60 lines
2.1 KiB
JavaScript
60 lines
2.1 KiB
JavaScript
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// 3D Audio-Waves -> maybe also 2D?
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class Wave extends Visual {
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updateData() {
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this.data = [];
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let data = audioHandler.getFloatArray();
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let add = 2 / data.length,
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x = -1;
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for (let i = 0; i < data.length; i++) {
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this.data.push(x, data[i], data[i]);
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x += add;
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}
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}
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draw(program) {
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c.width = window.innerWidth;
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c.height = window.innerHeight;
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this.prepare(program);
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let position = this.position,
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color = this.color,
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positionBuffer = gl.createBuffer();
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this.rotate(program);
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gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
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gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(this.data), gl.DYNAMIC_DRAW);
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let vao = gl.createVertexArray();
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gl.bindVertexArray(vao);
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gl.enableVertexAttribArray(position);
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gl.vertexAttribPointer(position, 3, gl.FLOAT, true, 0, 0);
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gl.clearColor(0, 0, 0, 1);
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gl.enable(gl.DEPTH_TEST);
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gl.depthFunc(gl.LEQUAL);
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gl.clearDepth(2.0)
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gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
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gl.viewport(0, 0, gl.canvas.width, gl.canvas.height);
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gl.drawArrays(gl.LINE_STRIP || gl.POINTS, 0, this.data.length / 3);
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}
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rotate(program) {
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let aspect = c.height / c.width,
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matrix = [
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1 / aspect, 0, 0, 0,
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0, 1, 0, 0,
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0, 0, 1, 0,
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0, 0, 0, 1
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]
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matrix = TDUtils.multiply(matrix, TDUtils.xRotation(config.getItem("xRotate", 0)));
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matrix = TDUtils.multiply(matrix, TDUtils.yRotation(config.getItem("yRotate", 0)));
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matrix = TDUtils.multiply(matrix, TDUtils.zRotation(config.getItem("zRotate", 0)));
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let rotate = gl.getUniformLocation(program, "u_matrix");
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gl.uniformMatrix4fv(rotate, false, matrix);
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}
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setup() {
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audioHandler.fftSize(16384)
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}
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prepare(program) {
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this.position = gl.getAttribLocation(program, "a_position");
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this.color = gl.getUniformLocation(program, "u_color");
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}
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}
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