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# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
import bpy
import bmesh
from mathutils.geometry import area_tri
from math import sqrt
from math import pow
def setImageRes(object):
global pixels
mat = object.material_slots[object.active_material_index].material
if mat.node_tree.nodes.active.type in ["TEX_IMAGE"]:
pixels = [mat.node_tree.nodes.active.image.size[0] ,mat.node_tree.nodes.active.image.size[1] ]
return(True)
else:
print("Please select image node first")
return(False)
def makeTessellate(actObj):
global bm_tess
ob = actObj
me = ob.data
bm = bmesh.new()
bm.from_mesh(me)
bmesh.ops.triangulate(bm, faces=bm.faces[:])
bm_tess = bpy.data.meshes.new("Tris")
bm.to_mesh(bm_tess)
def calcArea():
global totalArea
totalArea = 0
for poly in bm_tess.polygons:
uno = bm_tess.uv_layers.active.data[poly.loop_indices[0]].uv
dos = bm_tess.uv_layers.active.data[poly.loop_indices[1]].uv
tres = bm_tess.uv_layers.active.data[poly.loop_indices[2]].uv
area = area_tri(uno, dos, tres)
totalArea += area
bpy.data.meshes.remove(
bm_tess,
do_unlink=True,
do_id_user=True,
do_ui_user=True)
def calcMeshArea(ob):
global GlobLog
polyArea = 0
for poly in ob.data.polygons:
polyArea += poly.area
ta = "UvGain: %s%s || " % (round(totalArea * 100),"%")
ma = "MeshArea: %s || " % (polyArea)
pg = "PixelsGain: %s || " % (round(totalArea * (pixels[0] * pixels[1])))
pl = "PixelsLost: %s || " % ((pixels[0]*pixels[1]) - round(totalArea * (pixels[0] * pixels[1])))
tx = "Texel: %s pix/meter" % (round(sqrt(totalArea * pixels[0] * pixels[1] / polyArea)))
GlobLog = ta+ma+pg+pl+tx
class uvStats(bpy.types.Operator):
"""Print Uv Stats"""
bl_idname = "mesh.print_uv_stats"
bl_label = "Print Uv Stats"
bl_options = {'REGISTER'}
@classmethod
def poll(cls, context):
return context.active_object is not None
def execute(self, context):
if round(
bpy.context.object.scale.x,
2) == 1 and round(
bpy.context.object.scale.y,
2) == 1 and round(
bpy.context.object.scale.x,
2) == 1:
if setImageRes(bpy.context.object):
makeTessellate(bpy.context.object)
calcArea()
calcMeshArea(bpy.context.object)
else:
print("Warning: Non Uniform Scale Object")
copyOb = bpy.context.object.copy()
copyMe = bpy.context.object.data.copy()
bpy.context.scene.collection.objects.link(copyOb)
copyOb.data = copyMe
bpy.ops.object.select_all(action="DESELECT")
copyOb.select_set(1)
bpy.ops.object.transform_apply()
if setImageRes(copyOb):
makeTessellate(copyOb)
calcArea()
calcMeshArea(copyOb)
bpy.data.objects.remove(copyOb)
bpy.data.meshes.remove(copyMe)
self.report({'INFO'}, GlobLog)
return {'FINISHED'}