File:Surface of revolution illustration.png
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Size of this preview: 469 × 599 pixels. Other resolutions: 188 × 240 pixels | 376 × 480 pixels | 693 × 885 pixels.
Original file (693 × 885 pixels, file size: 130 KB, MIME type: image/png)
Summary
| Description |
Illustration of a en:surface of revolution |
| Date | (UTC) |
| Source |
 This diagram was created with MATLAB. source code below |
| Author | Oleg Alexandrov |
| Other versions |
Derivative works of this file: Surface of revolution illustration violett.png:  |
|
I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
Source code (MATLAB)
% illustration of a surface of revolution
function main()
% the number of data points. More points means prettier picture.
N = 300;
a=-3; b = 4.3;
% polar coordinates
ZZ = linspace(a, b, N);
TTheta = linspace(0, 2*pi, N);
% mesh grid
[Z, Theta] = meshgrid(ZZ, TTheta);
% the curve we will revolve
R = cos(Z)+2;
X = R.*cos(Theta); Y = R.*sin(Theta);
figure(2); clf; hold on; axis equal; axis off;
% plot the surface
H=surf(X, Y, Z); shading faceted;
% pick a color
mycolor=[184, 77, 66]/256; % pink brick
mycolor=[184, 224, 98]/256; % light green
% mycolor=[225, 168, 48]/256; % golden brown
% mycolor=[0, 66, 17]/256; % dark green
% mycolor=[225, 0, 84]/256; % pink
% set some propeties
set(H, 'FaceColor', mycolor, 'EdgeColor','none', 'FaceAlpha', 1);
set(H, 'SpecularColorReflectance', 0.1, 'DiffuseStrength', 0.8);
set(H, 'FaceLighting', 'phong', 'AmbientStrength', 0.3);
set(H, 'SpecularExponent', 108);
% viewing angle
view(0, 12);
% add in a source of light
camlight (-50, 54); lighting phong;
% save as png
print('-dpng', '-r200', 'Surface_of_revolution_illustration.png');
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:15, 8 September 2011 | | 693 × 885 (130 KB) | wikimediacommons>Quibik | Smoothed the edges and added transparency. |
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