简单JS代码生成输出心形图案
今天看到一个C语言简单的代码就能输出心形，一直以为这得很复杂呢。。。。稍微改吧一下改成js分享一下[code]@set @a=0;/*&echo off & cscript /nologo /e:jscript %0 & pause&exit */
function heart(){
for(var y=1.5;y>-1.5;y-=0.1){
var line = "";
for(var x=-1.5;x<1.5;x+=0.05){
var a = x*x+y*y - 1;
line+=a*a*a-x*x*y*y*y<0?"*":" ";
}
WSH.Echo(line);
}
}
heart();
function heart2(){
for(var y=1.5;y>-1.5;y-=0.1){
var line = "";
for(var x=-1.5;x<1.5;x+=0.05){
var a = x*x+y*y - 1;
var f = a*a*a-x*x*y*y*y;
line+=f<=0?".:-=+*#%@".split("")[parseInt(f*-8)]:' ';
}
WSH.Echo(line);
}
}
heart2();
function f(x, y, z){
var a = x * x + 9.0 / 4.0 * y * y + z * z - 1;
return a * a * a - x * x * z * z * z - 9.0 / 80.0 * y * y * z * z * z;
}
function h(x, z) {
for (var y = 1.0; y >= 0.0; y -= 0.001)
if (f(x, y, z) <= 0.0)
return y;
return 0.0;
}
function heart3(){
for (var z = 1.5; z > -1.5; z -= 0.05) {
var line = "";
for (var x = -1.5; x < 1.5; x += 0.025) {
var v = f(x, 0.0, z);
if (v <= 0.0) {
var y0 = h(x, z);
var ny = 0.01;
var nx = h(x + ny, z) - y0;
var nz = h(x, z + ny) - y0;
var nd = 1.0 / Math.sqrt(nx * nx + ny * ny + nz * nz);
var d = (nx + ny - nz) * nd * 0.5 + 0.5;
line+=".:-=+*#%@".split("")[parseInt(d * 5.0)]
}
else
line+=' ';
}
WSH.Echo(line);
}
}
heart3();
[/code]
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