SCALING

The animation illustrates a transformation sequence to produce scaling with respect to a selected fixed position (a,b) using a scaling function that can only scale rela­tive to the coordinate origin.

  1. Translate object so that the fixed point coincides with the coordinate origin.

  2. Scale the object with respect to the coordinate origin.

  3. Use the inverse translation of step 1 to return the object to its original position.

 

 

 

The composite matrix for this sequence is obtained as:

where,

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