22 lines
777 B
Matlab
22 lines
777 B
Matlab
% Visualize some common matrix transformations
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% in a 2D coordinate system
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disp( 'Click into the plot to advance to the next matrix' )
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matrixbox( [ 1 0; 0 1], 'Identity' );
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matrixbox( [ 2 0; 0 1], 'Scale x' );
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matrixbox( [ 1 0; 0 2], 'Scale y' );
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matrixbox( [ 2 0; 0 2], 'Scale x and y' );
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matrixbox( [ 0.5 0; 0 0.5], 'Scale x and y' );
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matrixbox( [ -1 0; 0 1], 'Flip x' );
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matrixbox( [ 1 0; 0 -1], 'Flip y' );
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matrixbox( [ -1 0; 0 -1], 'Flip both' );
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matrixbox( [ 1 2; 0 1], 'Shear x' );
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matrixbox( [ 1 0; 2 1], 'Shear y' );
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matrixbox( [ 0.5 1; 1 0.5], 'Something A' );
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matrixbox( [ 0.5 1; 1.2 0.6], 'Something B' );
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% rotation matrices:
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for deg = 0:10:360
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phi = deg*pi/180.0;
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matrixbox( [ cos(phi) -sin(phi); sin(phi) cos(phi)], sprintf( 'Rotate %.0f', deg ) );
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end
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