How to create 3D block graphic?

Question

Reuben 2016-3-3

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/271230-how-to-create-3d-block-graphic

回答： Mike Garrity 2016-3-3

In one of my classes we are obtaining accelerometer and magnetometer data from an iphone app, importing it into Matlab, and then plotting the angles between the x,y, and z axis in space to obtain real time data of the phone orientation.

Therefore, I have angles for each time interval. For fun, I want to make a 3D simulation instead of just viewing a plot of the angles vs. time.

More specifically, I am looking to create a block (the size of an iphone) in 3D space and then based on the input data for each time instance, see the block rotate in real time.

This way I can visually confirm that the movements I have made with my phone correspond to the MATLAB simulation with the data.

In order to do this, I would need some way to specify the angle with respect to each axis and have the graphics update at every time interval. I have no MATLAB graphic coding experience. Can anyone help?

Thanks.

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Answer 1

Mike Garrity 2016-3-3

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/271230-how-to-create-3d-block-graphic#answer_212154

在 MATLAB Online 中打开

This should give you some ideas on where to start:

w = 2;
h = 5;
d = 1/4;
verts = [-w -h -d; ...
          w -h -d; ...
         -w  h -d; ...
          w  h -d; ...
         -w -h  d; ...
          w -h  d; ...
         -w  h  d; ...
          w  h  d];
faces = [3 4 8 7; ...
         4 2 6 8; ...
         2 1 5 6; ...
         1 3 7 5; ...
         7 8 6 5; ...
         1 2 4 3];
g = hgtransform;     
patch('Vertices',verts,'Faces',faces,'FaceColor',[.75 .75 .75],'Parent',g)
view(3)
box on
axis vis3d
daspect([1 1 1])
for x=linspace(0,2*pi,50)
  for y=linspace(0,2*pi,50)
    for z=linspace(0,2*pi,50)
      g.Matrix = makehgtform('xrotate',x,'yrotate',y,'zrotate',z);
      drawnow
    end
  end