import { initializeContext, Vec2, Mat4 } from "./common.js";
import { Graphics, fullscreenCanvas, Texture } from "./graphics.js";
import * as drawing from "./draw.js";
import * as wasm from "./wasm.js";
const vertexShader = `#version 300 es
     
    in vec2 a_position;
    in vec2 a_tex_position;
    out vec2 v_tex_position;
    uniform mat4 u_matrix;
     
    void main() {
        vec4 transformed = u_matrix * vec4(a_position.xy, 0.0, 1.0);

        gl_Position = transformed;
        v_tex_position = a_tex_position;
    }
`;
const fragmentShader = `#version 300 es

    precision highp float;

    in vec2 v_tex_position;
    out vec4 outColor;

    uniform sampler2D u_texture;

    void main() {
      outColor = texture(u_texture, v_tex_position);
    }
`;
function draw(gfx, angle, tex) {
    gfx.clear(0, 0, 0, 0);
    let left = 0;
    let right = gfx.ctx.canvas.width;
    let bottom = 0;
    let top = gfx.ctx.canvas.height;
    let near = -1;
    let far = 1;
    let m = Mat4.orthographic(left, right, bottom, top, near, far);
    m = m.mult(Mat4.rotation_x(angle));
    m = m.mult(Mat4.rotation_y(angle));
    m = m.mult(Mat4.rotation_z(angle));
    gfx.ctx.uniformMatrix4fv(gfx.getUniform("u_matrix"), false, m.splat());
    drawing.drawRectangle(gfx, new Vec2(gfx.ctx.canvas.width / 2 - 200, gfx.ctx.canvas.height / 2 - 200), new Vec2(400, 400), tex);
}
(async () => {
    const canvasId = "game";
    const ctx = initializeContext(canvasId);
    if (ctx === null)
        return;
    const gfx = new Graphics(ctx, vertexShader, fragmentShader);
    fullscreenCanvas(gfx, canvasId);
    const a_position = gfx.createAttribute("a_position");
    a_position.format(2, gfx.ctx.FLOAT, false, 0, 0);
    //const a_color = gfx.createAttribute("a_color");
    //a_color.format(4, gfx.ctx.FLOAT, false, 0, 0);
    const a_tex_position = gfx.createAttribute("a_tex_position");
    a_tex_position.format(2, gfx.ctx.FLOAT, false, 0, 0);
    gfx.createUniform("u_matrix");
    let city = await Texture.load(ctx, "../../assets/genetica/rt/City Night.jpg");
    let angle = 0;
    let prevTimestamp = 0;
    const frame = (timestamp) => {
        const deltaTime = (timestamp - prevTimestamp) / 1000;
        prevTimestamp = timestamp;
        fullscreenCanvas(gfx, "game");
        draw(gfx, angle, city);
        angle += Math.PI * deltaTime * 0.5;
        window.requestAnimationFrame(frame);
    };
    window.requestAnimationFrame((timestamp) => {
        prevTimestamp = timestamp;
        window.requestAnimationFrame(frame);
    });
    let wasmgl = new wasm.WASMGL(await wasm.loadWasmModule("./src/wasm/module.wasm"));
})();