[心得] A broken heart

[chungyuandye (養花種魚數月亮賞星星)]

試試8.0 2D-3D 繪圖 Texture 的功能

tt=Import["http://tinyurl.com/3m4awrv"];

ff[xx_]:=Cases[y/.NSolve[(y^2+xx^2-1)^3-y^2*xx^3==0,y],_Real][[-1]];

data={#,RandomReal[{-0.15,0.25}]}&/@Range[-0.9,0.9,0.05];

m[de_]:={{Cos[de],-Sin[de]},{Sin[de],Cos[de]}};

slope[pt_List]:=(pt[[2,2]]-pt[[1,2]])/(pt[[2,1]]-pt[[1,1]]);

pt=Partition[Flatten[{{#[[1]],Min[Max[#[[2]],-ff[#[[1]]]]*0.75,
ff[#[[1]]]]*0.75}&/@data,{{1,0}}},1],2,1];

eq=Piecewise[{slope[#]*(x-#[[1,1]])+#[[1,2]],#[[1,1]]<=x<#[[2,1]]}&/@pt];

bh1=RegionPlot[(y^2+x^2-1)^3-y^2x^3<0&&y<eq,
{y,-1.5,1.5},{x,-1.5,1.5},PlotStyle->Texture[tt]];

bh2=RegionPlot[(y^2+x^2-1)^3-y^2x^3<0&&y>eq,
{y,-1.5,1.5},{x,-1.5,1.5},PlotStyle->Texture[tt]];

Manipulate[Show[
bh1/.GraphicsComplex[a__,b__]:>GraphicsComplex[{-l,0}
+(#+{0,1}).m[-z*Pi/10]&/@a,b],
bh2/.GraphicsComplex[a__,b__]:>GraphicsComplex[{l,0}
+(#+{0,1}).m[z*Pi/10]&/@a,b],
PlotRange->{{-1.5,1.5},{-0.5,2.5}},Frame->False],
{z,0,1,0.1},{l,0,0.3,0.1}
]

--
養花種魚數月亮賞星星

http://chungyuandye.twbbs.org


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