From 9166a58c5fa422c0cd5989bdff39ee6c62e382bf Mon Sep 17 00:00:00 2001
From: syuilo <Syuilotan@yahoo.co.jp>
Date: Sat, 13 May 2023 20:50:21 +0900
Subject: [PATCH] :art:

---
 packages/frontend/src/components/MkAnimBg.vue | 226 ++++++++++++++++++
 .../src/components/MkUserSetupDialog.vue      |   3 +
 2 files changed, 229 insertions(+)
 create mode 100644 packages/frontend/src/components/MkAnimBg.vue

diff --git a/packages/frontend/src/components/MkAnimBg.vue b/packages/frontend/src/components/MkAnimBg.vue
new file mode 100644
index 0000000000..df0765d494
--- /dev/null
+++ b/packages/frontend/src/components/MkAnimBg.vue
@@ -0,0 +1,226 @@
+<template>
+<canvas ref="canvasEl" style="width: 100%; height: 100%;"></canvas>
+</template>
+
+<script lang="ts" setup>
+import { onMounted, onUnmounted, shallowRef } from 'vue';
+import { defaultStore } from '@/store';
+
+const canvasEl = shallowRef<HTMLCanvasElement>();
+
+function loadShader(gl, type, source) {
+	const shader = gl.createShader(type);
+
+	gl.shaderSource(shader, source);
+	gl.compileShader(shader);
+
+	if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
+		alert(
+			`falied to compile shader: ${gl.getShaderInfoLog(shader)}`,
+		);
+		gl.deleteShader(shader);
+		return null;
+	}
+
+	return shader;
+}
+
+function initShaderProgram(gl, vsSource, fsSource) {
+	const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
+	const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
+
+	const shaderProgram = gl.createProgram();
+	gl.attachShader(shaderProgram, vertexShader);
+	gl.attachShader(shaderProgram, fragmentShader);
+	gl.linkProgram(shaderProgram);
+
+	if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
+		alert(
+			`failed to init shader: ${gl.getProgramInfoLog(
+				shaderProgram,
+			)}`,
+		);
+		return null;
+	}
+
+	return shaderProgram;
+}
+
+let handle: ReturnType<typeof window['requestAnimationFrame']> | null = null;
+
+onMounted(() => {
+	const canvas = canvasEl.value!;
+	const gl = canvas.getContext('webgl', { premultipliedAlpha: true });
+
+	if (gl == null) return;
+
+	gl.clearColor(0.0, 0.0, 0.0, 0.0);
+	gl.clear(gl.COLOR_BUFFER_BIT);
+
+	const positionBuffer = gl.createBuffer();
+	gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
+
+	const shaderProgram = initShaderProgram(gl, `
+		attribute vec2 vertex;
+
+		varying vec2 v_pos;
+
+		void main() {
+			gl_Position = vec4(vertex, 0.0, 1.0);
+			v_pos = vertex;
+		}
+	`, `
+		precision mediump float;
+
+		vec3 mod289(vec3 x) {
+			return x - floor(x * (1.0 / 289.0)) * 289.0;
+		}
+
+		vec2 mod289(vec2 x) {
+			return x - floor(x * (1.0 / 289.0)) * 289.0;
+		}
+
+		vec3 permute(vec3 x) {
+			return mod289(((x*34.0)+1.0)*x);
+		}
+
+		float snoise(vec2 v) {
+			const vec4 C = vec4(0.211324865405187,
+													0.366025403784439,
+												-0.577350269189626,
+													0.024390243902439);
+
+			vec2 i  = floor(v + dot(v, C.yy) );
+			vec2 x0 = v -   i + dot(i, C.xx);
+
+			vec2 i1;
+			i1 = (x0.x > x0.y) ? vec2(1.0, 0.0) : vec2(0.0, 1.0);
+			vec4 x12 = x0.xyxy + C.xxzz;
+			x12.xy -= i1;
+
+			i = mod289(i);
+			vec3 p = permute( permute( i.y + vec3(0.0, i1.y, 1.0 ))
+				+ i.x + vec3(0.0, i1.x, 1.0 ));
+
+			vec3 m = max(0.5 - vec3(dot(x0,x0), dot(x12.xy,x12.xy), dot(x12.zw,x12.zw)), 0.0);
+			m = m*m ;
+			m = m*m ;
+
+			vec3 x = 2.0 * fract(p * C.www) - 1.0;
+			vec3 h = abs(x) - 0.5;
+			vec3 ox = floor(x + 0.5);
+			vec3 a0 = x - ox;
+
+			m *= 1.79284291400159 - 0.85373472095314 * ( a0*a0 + h*h );
+
+			vec3 g;
+			g.x  = a0.x  * x0.x  + h.x  * x0.y;
+			g.yz = a0.yz * x12.xz + h.yz * x12.yw;
+			return 130.0 * dot(m, g);
+		}
+
+		uniform float u_time;
+		uniform vec2 u_resolution;
+		uniform float u_spread;
+		uniform float u_speed;
+		uniform float u_warp;
+		uniform float u_focus;
+		uniform float u_itensity;
+
+		varying vec2 v_pos;
+
+		float circle( in vec2 _pos, in vec2 _origin, in float _radius ) {
+			float SPREAD = 0.7 * u_spread;
+			float SPEED = 0.00055 * u_speed;
+			float WARP = 1.5 * u_warp;
+			float FOCUS = 1.15 * u_focus;
+
+			vec2 dist = _pos - _origin;
+
+			float distortion = snoise( vec2(
+				_pos.x * 1.587 * WARP + u_time * SPEED * 0.5,
+				_pos.y * 1.192 * WARP + u_time * SPEED * 0.3
+			) ) * 0.5 + 0.5;
+
+			float feather = 0.01 + SPREAD * pow( distortion, FOCUS );
+
+			return 1.0 - smoothstep(
+				_radius - ( _radius * feather ),
+				_radius + ( _radius * feather ),
+				dot( dist, dist ) * 4.0
+			);
+		}
+
+		void main() {
+			vec3 green = vec3( 1.0 ) - vec3( 153.0 / 255.0, 211.0 / 255.0, 221.0 / 255.0 );
+			vec3 purple = vec3( 1.0 ) - vec3( 195.0 / 255.0, 165.0 / 255.0, 242.0 / 255.0 );
+			vec3 orange = vec3( 1.0 ) - vec3( 255.0 / 255.0, 156.0 / 255.0, 136.0 / 255.0 );
+
+			//float ratio = u_resolution.x / u_resolution.y;
+			float ratio = 1.0;
+
+			vec2 uv = vec2( v_pos.x, v_pos.y / ratio ) * 0.5 + 0.5;
+
+			vec3 color = vec3( 0.0 );
+
+			float greenMix = snoise( v_pos * 1.31 + u_time * 0.8 * 0.00017 ) * 0.5 + 0.5;
+			float purpleMix = snoise( v_pos * 1.26 + u_time * 0.8 * -0.0001 ) * 0.5 + 0.5;
+			float orangeMix = snoise( v_pos * 1.34 + u_time * 0.8 * 0.00015 ) * 0.5 + 0.5;
+
+			float alphaOne = 0.35 + 0.65 * pow( snoise( vec2( u_time * 0.00012, uv.x ) ) * 0.5 + 0.5, 1.2 );
+			float alphaTwo = 0.35 + 0.65 * pow( snoise( vec2( ( u_time + 1561.0 ) * 0.00014, uv.x ) ) * 0.5 + 0.5, 1.2 );
+			float alphaThree = 0.35 + 0.65 * pow( snoise( vec2( ( u_time + 3917.0 ) * 0.00013, uv.x ) ) * 0.5 + 0.5, 1.2 );
+
+			color += vec3( circle( uv, vec2( 0.22 + sin( u_time * 0.000201 ) * 0.06, 0.80 + cos( u_time * 0.000151 ) * 0.06 ), 0.15 ) ) * alphaOne * ( purple * purpleMix + orange * orangeMix );
+			color += vec3( circle( uv, vec2( 0.90 + cos( u_time * 0.000166 ) * 0.06, 0.42 + sin( u_time * 0.000138 ) * 0.06 ), 0.18 ) ) * alphaTwo * ( green * greenMix + purple * purpleMix );
+			color += vec3( circle( uv, vec2( 0.19 + sin( u_time * 0.000112 ) * 0.06, 0.25 + sin( u_time * 0.000192 ) * 0.06 ), 0.09 ) ) * alphaThree * ( orange * orangeMix );
+
+			color *= u_itensity + 1.0 * pow( snoise( vec2( v_pos.y + u_time * 0.00013, v_pos.x + u_time * -0.00009 ) ) * 0.5 + 0.5, 2.0 );
+
+			vec3 inverted = vec3( 1.0 ) - color;
+			gl_FragColor = vec4( color, max(max(color.x, color.y), color.z) );
+		}
+	`);
+
+	gl.useProgram(shaderProgram);
+	const u_resolution = gl.getUniformLocation(shaderProgram, 'u_resolution');
+	const u_time = gl.getUniformLocation(shaderProgram, 'u_time');
+	const u_spread = gl.getUniformLocation(shaderProgram, 'u_spread');
+	const u_speed = gl.getUniformLocation(shaderProgram, 'u_speed');
+	const u_warp = gl.getUniformLocation(shaderProgram, 'u_warp');
+	const u_focus = gl.getUniformLocation(shaderProgram, 'u_focus');
+	const u_itensity = gl.getUniformLocation(shaderProgram, 'u_itensity');
+	gl.uniform2fv(u_resolution, [canvas.width, canvas.height]);
+	gl.uniform1f(u_time, 1.0);
+	gl.uniform1f(u_spread, 1.0);
+	gl.uniform1f(u_speed, 1.0);
+	gl.uniform1f(u_warp, 1.0);
+	gl.uniform1f(u_focus, 1.0);
+	gl.uniform1f(u_itensity, 0.5);
+
+	const vertex = gl.getAttribLocation(shaderProgram, 'vertex');
+	gl.enableVertexAttribArray(vertex);
+	gl.vertexAttribPointer(vertex, 2, gl.FLOAT, false, 0, 0);
+
+	const vertices = [1.0, 1.0, -1.0, 1.0, 1.0, -1.0, -1.0, -1.0];
+	gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(vertices), gl.DYNAMIC_DRAW);
+
+	function render(timeStamp) {
+		gl!.uniform1f(u_time, timeStamp);
+		gl!.drawArrays(gl!.TRIANGLE_STRIP, 0, 4);
+
+		handle = window.requestAnimationFrame(render);
+	}
+
+	handle = window.requestAnimationFrame(render);
+});
+
+onUnmounted(() => {
+	if (handle) {
+		window.cancelAnimationFrame(handle);
+	}
+});
+</script>
+
+<style lang="scss" module>
+</style>
diff --git a/packages/frontend/src/components/MkUserSetupDialog.vue b/packages/frontend/src/components/MkUserSetupDialog.vue
index 4e80a5c0fb..3d7497526c 100644
--- a/packages/frontend/src/components/MkUserSetupDialog.vue
+++ b/packages/frontend/src/components/MkUserSetupDialog.vue
@@ -27,6 +27,7 @@
 		>
 			<template v-if="page === 0">
 				<div :class="$style.centerPage">
+					<MkAnimBg style="position: absolute; top: 0;"/>
 					<MkSpacer :margin-min="20" :margin-max="28">
 						<div class="_gaps" style="text-align: center;">
 							<i class="ti ti-confetti" style="display: block; margin: auto; font-size: 3em; color: var(--accent);"></i>
@@ -78,6 +79,7 @@
 			</template>
 			<template v-else-if="page === 5">
 				<div :class="$style.centerPage">
+					<MkAnimBg style="position: absolute; top: 0;"/>
 					<MkSpacer :margin-min="20" :margin-max="28">
 						<div class="_gaps" style="text-align: center;">
 							<i class="ti ti-check" style="display: block; margin: auto; font-size: 3em; color: var(--accent);"></i>
@@ -106,6 +108,7 @@ import MkButton from '@/components/MkButton.vue';
 import XProfile from '@/components/MkUserSetupDialog.Profile.vue';
 import XFollow from '@/components/MkUserSetupDialog.Follow.vue';
 import XPrivacy from '@/components/MkUserSetupDialog.Privacy.vue';
+import MkAnimBg from '@/components/MkAnimBg.vue';
 import { i18n } from '@/i18n';
 import { instance } from '@/instance';
 import { host } from '@/config';