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Py API: default arg for location_3d_to_region_2d

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This function could return None for points behind the view,
note this in the doc-string and add an optional fallback argument.
This commit is contained in:
Campbell Barton 2015-04-13 14:35:16 +10:00
parent e688ba0304
commit 9b359c1592
1 changed files with 5 additions and 3 deletions
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8
release/scripts/modules/bpy_extras/view3d_utils.py
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@ -160,7 +160,7 @@ def region_2d_to_location_3d(region, rv3d, coord, depth_location):
)[0] )[0]
def location_3d_to_region_2d(region, rv3d, coord): def location_3d_to_region_2d(region, rv3d, coord, default=None):
""" """
Return the *region* relative 2d location of a 3d position. Return the *region* relative 2d location of a 3d position.
@ -170,8 +170,10 @@ def location_3d_to_region_2d(region, rv3d, coord):
:type rv3d: :class:`bpy.types.RegionView3D` :type rv3d: :class:`bpy.types.RegionView3D`
:arg coord: 3d worldspace location. :arg coord: 3d worldspace location.
:type coord: 3d vector :type coord: 3d vector
:arg default: Return this value if ``coord``
is behind the origin of a perspective view.
:return: 2d location :return: 2d location
:rtype: :class:`mathutils.Vector` :rtype: :class:`mathutils.Vector` or ``default`` argument.
""" """
from mathutils import Vector from mathutils import Vector
@ -184,4 +186,4 @@ def location_3d_to_region_2d(region, rv3d, coord):
height_half + height_half * (prj.y / prj.w), height_half + height_half * (prj.y / prj.w),
)) ))
else: else:
return None return default