?? parametric3d.m
字號:
close all;
clear all;
x0 = [0 0 10];
x1 = [1 0 0];
x2 = [0 1 0];
x3 = [0 0 0.5];
x4 = [0 0 -0.25];
N = 10;
M = 2*N+1;
% define a target arrays
p = zeros( M,M,3 );
ri = -N:N;
sj = -N:N;
% compute the position at each (r,s) pair
for i =1:M
for j = 1:M
r = ri(i);
s = sj(j);
p(i,j,:) = x0 + r*x1 + r^2*x3 + s*x2 + s^2*x4;
end
end
% make a visualisation
figure;
surf( p(:,:,1), p(:,:,2), p(:,:,3) );
figure;
hold on
surf( p(:,:,1), p(:,:,2), p(:,:,3) );
surf( p(:,:,1), p(:,:,2), 0*p(:,:,3) );
view(3);
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -