《WHY数学图像生成器》绘制精美的壁纸图案
本文，我介绍几个漂亮的壁纸，以及相应的“代码”。我不是这些图案的发明人，我只是一个“搬运工”。
工具/原料
电脑
WHY数学图像生成器
多边形渐变图案
1、第一幅图的代码如下图。长代码就不贴出来了，读者见谅。
2、用《WHY数学图像生成器》导出的图片，比下面的图片要大，因为受到百度的压缩。
3、纵向的图案，隐含着横向图形的渐变：pixels = W:1024 H:1024x = from -1 to 1 Wy = from -1 to 1 Ht = 21.34r = 0g = sin(x*12.0+sin(x*50.0)*(4.0*sin(10.0 + t*2.0))+sin(10.0 + (t+10.0)*2.0*y)*2.0)b = 0
眩晕图案
1、这里给出一个眩晕图案，因为代码较简短，所以贴出来：pixels = W:500 H:500x = from 0 to 20 Wy = from 0 to 20 Ht = sign(cos(length2(ceil(x), ceil(y))*99.0))x = x*tx = fract(x)y = fract(y)r = cos(min(length2(x, y), length2(x-1, y-1))*44.0)g = 0.5b =0.5
2、用下图的代码，可以得到另一种眩晕效果：
3、简单的图形重复排列，也能产生眩晕效果。
4、还有这个圆形重复图案：pixels = W:500 H:500x = from -16 to 16 Wy = from -16 to 16 Hfx = fract(x)fy = fract(y)size = 0.4w = length2(fx - 0.5, fy - 0.5) - sizek = clamp(0, 1, w/0.06)r = 0g = 2*kb = 0.9
极坐标图案
1、这是一个类似于反演的兔脒巛钒图案：pixels = W:500 H:500x = from -1 to 1 Wy = from -1 to 1 Hax = x + 0.5bx = x - 0.5s 租涫疼迟= 365a = sin(length2(ax, y)*s) -sin(length2(bx, y)*s)b = atan2(y, ax) -atan2(y, bx)r = 2*a*cos(3*b)g = 6*a*sin(2*b)b = 0.16
2、飘落的雪花。
对称图案
1、下面的炫图，明显关于对角线对称。pixels = W:1024 H:1024x = from -4 to 4 Wy = from -4 to 4 Ht = reflect2d_x(sin(x)荑樊综鲶, sin(y), cos(x), cos(y))y = reflect2d_y(sin(x), sin(y), cos(x), cos(y))x = tt = reflect2d_x(sin(x), sin(y), cos(x), cos(y))y = reflect2d_y(sin(x), sin(y), cos(x), cos(y))x = tt = reflect2d_x(sin(x), sin(y), cos(x), cos(y))y = reflect2d_y(sin(x), sin(y), cos(x), cos(y))x = tr = cos(x*10)*0.5g = cos(y*10)*0.5+0.5b = cos(length2(x,y)*4)*0.5+0.5
2、同心圆图案：pixels = W:500 H:500x = from 0 to 6 Wy = from 0 to 6 Hpx = mod(x * 8.0, 4.0) - 2.0py = mod(y * 8.0, 4.0) - 2.0h = length2(px, py)k = sin(h*16)r = 2*kg = 0.36*kb = 0.5*k
3、让人心明眼亮的图案：
4、炫彩的波浪线，看着就想一个个的正弦曲线。
水波荡漾
1、这个图，看着就像是波光粼粼的水面。
2、但是图案一旦出现重复，看着就不那么真实了。
3、这得多剧烈的震动，才能把水面月光弄成这样？代码反倒很简单：pixels = W:1024 H:1024x = from -2.5 to 2.5 Wy = from -2.5 to 2.5 Ha = 1.5p = 10.0t = 1.156u = x/cos(y*p-t)/p*av = y/sin(x*p-t)/p*ad = 0.1/(u*u + v*v)r = mix(1.0/d, d, 1.0)g = mix(1.0/d, d, 3.0)b = mix(1.0/d, d, 5.0)
沙漠
1、沙漠，给人的感觉，就是一个沙浪滚滚的景象。为了不那么干燥，特意变色为浅绿：pixels = W:500 H:500x = from -32 to 32 Wy = from -32 to 32 Hk = sin(x*y*0.2+cos(y*0.4)*7.0)*0.5+0.5r = kg = 2b = 0
