plot3d

	環面、Villarceaux圓、環面上之圖案
	圓柱面上之曲線、環面上之曲線、鞍面、Monkey's Saddle
	球面上之曲線、球面上之圖案
	旋轉曲面、結
	微積分所探討的立體模型曲率
	動態生成
	微積分所探討的立體模型
	球面上相切的圓
	球面與正多面體之設計
	動態圖形animate gif之製作

球面上之曲線、球面上之圖案

	*plot3d([sin(phi)sin(2phi),theta,phi],theta=0..2Pi,phi=0..Pi,scaling=constrained,coords=spherical,grid=[51,51]);**
	with(plots); n:=sqrt(x^2+y^2+z^2); z:=1; p1:=plot3d([x/n,y/n,z/n],x=-1..1,y=-1..1,scaling=constrained,color=red): z:=-1; p2:=plot3d([x/n,y/n,z/n],x=-1..1,y=-1..1,scaling=constrained,color=red): unassign('z'); x:=1; p3:=plot3d([x/n,y/n,z/n],z=-1..1,y=-1..1,scaling=constrained,color=blue): x:=-1; p4:=plot3d([x/n,y/n,z/n],z=-1..1,y=-1..1,scaling=constrained,color=blue): unassign('x'); y:=1; p5:=plot3d([x/n,y/n,z/n],z=-1..1,x=-1..1,scaling=constrained,color=yellow): y:=-1; p6:=plot3d([x/n,y/n,z/n],z=-1..1,x=-1..1,scaling=constrained,color=yellow): display(p1,p2,p3,p4,p5,p6);
	*plot3d([1,theta,rho],theta=0..2Pi,rho=0..Pi,coords=spherical,scaling=constrained);**
	with(plots): p1:=plot3d([1,theta+rho,rho],theta=0..Pi/3,rho=0..Pi,coords=spherical,scaling=constrained,color=green): *p2:=plot3d([1,theta+rho,rho],theta=Pi/3..2Pi/3,rho=0..Pi,coords=spherical,scaling=constrained,color=red): p3:=plot3d([1,theta+rho,rho],theta=2Pi/3..Pi,rho=0..Pi,coords=spherical,scaling=constrained,color=COLOR(RGB,0.2,0.2,0.6)):* *p4:=plot3d([1,theta+rho,rho],theta=Pi..4Pi/3,rho=0..Pi,coords=spherical,scaling=constrained,color=COLOR(RGB,0.7,0.2,0.1)): p5:=plot3d([1,theta+rho,rho],theta=4Pi/3..5Pi/3,rho=0..Pi,coords=spherical,scaling=constrained,color=COLOR(RGB,0.3,0.2,0.5)): p6:=plot3d([1,theta+rho,rho],theta=5Pi/3..2Pi,rho=0..Pi,coords=spherical,scaling=constrained,color=COLOR(RGB,0.5,0.49,0.01)): display(p1,p2,p3,p4,p5,p6);**

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