3. Given is the equation below for a so-called horizontal shear, one type of an affine geometric transformation: (X1,0) = (x,,0) X1 X-x+sy y = y y

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Chapter2: Second-order Linear Odes
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D1
3. Given is the equation below for a so-called
horizontal shear, one type of an affine
geometric transformation:
(x1,0)%3D(x",0)
X1
x =x+ sy
y y
In this equation (x,y) are coordinates in the
source image; (x y) are the corresponding
coordinates in the new (sheared) image. In the
figure at the right for one point (xI,0) in the
source image the corresponderending
transformed point is given: the source point
and the transformed point coincide.
• Construct, in the figure, the shear of two different points. The x-coordinates of
these two point should be similar to that of the given point (so the source points
lie somewhere on the vertical dashed line). Choose as shear factor s = 1,5. Show
your construction method.
%3D
What would happen when a line parallel to the dashed line would be sheared with
the same shear factor?
Transcribed Image Text:3. Given is the equation below for a so-called horizontal shear, one type of an affine geometric transformation: (x1,0)%3D(x",0) X1 x =x+ sy y y In this equation (x,y) are coordinates in the source image; (x y) are the corresponding coordinates in the new (sheared) image. In the figure at the right for one point (xI,0) in the source image the corresponderending transformed point is given: the source point and the transformed point coincide. • Construct, in the figure, the shear of two different points. The x-coordinates of these two point should be similar to that of the given point (so the source points lie somewhere on the vertical dashed line). Choose as shear factor s = 1,5. Show your construction method. %3D What would happen when a line parallel to the dashed line would be sheared with the same shear factor?
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