/usr/share/pyshared/pyepl/vr/geometry.py is in python-pyepl 1.1.0-3build3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Copyright (C) 2003-2005 Michael J. Kahana
# Authors: Ian Schleifer, Per Sederberg, Aaron Geller, Josh Jacobs
# URL: http://memory.psych.upenn.edu/programming/pyepl
#
# Distributed under the terms of the GNU Lesser General Public License
# (LGPL). See the license.txt that came with this file.
"""
"""
import math
class Vector:
"""
"""
def __init__(self, x, y, z):
"""
"""
self.x = x
self.y = y
self.z = z
def __getitem__(self, index):
"""
"""
if index == 0:
return self.x
if index == 1:
return self.y
if index == 2:
return self.z
raise IndexError, "Vector objects can only be indexed with 0, 1, or 2."
def length(self):
"""
"""
return math.sqrt(self.x * self.x + self.y * self.y + self.z * self.z)
def __add__(self, other):
"""
"""
return Vector(self.x + other.x, self.y + other.y, self.z + other.z)
def __sub__(self, other):
"""
"""
return Vector(self.x - other.x, self.y - other.y, self.z - other.z)
def __mul__(self, other):
"""
"""
if isinstance(other, Vector):
return self.x * other.x + self.y * other.x + self.z * other.z
return Vector(self.x * other, self.y * other, self.z * other)
def __neg__(self):
"""
"""
return Vector(-self.x, -self.y, -self.z)
def __pos__(self):
"""
"""
return self
class VRWorld:
"""
"""
def __init__(self):
"""
"""
self.ambient = (0.6, 0.6, 0.6)
self.startsector = None
self.startpos = None
self.sectors = []
def getXML(self):
"""
"""
if self.startsector:
start = """<start><sector>%s</sector><position x="%s" y="%s" z="%s" /></start>""" % (self.startsector.name, self.startpos[0], self.startpos[1], self.startpos[2])
else:
start = ""
settings = """<ambient red="%s" green="%s" blue="%s" />""" % self.ambient
p = {}
m = {}
for x in self.sectors:
p.update(x.getPlugins())
m.update(x.getFactories())
plugins = "".join(map(lambda plug: """<plugin name="%s">%s</plugin>""" % plug, p.iteritems()))
meshfacts = "".join(map(lambda mf: """<meshfact name="%s">%s</meshfact>""" % mf, m.iteritems()))
sects = "".join(map(lambda s: s.getXMLBody(), self.sectors))
return """<world><settings>%s</settings><plugins>%s</plugins>%s%s<renderpriorities><priority name="sky"><level>1</level><sort>NONE</sort></priority><priority name="wall"><level>2</level><sort>NONE</sort></priority><priority name="object"><level>3</level><sort>BACK2FRONT</sort></priority><priority name="alpha"><level>4</level><sort>BACK2FRONT</sort></priority></renderpriorities>%s</world>""" % (settings, plugins, start, meshfacts, sects)
def setAmbientColor(self, r, g, b):
"""
"""
self.ambient = (r, g, b)
def setStartingPosition(self, sector, position):
"""
"""
self.startsector = sector
self.startpos = position
def newSector(self, name = "room"):
"""
"""
sector = Sector(name)
self.sectors.append(sector)
return sector
class Sector:
"""
"""
def __init__(self, name):
"""
"""
self.name = name
self.elements = []
def getXMLBody(self):
"""
"""
return """<sector name="%s">%s</sector>""" % (self.name, "".join(map(lambda x: x.getXMLBody(), self.elements)))
def getPlugins(self):
"""
"""
p = {}
for x in self.elements:
p.update(x.getPlugins())
return p
def getFactories(self):
"""
"""
f = {}
for x in self.elements:
f.update(x.getFactories())
return f
def addSky(self, image, radius = 100):
"""
"""
sky = Sky(image, radius)
self.elements.append(sky)
return sky
def addMesh(self, name):
"""
"""
mesh = Mesh(name)
self.elements.append(mesh)
return mesh
def addFloorBox(self, floorimage, xsize, ysize, wallimage, wallheight, floortexlen = 6):
"""
"""
floorbox = FloorBox(floorimage, xsize, ysize, wallimage, wallheight, floortexlen)
self.elements.append(floorbox)
return floorbox
def addSimpleBuildingBox(self, name, image, width, height, position, roofimage = None, rooftexlen = 6.0):
"""
"""
bb = SimpleBuildingBox(name, image, width, height, position, roofimage, rooftexlen)
self.elements.append(bb)
return bb
def addSimpleSprite(self, name, image, width, height, position):
"""
"""
sprite = SimpleSprite(name, image, width, height, position)
self.elements.append(sprite)
return sprite
class Sky:
"""
"""
def __init__(self, image, radius):
"""
"""
self.radius = radius
self.imagepath = image.filename[1:]
def getXMLBody(self):
"""
"""
return """<meshobj name="skydome"><plugin>ball</plugin><params><factory>skydome</factory><radius x="%s" y="%s" z="%s" /><numrim>12</numrim><toponly>yes</toponly><reversed>yes</reversed><material>%s</material><lighting>no</lighting><color red="1" green="1" blue="1" /></params><znone /><priority>sky</priority><camera /></meshobj>""" % (self.radius, self.radius, self.radius, self.imagepath)
def getPlugins(self):
"""
"""
return {"ball": "crystalspace.mesh.loader.ball", "ballFact": "crystalspace.mesh.loader.factory.ball"}
def getFactories(self):
"""
"""
return {"skydome": "<plugin>ballFact</plugin><params />"}
class Mesh:
"""
"""
def __init__(self, name, priority = "object"):
"""
"""
self.name = name
self.priority = priority
self.verteces = []
self.polygons = []
self.current_texture = None
self.current_texlen = 6.0
def getXMLBody(self):
"""
"""
verts = "".join(map(lambda v: """<v x="%s" y="%s" z="%s" />""" % (v[0], v[1], v[2]), self.verteces))
texture = None
texlen = None
polys = []
for name, points, desired_texture, desired_texlen, options in self.polygons:
if texture != desired_texture:
texturemod = """<material>%s</material>""" % desired_texture
texture = desired_texture
if texlen != desired_texlen:
texlenmod = """<texlen>%s</texlen>""" % desired_texlen
texlen = desired_texlen
opts = []
if options.has_key("orig"):
opts.append("""<orig x="%s" y="%s" z="%s" />""" % options["orig"])
if options.has_key("first"):
opts.append("""<first x="%s" y="%s" z="%s" />""" % options["first"])
if options.has_key("second"):
opts.append("""<second x="%s" y="%s" z="%s" />""" % options["second"])
if options.has_key("firstlen"):
opts.append("""<firstlen>%s</firstlen>""" % options["firstlen"])
if options.has_key("secondlen"):
opts.append("""<secondlen>%s</secondlen>""" % options["secondlen"])
if len(opts):
texmap = """<texmap>%s</texmap>""" % "".join(opts)
else:
texmap = ""
points = "".join(map(lambda p: """<v>%s</v>""" % p, points))
polys.append("""%s%s<p name="%s">%s%s</p>""" % (texturemod, texlenmod, name, texmap, points))
polys = "".join(polys)
return """<meshobj name="%s"><zfill /><plugin>thing</plugin><params>%s%s</params><priority>%s</priority></meshobj>""" % (self.name, verts, polys, self.priority)
def getPlugins(self):
"""
"""
return {"thing": "crystalspace.mesh.loader.thing"}
def getFactories(self):
"""
"""
return {}
def vertex(self, x, y, z):
"""
"""
r = len(self.verteces)
self.verteces.append((x, y, z))
return r
def setTexture(self, image = None, texlen = None):
"""
"""
if image:
self.current_texture = image.filename[1:]
if texlen:
self.current_texlen = texlen
def addPolygon(self, name, *verteces, **options):
"""
"""
self.polygons.append((name, verteces, self.current_texture, self.current_texlen, options))
def merge(self, other):
"""
"""
vertshift = len(self.verteces)
self.verteces.extend(other.verteces)
for name, verteces, self.current_texture, self.current_texlen, options in other.polygons:
self.polygons.append((name, map(lambda x: x + vertshift, verteces), self.current_texture, self.current_texlen, options))
class FloorBox(Mesh):
"""
"""
def __init__(self, floorimage, xsize, zsize, wallimage, wallheight, floortexlen):
"""
"""
Mesh.__init__(self, "floorbox", priority = "wall")
halfx = xsize * 0.5
halfz = zsize * 0.5
floorlowerleft = self.vertex(-halfx, 0, -halfz)
floorlowerright = self.vertex(-halfx, 0, halfz)
floorupperright = self.vertex(halfx, 0, halfz)
floorupperleft = self.vertex(halfx, 0, -halfz)
rooflowerleft = self.vertex(-halfx, wallheight, -halfz)
rooflowerright = self.vertex(-halfx, wallheight, halfz)
roofupperright = self.vertex(halfx, wallheight, halfz)
roofupperleft = self.vertex(halfx, wallheight, -halfz)
self.setTexture(wallimage, texlen = wallheight)
self.addPolygon("front", floorupperleft, floorupperright, roofupperright, roofupperleft)
self.addPolygon("left", floorlowerleft, floorupperleft, roofupperleft, rooflowerleft)
self.addPolygon("rear", floorlowerright, floorlowerleft, rooflowerleft, rooflowerright)
self.addPolygon("right", floorupperright, floorlowerright, rooflowerright, roofupperright)
self.setTexture(floorimage, texlen = floortexlen)
self.addPolygon("floor", floorlowerleft, floorlowerright, floorupperright, floorupperleft)
class SimpleBuildingBox(Mesh):
"""
"""
def __init__(self, name, image, width, height, position, roofimage = None, rooftexlen = 6.0, tilewalls = False):
"""
"""
Mesh.__init__(self, name)
halfwidth = width * 0.5
highx = position[0] + halfwidth
highz = position[2] + halfwidth
lowx = position[0] - halfwidth
lowz = position[2] - halfwidth
lowy = position[1]
highy = position[1] + height
floorlowerleft = self.vertex(lowx, lowy, lowz)
floorlowerright = self.vertex(lowx, lowy, highz)
floorupperright = self.vertex(highx, lowy, highz)
floorupperleft = self.vertex(highx, lowy, lowz)
rooflowerleft = self.vertex(lowx, highy, lowz)
rooflowerright = self.vertex(lowx, highy, highz)
roofupperright = self.vertex(highx, highy, highz)
roofupperleft = self.vertex(highx, highy, lowz)
self.setTexture(image)
if tilewalls:
self.addPolygon("front", floorupperright, floorupperleft, roofupperleft, roofupperright)
self.addPolygon("left", rooflowerleft, roofupperleft, floorupperleft, floorlowerleft)
self.addPolygon("rear", rooflowerright, rooflowerleft, floorlowerleft, floorlowerright)
self.addPolygon("right", roofupperright, rooflowerright, floorlowerright, floorupperright)
else:
self.addPolygon("front", floorupperright, floorupperleft, roofupperleft, roofupperright,
orig = (highx, highy, highz), first = (highx, highy, lowz), second = (highx, lowy, highz),
firstlen = -width, secondlen = height)
self.addPolygon("left", rooflowerleft, roofupperleft, floorupperleft, floorlowerleft,
orig = (highx, highy, lowz), first = (lowx, highy, lowz), second = (highx, lowy, lowz),
firstlen = -width, secondlen = height)
self.addPolygon("rear", rooflowerright, rooflowerleft, floorlowerleft, floorlowerright,
orig = (lowx, highy, lowz), first = (lowx, highy, highz), second = (lowx, lowy, lowz),
firstlen = -width, secondlen = height)
self.addPolygon("right", roofupperright, rooflowerright, floorlowerright, floorupperright,
orig = (lowx, highy, highz), first = (highx, highy, highz), second = (lowx, lowy, highz),
firstlen = -width, secondlen = height)
if roofimage:
self.setTexture(roofimage, texlen = rooftexlen)
self.addPolygon("roof", rooflowerleft, rooflowerright, roofupperright, roofupperleft)
class SimpleSprite:
"""
"""
def __init__(self, name, image, width, height, position):
"""
"""
self.name = name
self.imagepath = image.filename[1:]
self.width = width
self.height = height
self.position = position
def getXMLBody(self):
"""
"""
halfwidth = self.width * 0.5
return """<meshobj name="%s"><zfill /><plugin>sprite</plugin><params><factory>spriteMeshFact</factory><material>%s</material><lighting>no</lighting><v x="%s" y="%s" /><v x="%s" y="%s" /><v x="%s" y="0" /><v x="%s" y="0" /><uv u="0" v="0" /><uv u="1" v="0" /><uv u="1" v="1" /><uv u="0" v="1" /><color red="1" green="1" blue="1" /><color red="1" green="1" blue="1" /><color red="1" green="1" blue="1" /><color red="1" green="1" blue="1" /></params><move><v x="%s" y="%s" z="%s" /></move><priority>object</priority></meshobj>""" % (self.name, self.imagepath, -halfwidth, self.height, halfwidth, self.height, halfwidth, -halfwidth, self.position[0], self.position[1], self.position[2])
def getPlugins(self):
"""
"""
return {"sprite": "crystalspace.mesh.loader.sprite.2d", "spriteFact": "crystalspace.mesh.loader.factory.sprite.2d"}
def getFactories(self):
"""
"""
return {"spriteMeshFact": "<plugin>spriteFact</plugin><params />"}
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