mirror of
https://github.com/blender/blender-addons.git
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78 lines
2.0 KiB
Python
78 lines
2.0 KiB
Python
# -*- coding: utf-8 -*-
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# ##### BEGIN GPL LICENSE BLOCK #####
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# ##### END GPL LICENSE BLOCK #####
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'''
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misc_util.py
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Miscellaneous helper methods.
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'''
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import bpy
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from mathutils import Vector, Matrix
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class BlenderFake:
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@classmethod
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def forceUpdate(cls):
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if bpy.context.mode == 'EDIT_MESH':
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bpy.ops.object.mode_set(mode='OBJECT')
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bpy.ops.object.mode_set(mode='EDIT')
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@classmethod
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def forceRedraw(cls):
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CursorAccess.setCursor(CursorAccess.getCursor())
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# Converts 3D coordinates in a 3DRegion
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# into 2D screen coordinates for that region.
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# Borrowed from Buerbaum Martin (Pontiac)
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def region3d_get_2d_coordinates(context, loc_3d):
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# Get screen information
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mid_x = context.region.width / 2.0
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mid_y = context.region.height / 2.0
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width = context.region.width
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height = context.region.height
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# Get matrices
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view_mat = context.space_data.region_3d.perspective_matrix
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total_mat = view_mat
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# order is important
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vec = Vector((loc_3d[0], loc_3d[1], loc_3d[2], 1.0)) * total_mat
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# dehomogenise
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vec = Vector((
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vec[0] / vec[3],
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vec[1] / vec[3],
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vec[2] / vec[3]))
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x = int(mid_x + vec[0] * width / 2.0)
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y = int(mid_y + vec[1] * height / 2.0)
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z = vec[2]
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return Vector((x, y, z))
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