matlab离散点包络 求大神指点绘制空间内散点图的包络面 散点程序如下

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E=[];a=0;b=0;c=0;

for Zp=-50:2:50

for Xp=-200:2:200

for Yp=-200:2:200

P1_1=[cos(b)*cos(c) -cos(b)*sin(c) sin(b) Xp;sin(a)*sin(b)*cos(c)+cos(a)*sin(c) cos(a)*cos(c)-sin(a)*sin(b)*sin(c) -sin(a)*cos(b) Yp;sin(a)*sin(c)-cos(a)*sin(b)*cos(c) cos(a)*sin(b)*sin(c)+sin(a)*cos(c) cos(a)*cos(b) Zp;0 0 0 1]*[42.01;50.25;0;1]+[0;0; -208.897;0];

P2_1=[cos(b)*cos(c) -cos(b)*sin(c) sin(b) Xp;sin(a)*sin(b)*cos(c)+cos(a)*sin(c) cos(a)*cos(c)-sin(a)*sin(b)*sin(c) -sin(a)*cos(b) Yp;sin(a)*sin(c)-cos(a)*sin(b)*cos(c) cos(a)*sin(b)*sin(c)+sin(a)*cos(c) cos(a)*cos(b) Zp;0 0 0 1]*[-42.01;50.25;0;1]+[0;0; -208.897;0];

P3_1=[cos(b)*cos(c) -cos(b)*sin(c) sin(b) Xp;sin(a)*sin(b)*cos(c)+cos(a)*sin(c) cos(a)*cos(c)-sin(a)*sin(b)*sin(c) -sin(a)*cos(b) Yp;sin(a)*sin(c)-cos(a)*sin(b)*cos(c) cos(a)*sin(b)*sin(c)+sin(a)*cos(c) cos(a)*cos(b) Zp;0 0 0 1]*[-64.52;11.26;0;1]+[0;0; -208.897;0];

P4_1=[cos(b)*cos(c) -cos(b)*sin(c) sin(b) Xp;sin(a)*sin(b)*cos(c)+cos(a)*sin(c) cos(a)*cos(c)-sin(a)*sin(b)*sin(c) -sin(a)*cos(b) Yp;sin(a)*sin(c)-cos(a)*sin(b)*cos(c) cos(a)*sin(b)*sin(c)+sin(a)*cos(c) cos(a)*cos(b) Zp;0 0 0 1]*[-22.51;-61.51;0;1]+[0;0; -208.897;0];

P5_1=[cos(b)*cos(c) -cos(b)*sin(c) sin(b) Xp;sin(a)*sin(b)*cos(c)+cos(a)*sin(c) cos(a)*cos(c)-sin(a)*sin(b)*sin(c) -sin(a)*cos(b) Yp;sin(a)*sin(c)-cos(a)*sin(b)*cos(c) cos(a)*sin(b)*sin(c)+sin(a)*cos(c) cos(a)*cos(b) Zp;0 0 0 1]*[22.51;-61.51;0;1]+[0;0; -208.897;0];

P6_1=[cos(b)*cos(c) -cos(b)*sin(c) sin(b) Xp;sin(a)*sin(b)*cos(c)+cos(a)*sin(c) cos(a)*cos(c)-sin(a)*sin(b)*sin(c) -sin(a)*cos(b) Yp;sin(a)*sin(c)-cos(a)*sin(b)*cos(c) cos(a)*sin(b)*sin(c)+sin(a)*cos(c) cos(a)*cos(b) Zp;0 0 0 1]*[64.52;11.26;0;1]+[0;0; -208.897;0];

ZB1_1=P1_1(3)+sqrt(223^2-(P1_1(1)-27.15)^2-(P1_1(2)-126.87)^2);

ZB2_1=P2_1(3)+sqrt(223^2-(P2_1(1)+27.15)^2-(P2_1(2)-126.87)^2);

ZB3_1=P3_1(3)+sqrt(223^2-(P3_1(1)+123.45)^2-(P3_1(2)+39.92)^2);

ZB4_1=P4_1(3)+sqrt(223^2-(P4_1(1)+96.29)^2-(P4_1(2)+86.95)^2);

ZB5_1=P5_1(3)+sqrt(223^2-(P5_1(1)-96.29)^2-(P5_1(2)+86.95)^2);

ZB6_1=P6_1(3)+sqrt(223^2-(P6_1(1)-123.45)^2-(P6_1(2)+39.92)^2);

if ((ZB1_1<=50)&&(ZB2_1<=50)&&(ZB3_1<=50)&&(ZB4_1<=50)&&(ZB5_1<=50)&&(ZB6_1<=50)&&(ZB1_1>=(-50))&&(ZB2_1>=(-50))&&(ZB3_1>=(-50))&&(ZB4_1>=(-50))&&(ZB5_1>=(-50))&&(ZB6_1>=(-50)))

P0_1=[cos(b)*cos(c) -cos(b)*sin(c) sin(b) Xp;sin(a)*sin(b)*cos(c)+cos(a)*sin(c) cos(a)*cos(c)-sin(a)*sin(b)*sin(c) -sin(a)*cos(b) Yp;sin(a)*sin(c)-cos(a)*sin(b)*cos(c) cos(a)*sin(b)*sin(c)+sin(a)*cos(c) cos(a)*cos(b) Zp;0 0 0 1]*[0;0;0;1]+[0;0; -208.897;0];

E=[E,P0_1];

end

end

end

end

Xp0_1=E(1,:);

Yp0_1=E(2,:);

Zp0_1=E(3,:);

plot3(Xp0_1,Yp0_1,Zp0_1,'.');

xlabel('x');ylabel('y');zlabel('z');

grid on