* inline some more functions, from math_base and math_vector
* also made some changes to the way inline is done so it can
work for more than one file
* reflect_v3_v3v3 requires input vectors to be normalized now.
* added rgb_to_grayscale
* added zero_v4, copy_v4_v4, swap_v4_v4, is_one_v3
* added box_clip_bounds_m4 to clip a bounding box against a
projection matrix
/* given an array with some invalid values this function interpolates valid values
* replacing the invalid ones */
int interp_sparse_array(float *array, int list_size, float skipval)
Useful if you have 2 different characters with the same base mesh (matching indicies), and want to copy a facial expression for eg, from one to another.
Durian request to re-use shapes between characters.
* Copies the active shape to other selected objects
* Different methods to apply the shape
* * OFFSET, simple translation offset
* * RELATIVE (EDGE/FACE), Use Barycentric transformation to copy the shape. This means the target mesh can be a different orientation and scale and the shape should still apply since the surrounding geometry is used as a basis for the offset.
bug: barycentric transform's depth was inverted.
Note:
* This isnt added into a menu yet,
* This cant be redone since adding a shape key messes up the redo stack. needs fixing for other scripts too.
From 2 triangles and 1 point, the relative position between the point and the first triangle is applied to the second triangle to find the target point.
the barycentric weights are calculated in 2D space with a signed area so values outside the triangle bounds are supported.
wrapped by python:
pt_to = Geometry.BarycentricTransform(pt_from, t1a, t1b, t1c, t2a, t1b, t1c)
NOTE:
- moved some barycentric weight functions out of projection painting into the math lib.
- ended up making some of the math functions use const args.
TODO:
- support exceptional cases. zero area tries and similar.
* Increase epsilon for intersection a bit more, ortho view + small
faces are problematic.
* Fix a redraw issue with one partial redraw too much at the end of
the stroke.
* Temporary workaround for sculpt not working well with small polygons,
still seems to be some issues, but can at least paint now.
* Small optimization avoiding local function variable aliasing.
adjust epsilon value for isect_ray_tri_v3()
from the comment...
/* note: these values were 0.000001 in 2.4x but for projection snapping on
* a human head (1BU==1m), subsurf level 2, this gave many errors */
- 0.000001 -> 0.00000001
* Fix remaining issues before conversion.
* Inline various vector functions, currently enabled for all platforms.
I expect this to work in GCC/MSVC at least, if other platforms don't
support it, #ifdef's can be added.
