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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 import Vector
from bpy_extras.io_utils import create_derived_objects, free_derived_objects
# https://developer.valvesoftware.com/wiki/MAP_file_format
def fmt3(vec3):
return '%f %f %f'%(vec3.x, vec3.y, vec3.z)
#return ' '.join(['%%.%df']*3)%tuple([precision]*3)%(vec3.x, vec3.y, vec3.z)
def fmt_plane(plane3dots):
return '( %s ) ( %s ) ( %s )'%(fmt3(plane3dots[0]), fmt3(plane3dots[1]), fmt3(plane3dots[2]))
def fmt_tex(tev, toff):
return '[ %s %.1f ]'%(fmt3(tev), toff)
def fmt_face(plane3dots, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY):
return '%s %s %s %s %s'%(
fmt_plane(plane3dots), tename,
fmt_tex(tev1, teoff1),
fmt_tex(tev2, teoff2),
fmt3(Vector([rot, scaleX, scaleY]))
)
def output_entity_start(dict_props, fh):
fh.write('{\n')
for k,v in dict_props.items():
fh.write('\t%-16s "%s"\n'%('"'+k+'"',v))
def output_brush_start(fh):
fh.write('\t{\n')
def output_brush_face(plane3dots, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY, fh):
fh.write('\t\t%s\n'%fmt_face(plane3dots, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY))
def output_brush_end(fh):
fh.write('\t}\n')
def output_entity_end(fh):
fh.write('}\n')
def normal(plane3dots):
v01 = plane3dots[1] - plane3dots[0]
v02 = plane3dots[2] - plane3dots[0]
n = v01.cross(v02)
n.normalize()
return n
def flip(plane3dots):
tmp = plane3dots[2]
plane3dots[2] = plane3dots[1]
plane3dots[1] = tmp
def debug1(o=''):
#print(o)
return None
def debug2(fano,plane3dots):
fano.normalize()
debug1(fano)
v01 = plane3dots[1] - plane3dots[0]
v02 = plane3dots[2] - plane3dots[0]
n = v01.cross(v02)
n.normalize()
debug1(n)
debug1(fano-n)
debug1()
def save(operator, context, filepath, worldspawn_props, blender_to_map_scale_factor, use_selection=True):
"""Save the Blender scene to a map file."""
# Make sure that data we want to access is not out of sync because edit mode is in use
if bpy.ops.object.mode_set.poll():
bpy.ops.object.mode_set(mode='OBJECT')
sc = context.scene
if use_selection:
objects = list(ob for ob in sc.objects if ob.is_visible(sc) and ob.type == 'MESH' and ob.data and ob.select)
else:
objects = list(ob for ob in sc.objects if ob.is_visible(sc) and ob.type == 'MESH' and ob.data)
# Simplify each mesh once (a mesh could be used by multiple objects)
for mesh in set([ob.data for ob in objects]):
bm = bmesh.new()
bm.from_mesh(mesh)
bmesh.ops.remove_doubles(bm, verts=bm.verts, dist=1/blender_to_map_scale_factor)
bmesh.ops.holes_fill(bm, edges=bm.edges) #, sides=0
bmesh.ops.connect_verts_concave(bm, faces=bm.faces)
bmesh.ops.connect_verts_nonplanar(bm, faces=bm.faces) #, angle_limit=0.0
bmesh.ops.planar_faces(bm, faces=bm.faces)
bmesh.ops.recalc_face_normals(bm, faces=bm.faces)
bm.to_mesh(mesh)
bm.free()
# Iterate over objects, make computations (set of cross planes) and print them as worldspawn entity brushes
with open(filepath, 'w') as fh:
output_entity_start(worldspawn_props, fh)
for ob in objects:
debug1(ob.name)
mat_to_map = ob.matrix_world * blender_to_map_scale_factor
mesh = ob.data
mesh.update(calc_tessface=True)
for fa in mesh.tessfaces:
output_brush_start(fh)
tename='AAATRIGGER'
tev1 = Vector([1,0,0])
teoff1 = 0
tev2 = Vector([0,-1,0])
teoff2 = 0
rot = 0
scaleX = 1
scaleY = 1
# Make a brush in .map for each face in blender
# Brushes are (strangely) defined as a set of intersecting planes in .map
# Planes are defined with 3 3D points belonging to it
# "They must be in a clockwise order when facing the outside of the plane
# that is, the side that points outwards from the brush"
brfront = [None,None,None]
brback = [None,None,None]
# For now this code take the 3 first vectices of the face
# TODO This can cause troubles if they are colinear or if they have narrow angle
for i in [0,1,2]:
vi = mesh.vertices[fa.vertices[i]].co
# front plane in brush will match face in blender (in global coords, with a scale factor)
brfront[i] = mat_to_map * vi
# back plane will be 1 (map) unit inside (normal facing outside, so substract it)
brback[i] = mat_to_map * ( vi - fa.normal / blender_to_map_scale_factor )
# Check if coords are in clockwise order, else flip them
fano = mat_to_map.to_3x3() * fa.normal
frno = normal(brfront)
epsilon = 0.1
if ( (fano - frno).length_squared > epsilon ):
flip(brfront)
debug1('Front Flipped')
else:
flip(brback)
debug1('Back Flipped')
debug2(mat_to_map.to_3x3() * fa.normal, brfront)
debug2(mat_to_map.to_3x3() *-fa.normal, brback)
output_brush_face(brfront, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY, fh)
output_brush_face(brback, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY, fh)
# make 1 side face in brush per blender edge
for i,j in fa.edge_keys:
brside = [None,None,None]
brside[0] = mat_to_map * ( mesh.vertices[i].co )
brside[1] = mat_to_map * ( mesh.vertices[j].co )
brside[2] = mat_to_map * ( mesh.vertices[j].co - fa.normal )
# Let have a plane define by a point A and a normal n
# Let M a point in space. M is on the plane if AM.n = 0
# Now we want to know if the "side" face normal is poiting outwards of the brush (<0)
# Take A = side[0], M = fa.center (that is inside the brush), n = normal(side)
if ( (mat_to_map * fa.center - brside[0]).dot(normal(brside)) < 0):
flip(brside)
debug1('Side Flipped')
debug1(normal(brside))
output_brush_face(brside, tename, tev1, teoff1, tev2, teoff2, rot, scaleX, scaleY, fh)
output_brush_end(fh)
# endfor fa in mesh.tessfaces:
output_entity_end(fh)
return {'FINISHED'}
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