index77
let camera, scene, renderer, clock;
let uniforms;
init();
animate();
function init() {
const container = document.getElementById("raymarching");
clock = new THREE.Clock();
camera = new THREE.Camera();
camera.position.z = 1;
scene = new THREE.Scene();
const geometry = new THREE.PlaneBufferGeometry(2, 2);
uniforms = {
u_time: {
type: "f",
value: 1.0
},
u_resolution: {
type: "v2",
value: new THREE.Vector2()
},
};
const material = new THREE.ShaderMaterial({
uniforms,
vertexShader: document.getElementById("vertex").textContent,
fragmentShader: document.getElementById("fragment").textContent
});
const mesh = new THREE.Mesh(geometry, material);
scene.add(mesh);
renderer = new THREE.WebGLRenderer();
renderer.setPixelRatio(window.devicePixelRatio);
container.appendChild(renderer.domElement);
onWindowResize();
window.addEventListener("resize", onWindowResize);
}
function onWindowResize() {
renderer.setSize(window.innerWidth, window.innerHeight);
uniforms.u_resolution.value.x = renderer.domElement.width;
uniforms.u_resolution.value.y = renderer.domElement.height;
}
function render() {
uniforms.u_time.value = clock.getElapsedTime();
renderer.render(scene, camera);
}
function animate() {
render();
requestAnimationFrame(animate);
}