+		modelMatrix,
+		modelMatrix,
+		[sx, sy, sz]
+	);
+
+	mat4.translate(
+		modelMatrix,
+		modelMatrix,
+		[-1, 0, 0] // wtf, this works ?
+	);
+
+	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 };