refactor project structure, implement tessellator

2022-01-31 20:15:27 +01:00
parent 192417f626
commit 293a6d9553
15 changed files with 160 additions and 36 deletions
@@ -0,0 +1,38 @@
+window.Tessellator = class {
+
+    constructor() {
+        this.material = new THREE.MeshBasicMaterial({
+            color: 0xffffff,
+            side: THREE.BackSide
+        });
+    }
+
+    bindTexture(texture) {
+        this.material.map = texture;
+    }
+
+    startDrawing() {
+        this.verticies = [];
+        this.uv = [];
+    }
+
+    addVertexWithUV(x, y, z, u, v) {
+        this.verticies.push(x);
+        this.verticies.push(y);
+        this.verticies.push(z);
+
+        this.uv.push(u);
+        this.uv.push(v);
+    }
+
+    draw(group) {
+        let geometry = new THREE.BufferGeometry();
+        geometry.setAttribute('position', new THREE.BufferAttribute(new Float32Array(this.verticies), 3));
+        geometry.setAttribute('uv', new THREE.BufferAttribute(new Float32Array(this.uv), 2));
+        geometry.setIndex(new THREE.BufferAttribute(new Uint32Array([0, 2, 1, 0, 3, 2]), 1));
+
+        let mesh = new THREE.Mesh(geometry, this.material);
+        group.add(mesh);
+    }
+
+}