2D Translation in Computer Graphics
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Computer Graphics 2D Translation
We can move any object from one to another place without changing the shape of the object.
For Example-
Translation of a Point: If we want to translate a point from P (x0, y0) to Q (x1, y1), then we have to add Translation coordinates (Tx, Ty) with original coordinates.
We can also represent the translation in matrix form-
We can apply Translation on following objects-
- Line
- Rectangle
- Polygon
- Square
Homogeneous Coordinate Representation:
The above Translation is also shown in the form of 3 x 3 matrix-
Here, Translation coordinates (Tx, Ty) are also called “Translation or Shift Vector.”
Example– Given a Point with coordinates (2, 4). Apply the translation with distance 4 towards x-axis and 2 towards the y-axis. Find the new coordinates without changing the radius?
Solution: P = (x0, y0) = (2,4)
Shift Vector = (Tx, Ty) = (4, 2)
Let us assume the new coordinates of P = (x1, y1)
Now we are going to add translation vector and given coordinates, then
x1 = x0 + Tx = (2 + 4) = 6
y1 = y0 + Ty = (4 + 2) = 6
Thus, the new coordinates = (6,6)
