rabbit-ear/module/webgl/foldedForm/uniforms.js

origami design library

/* Rabbit Ear 0.9.4 alpha 2024-04-20 (c) Kraft, GNU GPLv3 License */

import { multiplyMatrices4, identity4x4 } from '../../math/matrix4.js';
import { parseColorToWebGLColor } from '../general/colors.js';

const makeUniforms = ({
	projectionMatrix,
	modelViewMatrix,
	frontColor,
	backColor,
	outlineColor,
	strokeWidth,
	opacity,
}) => ({
	u_matrix: {
		func: "uniformMatrix4fv",
		value: multiplyMatrices4(
			projectionMatrix || identity4x4,
			modelViewMatrix || identity4x4,
		),
	},
	u_projection: {
		func: "uniformMatrix4fv",
		value: projectionMatrix || identity4x4,
	},
	u_modelView: {
		func: "uniformMatrix4fv",
		value: modelViewMatrix || identity4x4,
	},
	u_frontColor: {
		func: "uniform3fv",
		value: parseColorToWebGLColor(frontColor || "gray"),
	},
	u_backColor: {
		func: "uniform3fv",
		value: parseColorToWebGLColor(backColor || "white"),
	},
	u_outlineColor: {
		func: "uniform3fv",
		value: parseColorToWebGLColor(outlineColor || "black"),
	},
	u_strokeWidth: {
		func: "uniform1f",
		value: strokeWidth !== undefined ? strokeWidth : 0.05,
	},
	u_opacity: {
		func: "uniform1f",
		value: opacity !== undefined ? opacity : 1,
	},
});

export { makeUniforms };