Discussion:
projectivity linear on all rays (2D)
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Thomas Plehn
2017-06-15 13:33:14 UTC
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What does ist mean that a projectivity is linear on all rays?
For some rectangle, is that the same as bilinear interpolation?
Observe a large domain and small return values.
Thomas Plehn
2017-06-15 13:50:52 UTC
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Post by Thomas Plehn
What does ist mean that a projectivity is linear on all rays?
For some rectangle, is that the same as bilinear interpolation?
Observe a large domain and small return values.
or can you somehaow explain the scanline algorithm wich uses the linearity on all rays for a set of 4 points and 4 return values?
This is all 2D and y do it for both components.
Thomas Plehn
2017-06-15 14:15:42 UTC
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Post by Thomas Plehn
What does ist mean that a projectivity is linear on all rays?
For some rectangle, is that the same as bilinear interpolation?
Observe a large domain and small return values.
one would use three ray interpolations with 4 points in 2d

also in this case, the projectivity should almost be identity and the offsets are interpolated
Thomas Plehn
2017-06-15 14:16:35 UTC
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Post by Thomas Plehn
What does ist mean that a projectivity is linear on all rays?
For some rectangle, is that the same as bilinear interpolation?
Observe a large domain and small return values.
is that exact?

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