fill3 not working

Question

Thomas Kirven 2016-5-25

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/285834-fill3-not-working

评论： Walter Roberson 2016-5-26

采纳的回答： Walter Roberson

I am trying to plot a simple white (or any solid color for that matter) rectangle. I've tried

px=[.5 .5 -5 -.5];

py=[-.3 .3 -.3 .3];

pz=[.3 .3 .3 .3];

X = [px; px];

Y = [py; py];

Z = [-pz; pz];

C = [1 1 1 1; 1 1 1 1];

figure

fill3(X,Y,Z,C);

But only a black box shows up. I've tried different values in the C matrix such as all .5's but still just shows the same black box. What am I doing wrong??? I appreciate any help anyone can give,

Thanks,

Thomas

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Answer 1

Walter Roberson 2016-5-25

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https://ww2.mathworks.cn/matlabcentral/answers/285834-fill3-not-working#answer_223427

在 MATLAB Online 中打开

Perhaps

fill3(X',Y',Z',1);

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Thomas Kirven 2016-5-25

Thank you Walter! That worked, well sort of, it plotted two 2-D parallel rectangular planes, but it did not fill the space in between them, which I feel like it should do since it is called fill3 for 3-D polygons, where I have specified the 8 vertices. Do you know how to do this? I realize I could plot four more planar rectangles to make it appear to be a solid shape, but that seems like a ridiculous amount of work.

Thanks!

Walter Roberson 2016-5-26

fill3() does not fill between planes.

"If X, Y, and Z are matrices of the same size, fill3 forms a vertex from the corresponding elements of X, Y, and Z (all from the same matrix location), and creates one polygon from the data in each column."

Each of those polygons is filled -- independently of the others.

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