1 files changed, 41 insertions, 0 deletions
diff --git a/src/view/Scene.ts b/src/view/Scene.ts
new file mode 100644
index 0000000..0de7546
--- /dev/null
+++ b/src/view/Scene.ts
@@ -0,0 +1,41 @@
+import Renderer from './Renderer';
+
+class Scene {
+	private triangleVertexPositionBuffer: WebGLBuffer;
+	private squareVertexPositionBuffer: WebGLBuffer;
+
+	constructor(private r: Renderer) {
+		this.triangleVertexPositionBuffer = r.createBuffer();
+		r.gl.bindBuffer(r.gl.ARRAY_BUFFER, this.triangleVertexPositionBuffer);
+		const triangleVertices = [
+			-1.5,  1.0,
+			-2.5, -1.0,
+			-0.5, -1.0,
+		];
+		r.gl.bufferData(r.gl.ARRAY_BUFFER, new Float32Array(triangleVertices), r.gl.STATIC_DRAW);
+
+		this.squareVertexPositionBuffer = r.createBuffer();
+		r.gl.bindBuffer(r.gl.ARRAY_BUFFER, this.squareVertexPositionBuffer);
+		const squareVertices = [
+			2.5,  1.0,
+			0.5,  1.0,
+			2.5, -1.0,
+			0.5, -1.0,
+		];
+		r.gl.bufferData(r.gl.ARRAY_BUFFER, new Float32Array(squareVertices), r.gl.STATIC_DRAW);
+	}
+
+	draw(): void {
+		this.r.gl.clear(this.r.gl.COLOR_BUFFER_BIT | this.r.gl.DEPTH_BUFFER_BIT);
+
+		this.r.gl.bindBuffer(this.r.gl.ARRAY_BUFFER, this.triangleVertexPositionBuffer);
+		this.r.gl.vertexAttribPointer(this.r.vertexPosLoc, 2, this.r.gl.FLOAT, false, 0, 0);
+		this.r.gl.drawArrays(this.r.gl.TRIANGLES, 0, 3);
+
+		this.r.gl.bindBuffer(this.r.gl.ARRAY_BUFFER, this.squareVertexPositionBuffer);
+		this.r.gl.vertexAttribPointer(this.r.vertexPosLoc, 2, this.r.gl.FLOAT, false, 0, 0);
+		this.r.gl.drawArrays(this.r.gl.TRIANGLE_STRIP, 0, 4);
+	}
+}
+
+export default Scene;