de.sciss.lucre.geom
Type members
Classlikes
A DistanceMeasure is used in nearest neighbour search,
in order to allow different ways points and children are
favoured or filtered during the search.
A DistanceMeasure is used in nearest neighbour search,
in order to allow different ways points and children are
favoured or filtered during the search.
For simplicity and performance, the measures, although
they could be generalized as Ordered, are given as
Long values. Only comparisons are performed with
the results, therefore some optimizations may be made,
for example the euclidean measure omits taking
the square root of the distances, while still preserving
the ordering between the possible results.
- Companion
- object
A three dimensional cube.
A three dimensional cube.
Wikipedia: "Usually, the octant with all three positive coordinates is referred to as the first octant. There is no generally used naming convention for the other seven octants."
However the article suggests (given that we count from zero):
- 0 (binary 000) - top-front-left
- 1 (binary 001) - top-back-right
- 2 (binary 010) - top-back-left
- 3 (binary 011) - top-front-left
- 4 (binary 100) - bottom-front-left
- 5 (binary 101) - bottom-back-left
- 6 (binary 110) - bottom-back-right
- 7 (binary 111) - bottom-front-right
Obviously there is no clear connection between the orientation and the binary representation. We thus prefer to chose the the octants numbering in a binary fashion, assigning bit 0 to the x-axis, bit 1 to the y-axis, and bit 2 to the z-axis, where top-front-left is 000, hence:
- 0 (binary 000) - left-top-front
- 1 (binary 001) - right-top-front
- 2 (binary 010) - left-bottom-front
- 3 (binary 011) - right-bottom-front
- 4 (binary 100) - left-top-back
- 5 (binary 101) - right-top-back
- 6 (binary 110) - left-bottom-back
- 7 (binary 111) - right-bottom-back
An n-dimensional hyper rectangular.
An n-dimensional hyper rectangular.
- Value Params
- components
pairs of minimum and maximum coordinates for each dimension. In each tuple,
_1must be<=_2. The maximum coordinates are inclusive (defining the maximum coordinate within the shape), thus it is not possible to create rectangles with side lengths of zero.
Provides spaces in which coordinates are expressed using Long values.
Note that the current implementation due to performance considerations
requires that the coordinates are clipped to 62-bit range. That is,
they should be >= -0x2000000000000000L and < 0x2000000000000000L
Provides spaces in which coordinates are expressed using Long values.
Note that the current implementation due to performance considerations
requires that the coordinates are clipped to 62-bit range. That is,
they should be >= -0x2000000000000000L and < 0x2000000000000000L