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+#########################################################################
+# Copyright (C) 2011 Tavian Barnes <tavianator@tavianator.com> #
+# #
+# This file is part of The Dimension Python Module. #
+# #
+# The Dimension Python Module is free software; you can redistribute it #
+# and/or modify it under the terms of the GNU Lesser General Public #
+# License as published by the Free Software Foundation; either version #
+# 3 of the License, or (at your option) any later version. #
+# #
+# The Dimension Python Module 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 Lesser General Public License for more details. #
+# #
+# You should have received a copy of the GNU Lesser General Public #
+# License along with this program. If not, see #
+# <http://www.gnu.org/licenses/>. #
+#########################################################################
+
+"""
+Dimension: a high-performance photo-realistic 3D renderer.
+"""
+
+import os
+
+###########
+# Helpers #
+###########
+
+cdef _raise_OSError(filename = None):
+ if filename is None:
+ raise OSError(errno, os.strerror(errno))
+ else:
+ raise OSError(errno, os.strerror(errno), filename)
+
+###########
+# Globals #
+###########
+
+def die_on_warnings(always_die):
+ """Whether to treat Dimension warnings as errors."""
+ dmnsn_die_on_warnings(always_die)
+
+def terminal_width():
+ """Return the width of the terminal, if present."""
+ return dmnsn_terminal_width()
+
+###########
+# Futures #
+###########
+
+cdef class Future:
+ cdef dmnsn_future *_future
+ cdef _finalizer
+
+ def __cinit__(self):
+ self._future = NULL
+ self._finalizer = None
+
+ def __init__(self):
+ raise RuntimeError("attempt to create a Future object.")
+
+ def __dealloc__(self):
+ if self._future != NULL:
+ self.join()
+
+ def join(self):
+ self._assert_unfinished()
+ try:
+ if dmnsn_future_join(self._future) != 0:
+ raise RuntimeError("background task failed.")
+ if self._finalizer is not None:
+ self._finalizer()
+ finally:
+ self._future = NULL
+
+ def cancel(self):
+ self._assert_unfinished()
+ dmnsn_future_cancel(self._future)
+
+ def progress(self):
+ self._assert_unfinished()
+ return dmnsn_future_progress(self._future)
+
+ def wait(self, progress):
+ self._assert_unfinished()
+ dmnsn_future_wait(self._future, progress)
+
+ def _assert_unfinished(self):
+ if self._future == NULL:
+ raise RuntimeError("background task finished.")
+
+cdef Future _Future(dmnsn_future *future):
+ """Wrap a Future object around an existing dmnsn_future *."""
+ cdef Future self = Future.__new__(Future)
+ self._future = future
+ return self
+
+##########
+# Timers #
+##########
+
+cdef class Timer:
+ """A timer for Dimension tasks."""
+ cdef dmnsn_timer _timer
+ cdef bool _stopped
+
+ def __init__(self):
+ """
+ Create a Timer.
+
+ Timing starts as soon as the object is created.
+ """
+ self._stopped = False
+ dmnsn_timer_start(&self._timer)
+
+ def stop(self):
+ """Stop the Timer."""
+ if self._stopped:
+ raise RuntimeError("timer already stopped.")
+
+ dmnsn_timer_stop(&self._timer)
+ self._stopped = True
+
+ property real:
+ """Real (wall clock) time."""
+ def __get__(self):
+ self._assert_stopped()
+ return self._timer.real
+ property user:
+ """User (CPU) time."""
+ def __get__(self):
+ self._assert_stopped()
+ return self._timer.user
+ property system:
+ """System time."""
+ def __get__(self):
+ self._assert_stopped()
+ return self._timer.system
+
+ def __str__(self):
+ self._assert_stopped()
+ return "%.2fs (user: %.2fs; system: %.2fs)" % \
+ (self._timer.real, self._timer.user, self._timer.system)
+
+ def _assert_stopped(self):
+ if not self._stopped:
+ raise RuntimeError("timer still running.")
+
+cdef Timer _Timer(dmnsn_timer timer):
+ """Wrap a Timer object around a dmnsn_timer."""
+ cdef Timer self = Timer.__new__(Timer)
+ self._timer = timer
+ self._stopped = True
+ return self
+
+############
+# Geometry #
+############
+
+cdef class Vector:
+ """A vector (or point or pseudovector) in 3D space."""
+ cdef dmnsn_vector _v
+
+ def __init__(self, *args, **kwargs):
+ """
+ Create a Vector.
+
+ Keyword arguments:
+ x -- The x coordinate
+ y -- The y coordinate
+ z -- The z coordinate
+
+ Alternatively, you can pass another Vector, the value 0, or a tuple or other
+ sequence (x, y, z).
+ """
+ if len(args) == 1:
+ if isinstance(args[0], Vector):
+ self._v = (<Vector>args[0])._v
+ elif hasattr(args[0], "__iter__"): # Faster than try: ... except:
+ self._real_init(*args[0])
+ elif args[0] == 0:
+ self._v = dmnsn_zero
+ else:
+ raise TypeError("expected a sequence or 0")
+ else:
+ self._real_init(*args, **kwargs)
+
+ def _real_init(self, double x, double y, double z):
+ self._v = dmnsn_new_vector(x, y, z)
+
+ property x:
+ """The x coordinate."""
+ def __get__(self):
+ return self._v.x
+ property y:
+ """The y coordinate."""
+ def __get__(self):
+ return self._v.y
+ property z:
+ """The z coordinate."""
+ def __get__(self):
+ return self._v.z
+
+ def __pos__(self):
+ return self
+ def __neg__(self):
+ return _Vector(dmnsn_vector_negate(self._v))
+ def __nonzero__(self):
+ return dmnsn_vector_norm(self._v) >= dmnsn_epsilon
+
+ def __add__(lhs, rhs):
+ return _Vector(dmnsn_vector_add(Vector(lhs)._v, Vector(rhs)._v))
+ def __sub__(lhs, rhs):
+ return _Vector(dmnsn_vector_sub(Vector(lhs)._v, Vector(rhs)._v))
+ def __mul__(lhs, rhs):
+ if isinstance(lhs, Vector):
+ return _Vector(dmnsn_vector_mul(rhs, (<Vector>lhs)._v))
+ else:
+ return _Vector(dmnsn_vector_mul(lhs, (<Vector?>rhs)._v))
+ def __truediv__(Vector lhs not None, double rhs):
+ return _Vector(dmnsn_vector_div(lhs._v, rhs))
+
+ def __richcmp__(lhs, rhs, int op):
+ equal = (Vector(lhs) - Vector(rhs)).norm() < dmnsn_epsilon
+ if op == 2: # ==
+ return equal
+ elif op == 3: # !=
+ return not equal
+ else:
+ return NotImplemented
+
+ def norm(self):
+ """Return the magnitude of the vector."""
+ return dmnsn_vector_norm(self._v)
+ def normalized(self):
+ """Return the direction of the vector."""
+ return _Vector(dmnsn_vector_normalized(self._v))
+
+ def __repr__(self):
+ return "dimension.Vector(%r, %r, %r)" % (self.x, self.y, self.z)
+
+ def __str__(self):
+ return "<%s, %s, %s>" % (self.x, self.y, self.z)
+
+cdef Vector _Vector(dmnsn_vector v):
+ """Wrap a Vector object around a dmnsn_vector."""
+ cdef Vector self = Vector.__new__(Vector)
+ self._v = v
+ return self
+
+def cross(Vector lhs not None, Vector rhs not None):
+ """Vector cross product."""
+ return _Vector(dmnsn_vector_cross(lhs._v, rhs._v))
+def dot(Vector lhs not None, Vector rhs not None):
+ """Vector dot product."""
+ return dmnsn_vector_dot(lhs._v, rhs._v)
+def proj(Vector u not None, Vector d not None):
+ """Vector projection (of u onto d)."""
+ return _Vector(dmnsn_vector_proj(u._v, d._v))
+
+X = _Vector(dmnsn_x)
+Y = _Vector(dmnsn_y)
+Z = _Vector(dmnsn_z)
+
+cdef class Matrix:
+ """An affine transformation matrix."""
+ cdef dmnsn_matrix _m
+
+ def __init__(self,
+ double a1, double a2, double a3, double a4,
+ double b1, double b2, double b3, double b4,
+ double c1, double c2, double c3, double c4):
+ """Create a Matrix."""
+ self._m = dmnsn_new_matrix(a1, a2, a3, a4,
+ b1, b2, b3, b4,
+ c1, c2, c3, c4)
+
+ def __nonzero__(self):
+ cdef double sum = 0.0
+ for i in range(3):
+ for j in range(4):
+ sum += self._m.n[i][j]
+ return sqrt(sum) >= dmnsn_epsilon
+
+ def __mul__(Matrix lhs not None, rhs):
+ if isinstance(rhs, Matrix):
+ return _Matrix(dmnsn_matrix_mul(lhs._m, (<Matrix>rhs)._m))
+ else:
+ return _Vector(dmnsn_transform_point(lhs._m, (<Vector?>rhs)._v))
+
+ def __richcmp__(Matrix lhs not None, Matrix rhs not None, int op):
+ cdef double sum = 0.0
+ for i in range(3):
+ for j in range(4):
+ diff = lhs._m.n[i][j] - rhs._m.n[i][j]
+ sum += diff*diff
+ equal = sqrt(sum) < dmnsn_epsilon
+
+ if op == 2: # ==
+ return equal
+ elif op == 3: # !=
+ return not equal
+ else:
+ return NotImplemented
+
+ def inverse(self):
+ """Return the inverse of a matrix."""
+ return _Matrix(dmnsn_matrix_inverse(self._m))
+
+ def __repr__(self):
+ return \
+ "dimension.Matrix(%r, %r, %r, %r, %r, %r, %r, %r, %r, %r, %r, %r)" % \
+ (self._m.n[0][0], self._m.n[0][1], self._m.n[0][2], self._m.n[0][3],
+ self._m.n[1][0], self._m.n[1][1], self._m.n[1][2], self._m.n[1][3],
+ self._m.n[2][0], self._m.n[2][1], self._m.n[2][2], self._m.n[2][3])
+
+ def __str__(self):
+ return \
+ "\n[%s\t%s\t%s\t%s]" \
+ "\n[%s\t%s\t%s\t%s]" \
+ "\n[%s\t%s\t%s\t%s]" \
+ "\n[%s\t%s\t%s\t%s]" %\
+ (self._m.n[0][0], self._m.n[0][1], self._m.n[0][2], self._m.n[0][3],
+ self._m.n[1][0], self._m.n[1][1], self._m.n[1][2], self._m.n[1][3],
+ self._m.n[2][0], self._m.n[2][1], self._m.n[2][2], self._m.n[2][3],
+ 0.0, 0.0, 0.0, 1.0)
+
+cdef Matrix _Matrix(dmnsn_matrix m):
+ """Wrap a Matrix object around a dmnsn_matrix."""
+ cdef Matrix self = Matrix.__new__(Matrix)
+ self._m = m
+ return self
+
+def scale(*args, **kwargs):
+ """
+ Return a scale transformation.
+
+ Accepts the same arguments that Vector(...) does. The transformation scales
+ by a factor of x in the x direction, y in the y direction, and z in the z
+ direction. In particular, this means that scale(2*X) is probably a mistake,
+ as the y and z coordinates will disappear.
+
+ Alternatively, a single argument may be passed, which specifies the scaling
+ factor in every component.
+ """
+ cdef Vector s
+ try:
+ s = Vector(*args, **kwargs)
+ except:
+ s = args[0]*(X + Y + Z)
+ return _Matrix(dmnsn_scale_matrix(s._v))
+def translate(*args, **kwargs):
+ """
+ Return a translation.
+
+ Accepts the same arguments that Vector(...) does.
+ """
+ return _Matrix(dmnsn_translation_matrix(Vector(*args, **kwargs)._v))
+def rotate(*args, **kwargs):
+ """
+ Return a rotation.
+
+ Accepts the same arguments that Vector(...) does. theta.norm() is the left-
+ handed angle of rotation, and theta.normalized() is the axis of rotation.
+ theta is specified in degrees.
+ """
+ cdef Vector rad = dmnsn_radians(1.0)*Vector(*args, **kwargs)
+ return _Matrix(dmnsn_rotation_matrix(rad._v))
+
+cdef class _Transformable:
+ def scale(self, *args, **kwargs):
+ """Scale. Equivalent to self.transform(scale(...))."""
+ return self.transform(scale(*args, **kwargs))
+ def translate(self, *args, **kwargs):
+ """Translate. Equivalent to self.transform(translate(...))."""
+ return self.transform(translate(*args, **kwargs))
+ def rotate(self, *args, **kwargs):
+ """Rotate. Equivalent to self.transform(rotate(...))."""
+ return self.transform(rotate(*args, **kwargs))
+
+##########
+# Colors #
+##########
+
+cdef class Color:
+ """
+ An sRGB color.
+
+ Note that 0.5*White == Color(0.5, 0.5, 0.5), which is not technically a half-
+ intensity white, due to sRGB gamma. Dimension handles the gamma correctly
+ when rendering, though.
+ """
+ cdef dmnsn_color _c
+ cdef dmnsn_color _sRGB
+
+ def __init__(self, *args, **kwargs):
+ """
+ Create a Color.
+
+ Keyword arguments:
+ red -- The red component
+ green -- The green component
+ blue -- The blue component
+ trans -- The transparency of the color, 0.0 meaning opaque (default 0.0)
+ filter -- How filtered the transparency is (default 0.0)
+
+ Alternatively, you can pass another Color, a gray intensity like 0.5, or a
+ tuple or other sequence (red, green, blue[, trans[, filter]]).
+ """
+ if len(args) == 1:
+ if isinstance(args[0], Color):
+ self._sRGB = (<Color>args[0])._sRGB
+ elif hasattr(args[0], "__iter__"):
+ self._real_init(*args[0])
+ else:
+ self._sRGB = dmnsn_color_mul(args[0], dmnsn_white)
+ else:
+ self._real_init(*args, **kwargs)
+
+ self._c = dmnsn_color_from_sRGB(self._sRGB)
+
+ def _real_init(self, double red, double green, double blue,
+ double trans = 0.0, double filter = 0.0):
+ self._sRGB = dmnsn_new_color5(red, green, blue, trans, filter)
+
+ property red:
+ """The red component."""
+ def __get__(self):
+ return self._sRGB.R
+ property green:
+ """The green component."""
+ def __get__(self):
+ return self._sRGB.G
+ property blue:
+ """The blue component."""
+ def __get__(self):
+ return self._sRGB.B
+ property trans:
+ """The transparency of the color."""
+ def __get__(self):
+ return self._sRGB.trans
+ property filter:
+ """How filtered the transparency is."""
+ def __get__(self):
+ return self._sRGB.filter
+
+ def __nonzero__(self):
+ """Return whether a color is not black."""
+ return not dmnsn_color_is_black(self._c)
+
+ def __add__(lhs, rhs):
+ return _sRGBColor(dmnsn_color_add(Color(lhs)._sRGB, Color(rhs)._sRGB))
+ def __mul__(lhs, rhs):
+ if isinstance(lhs, Color):
+ return _sRGBColor(dmnsn_color_mul(rhs, (<Color>lhs)._sRGB))
+ else:
+ return _sRGBColor(dmnsn_color_mul(lhs, (<Color?>rhs)._sRGB))
+
+ def __richcmp__(lhs, rhs, int op):
+ cdef clhs = Color(lhs)
+ cdef crhs = Color(rhs)
+
+ cdef double rdiff = clhs.red - crhs.red
+ cdef double gdiff = clhs.green - crhs.green
+ cdef double bdiff = clhs.blue - crhs.blue
+ cdef double tdiff = clhs.trans - crhs.trans
+ cdef double fdiff = clhs.filter - crhs.filter
+ cdef double sum = rdiff*rdiff + gdiff*gdiff + bdiff*bdiff \
+ + tdiff*tdiff + fdiff*fdiff
+ equal = sqrt(sum) < dmnsn_epsilon
+ if op == 2: # ==
+ return equal
+ elif op == 3: # !=
+ return not equal
+ else:
+ return NotImplemented
+
+ def __repr__(self):
+ return "dimension.Color(%r, %r, %r, %r, %r)" % \
+ (self.red, self.green, self.blue, self.trans, self.filter)
+
+ def __str__(self):
+ if self.trans >= dmnsn_epsilon:
+ return "<red = %s, green = %s, blue = %s, trans = %s, filter = %s>" % \
+ (self.red, self.green, self.blue, self.trans, self.filter)
+ else:
+ return "<red = %s, green = %s, blue = %s>" % \
+ (self.red, self.green, self.blue)
+
+cdef Color _sRGBColor(dmnsn_color sRGB):
+ """Wrap a color object around a dmnsn_color already in sRGB."""
+ cdef Color self = Color.__new__(Color)
+ self._sRGB = sRGB
+ self._c = dmnsn_color_from_sRGB(sRGB)
+ return self
+
+cdef Color _Color(dmnsn_color c):
+ """Wrap a Color object around a dmnsn_color."""
+ cdef Color self = Color.__new__(Color)
+ self._c = c
+ self._sRGB = dmnsn_color_to_sRGB(c)
+ return self
+
+Black = _Color(dmnsn_black)
+White = _Color(dmnsn_white)
+Clear = _Color(dmnsn_clear)
+Red = _Color(dmnsn_red)
+Green = _Color(dmnsn_green)
+Blue = _Color(dmnsn_blue)
+Magenta = _Color(dmnsn_magenta)
+Orange = _Color(dmnsn_orange)
+Yellow = _Color(dmnsn_yellow)
+Cyan = _Color(dmnsn_cyan)
+
+############
+# Canvases #
+############
+
+cdef class Canvas:
+ """A rendering target."""
+ cdef dmnsn_canvas *_canvas
+
+ def __init__(self, width, height):
+ """
+ Create a Canvas.
+
+ Keyword arguments:
+ width -- the width of the canvas
+ height -- the height of the canvas
+ """
+ self._canvas = dmnsn_new_canvas(width, height)
+ self.clear(Black)
+
+ def __dealloc__(self):
+ dmnsn_delete_canvas(self._canvas)
+
+ property width:
+ """The width of the canvas."""
+ def __get__(self):
+ return self._canvas.width
+ property height:
+ """The height of the canvas."""
+ def __get__(self):
+ return self._canvas.height
+
+ def __len__(self):
+ """The width of the canvas."""
+ return self.width
+ def __getitem__(self, int x):
+ """Get a column of the canvas."""
+ if x < 0 or x >= self.width:
+ raise IndexError("x coordinate out of bounds.")
+ return _CanvasProxy(self, x)
+
+ def optimize_PNG(self):
+ """Optimize a canvas for PNG output."""
+ if dmnsn_png_optimize_canvas(self._canvas) != 0:
+ _raise_OSError()
+
+ def optimize_GL(self):
+ """Optimize a canvas for OpenGL output."""
+ if dmnsn_gl_optimize_canvas(self._canvas) != 0:
+ _raise_OSError()
+
+ def clear(self, c):
+ """Clear a canvas with a solid color."""
+ dmnsn_canvas_clear(self._canvas, Color(c)._c)
+
+ def write_PNG(self, path):
+ """Export the canvas as a PNG file."""
+ self.write_PNG_async(path).join()
+ def write_PNG_async(self, path):
+ """Export the canvas as a PNG file, in the background."""
+ bpath = path.encode("UTF-8")
+ cdef char *cpath = bpath
+ cdef FILE *file = fopen(cpath, "wb")
+ if file == NULL:
+ _raise_OSError(path)
+
+ def finalize():
+ if fclose(file) != 0:
+ _raise_OSError()
+
+ cdef dmnsn_future *future = dmnsn_png_write_canvas_async(self._canvas, file)
+
+ try:
+ if future == NULL:
+ _raise_OSError()
+
+ ret = _Future(future)
+ ret._finalizer = finalize
+ return ret
+ except:
+ finalize()
+ raise
+
+ def draw_GL(self):
+ """Export the canvas to the current OpenGL context."""
+ if dmnsn_gl_write_canvas(self._canvas) != 0:
+ _raise_OSError()
+
+cdef class _CanvasProxy:
+ cdef dmnsn_canvas *_canvas
+ cdef int _x
+
+ def __init__(self, Canvas canvas not None, int x):
+ self._canvas = canvas._canvas
+ self._x = x
+
+ def __len__(self):
+ """The height of the canvas."""
+ return self._canvas.height
+ def __getitem__(self, int y):
+ self._bounds_check(y)
+ return _Color(dmnsn_canvas_get_pixel(self._canvas, self._x, y))
+ def __setitem__(self, int y, color):
+ self._bounds_check(y)
+ dmnsn_canvas_set_pixel(self._canvas, self._x, y, Color(color)._c)
+
+ def _bounds_check(self, int y):
+ if y < 0 or y >= self._canvas.height:
+ raise IndexError("y coordinate out of bounds.")
+
+############
+# Patterns #
+############
+
+cdef class Pattern:
+ """A function which maps points in 3D space to scalar values."""
+ cdef dmnsn_pattern *_pattern
+
+ def __cinit__(self):
+ self._pattern = NULL
+
+ def __dealloc__(self):
+ dmnsn_delete_pattern(self._pattern)
+
+cdef class Checker(Pattern):
+ """A checkerboard pattern."""
+ def __init__(self):
+ self._pattern = dmnsn_new_checker_pattern()
+ Pattern.__init__(self)
+
+cdef class Gradient(Pattern):
+ """A gradient pattern."""
+ def __init__(self, orientation):
+ """
+ Create a gradient pattern.
+
+ Keyword arguments:
+ orientation -- The direction of the linear gradient.
+ """
+ self._pattern = dmnsn_new_gradient_pattern(Vector(orientation)._v)
+ Pattern.__init__(self)
+
+cdef class Leopard(Pattern):
+ """A leopard pattern."""
+ def __init__(self):
+ self._pattern = dmnsn_new_leopard_pattern()
+ Pattern.__init__(self)
+
+############
+# Pigments #
+############
+
+cdef class Pigment(_Transformable):
+ """Object surface coloring."""
+ cdef dmnsn_pigment *_pigment
+
+ def __cinit__(self):
+ self._pigment = NULL
+
+ def __init__(self, quick_color = None):
+ """
+ Create a Pigment.
+
+ With an arguement, create a solid pigment of that color. Otherwise, create
+ a base Pigment.
+
+ Keyword arguments:
+ quick_color -- the object's quick color for low-quality renders
+ """
+ if quick_color is not None:
+ if self._pigment == NULL:
+ if isinstance(quick_color, Pigment):
+ self._pigment = (<Pigment>quick_color)._pigment
+ DMNSN_INCREF(self._pigment)
+ else:
+ self._pigment = dmnsn_new_solid_pigment(Color(quick_color)._c)
+ else:
+ self._pigment.quick_color = Color(quick_color)._c
+
+ def __dealloc__(self):
+ dmnsn_delete_pigment(self._pigment)
+
+ def transform(self, Matrix trans not None):
+ """Transform a pigment."""
+ self._pigment.trans = dmnsn_matrix_mul(trans._m, self._pigment.trans)
+ return self
+
+cdef Pigment _Pigment(dmnsn_pigment *pigment):
+ """Wrap a Pigment object around a dmnsn_pigment *."""
+ cdef Pigment self = Pigment.__new__(Pigment)
+ self._pigment = pigment
+ DMNSN_INCREF(self._pigment)
+ return self
+
+cdef class ImageMap(Pigment):
+ """An image-mapped pigment."""
+ def __init__(self, path, *args, **kwargs):
+ """
+ Create an ImageMap.
+
+ Keyword arguments:
+ path -- the path of the PNG file to open
+ """
+ bpath = path.encode("UTF-8")
+ cdef char *cpath = bpath
+ cdef FILE *file = fopen(cpath, "rb")
+ if file == NULL:
+ _raise_OSError(path)
+ cdef dmnsn_canvas *canvas = dmnsn_png_read_canvas(file)
+ if canvas == NULL:
+ _raise_OSError(path)
+ if fclose(file) != 0:
+ _raise_OSError()
+
+ self._pigment = dmnsn_new_canvas_pigment(canvas)
+ Pigment.__init__(self, *args, **kwargs)
+
+cdef class PigmentMap(Pigment):
+ """A pigment map."""
+ def __init__(self, Pattern pattern not None, map, bool sRGB not None = True,
+ *args, **kwargs):
+ """
+ Create a PigmentMap.
+
+ Keyword arguments:
+ pattern -- the pattern to use for the mapping
+ map -- a dictionary of the form { val1: color1, val2: pigment2, ... },
+ or a list of the form [color1, pigment2, ...]
+ sRGB -- whether the gradients should be in sRGB or linear space
+ (default True)
+ """
+ cdef dmnsn_map *pigment_map = dmnsn_new_pigment_map()
+ cdef dmnsn_pigment *real_pigment
+ if hasattr(map, "items"):
+ for i, pigment in map.items():
+ pigment = Pigment(pigment)
+ real_pigment = (<Pigment>pigment)._pigment
+ DMNSN_INCREF(real_pigment)
+ dmnsn_map_add_entry(pigment_map, i, &real_pigment)
+ else:
+ for i, pigment in enumerate(map):
+ pigment = Pigment(pigment)
+ real_pigment = (<Pigment>pigment)._pigment
+ DMNSN_INCREF(real_pigment)
+ dmnsn_map_add_entry(pigment_map, i/len(map), &real_pigment)
+
+ cdef dmnsn_pigment_map_flags flags
+ if sRGB:
+ flags = DMNSN_PIGMENT_MAP_SRGB
+ else:
+ flags = DMNSN_PIGMENT_MAP_REGULAR
+
+ DMNSN_INCREF(pattern._pattern)
+ self._pigment = dmnsn_new_pigment_map_pigment(pattern._pattern, pigment_map,
+ flags)
+ Pigment.__init__(self, *args, **kwargs)
+
+############
+# Finishes #
+############
+
+cdef class Finish:
+ """Object surface qualities."""
+ cdef dmnsn_finish _finish
+
+ def __cinit__(self):
+ self._finish = dmnsn_new_finish()
+
+ def __dealloc__(self):
+ dmnsn_delete_finish(self._finish)
+
+ def __add__(Finish lhs not None, Finish rhs not None):
+ """
+ Combine two finishes.
+
+ In lhs + rhs, the attributes of rhs override those of lhs if any conflict;
+ thus, Ambient(0.1) + Ambient(0.2) is the same as Ambient(0.2)
+ """
+ cdef Finish ret = Finish()
+ dmnsn_finish_cascade(&lhs._finish, &ret._finish)
+ dmnsn_finish_cascade(&rhs._finish, &ret._finish) # rhs gets priority
+ return ret
+
+cdef Finish _Finish(dmnsn_finish finish):
+ """Wrap a Finish object around a dmnsn_finish."""
+ cdef Finish self = Finish.__new__(Finish)
+ self._finish = finish
+ dmnsn_finish_incref(&self._finish)
+ return self
+
+cdef class Ambient(Finish):
+ """Ambient light reflected."""
+ def __init__(self, color):
+ """
+ Create an Ambient finish.
+
+ Keyword arguments:
+ color -- the color and intensity of the ambient light
+ """
+ self._finish.ambient = dmnsn_new_basic_ambient(Color(color)._c)
+
+cdef class Diffuse(Finish):
+ """Lambertian diffuse reflection."""
+ def __init__(self, double diffuse):
+ """
+ Create a Diffuse finish.
+
+ Keyword arguments:
+ diffuse -- the intensity of the diffuse reflection
+ """
+ cdef dmnsn_color gray = dmnsn_color_mul(diffuse, dmnsn_white)
+ diffuse = dmnsn_color_intensity(dmnsn_color_from_sRGB(gray))
+ self._finish.diffuse = dmnsn_new_lambertian(diffuse)
+
+cdef class Phong(Finish):
+ """Phong specular highlight."""
+ def __init__(self, double strength, double size = 40.0):
+ """
+ Create a Phong highlight.
+ """
+ self._finish.specular = dmnsn_new_phong(strength, size)
+
+cdef class Reflection(Finish):
+ """Reflective finish."""
+ def __init__(self, min, max = None, double falloff = 1.0):
+ """
+ Create a Reflection.
+
+ Keyword arguments:
+ min -- color and intensity of reflection at indirect angles
+ max -- color and intensity of reflection at direct angles (default: min)
+ falloff -- exponent for reflection falloff (default: 1.0)
+ """
+ if max is None:
+ max = min
+
+ # Use sRGB value because Reflection(0.5) should really mean "reflect half
+ # the light"
+ self._finish.reflection = dmnsn_new_basic_reflection(Color(min)._sRGB,
+ Color(max)._sRGB,
+ falloff)
+
+############
+# Textures #
+############
+
+cdef class Texture(_Transformable):
+ """Object surface properties."""
+ cdef dmnsn_texture *_texture
+
+ def __init__(self, pigment = None, Finish finish = None):
+ """
+ Create a Texture.
+
+ Keyword arguments:
+ pigment -- the Pigment for the texture, or a color (default: None)
+ finish -- the Finish for the texture (default: None)
+ """
+ self._texture = dmnsn_new_texture()
+
+ if pigment is not None:
+ self.pigment = Pigment(pigment)
+
+ if finish is not None:
+ self.finish = finish
+
+ def __dealloc__(self):
+ dmnsn_delete_texture(self._texture)
+
+ property pigment:
+ """The texture's pigment."""
+ def __get__(self):
+ if self._texture.pigment == NULL:
+ return None
+ else:
+ return _Pigment(self._texture.pigment)
+ def __set__(self, pigment):
+ dmnsn_delete_pigment(self._texture.pigment)
+ cdef Pigment real_pigment
+ if pigment is None:
+ self._texture.pigment = NULL
+ else:
+ real_pigment = Pigment(pigment)
+ self._texture.pigment = real_pigment._pigment
+ DMNSN_INCREF(self._texture.pigment)
+
+ property finish:
+ """The texture's finish."""
+ def __get__(self):
+ return _Finish(self._texture.finish)
+ def __set__(self, Finish finish not None):
+ dmnsn_delete_finish(self._texture.finish)
+ self._texture.finish = finish._finish
+ dmnsn_finish_incref(&self._texture.finish)
+
+ def transform(self, Matrix trans not None):
+ """Transform a texture."""
+ self._texture.trans = dmnsn_matrix_mul(trans._m, self._texture.trans)
+ return self
+
+cdef Texture _Texture(dmnsn_texture *texture):
+ """Wrap a Texture object around a dmnsn_texture *."""
+ cdef Texture self = Texture.__new__(Texture)
+ self._texture = texture
+ DMNSN_INCREF(self._texture)
+ return self
+
+#############
+# Interiors #
+#############
+
+cdef class Interior:
+ """Object interior properties."""
+ cdef dmnsn_interior *_interior
+
+ def __init__(self, double ior = 1.0):
+ """
+ Create an Interior.
+
+ Keyword arguments:
+ ior -- index of reflection
+ """
+ self._interior = dmnsn_new_interior()
+ self._interior.ior = ior
+
+ def __dealloc__(self):
+ dmnsn_delete_interior(self._interior)
+
+ property ior:
+ """Index of reflection."""
+ def __get__(self):
+ return self._interior.ior
+ def __set__(self, double ior):
+ self._interior.ior = ior
+
+cdef Interior _Interior(dmnsn_interior *interior):
+ """Wrap an Interior object around a dmnsn_interior *."""
+ cdef Interior self = Interior.__new__(Interior)
+ self._interior = interior
+ DMNSN_INCREF(self._interior)
+ return self
+
+###########
+# Objects #
+###########
+
+cdef class Object(_Transformable):
+ """Physical objects."""
+ cdef dmnsn_object *_object
+
+ def __cinit__(self):
+ self._object = NULL
+
+ def __init__(self, Texture texture = None, pigment = None,
+ Finish finish = None, Interior interior = None):
+ """
+ Initialize an Object.
+
+ Keyword arguments:
+ texture -- the object's Texture
+ pigment -- shorthand for specifying the texture's pigment
+ finish -- shorthand for specifying the texture's finish
+ interior -- the object's Interior
+ """
+ if self._object == NULL:
+ raise TypeError("attempt to initialize base Object")
+
+ self.texture = texture
+ if pigment is not None:
+ if texture is not None:
+ raise TypeError("both texture and pigment specified.")
+ else:
+ if self.texture is None:
+ self.texture = Texture()
+ self.texture.pigment = pigment
+
+ if finish is not None:
+ if texture is not None:
+ raise TypeError("both texture and finish specified.")
+ else:
+ if self.texture is None:
+ self.texture = Texture()
+ self.texture.finish = finish
+
+ if interior is not None:
+ self.interior = interior
+
+ def __dealloc__(self):
+ dmnsn_delete_object(self._object)
+
+ property texture:
+ """The object's Texture."""
+ def __get__(self):
+ if self._object.texture == NULL:
+ return None
+ else:
+ return _Texture(self._object.texture)
+ def __set__(self, Texture texture):
+ dmnsn_delete_texture(self._object.texture)
+ if texture is None:
+ self._object.texture = NULL
+ else:
+ self._object.texture = texture._texture
+ DMNSN_INCREF(self._object.texture)
+
+ property interior:
+ """The object's Interior."""
+ def __get__(self):
+ return _Interior(self._object.interior)
+ def __set__(self, Interior interior not None):
+ self._object.interior = interior._interior
+ DMNSN_INCREF(self._object.interior)
+
+ def transform(self, Matrix trans not None):
+ """Transform an object."""
+ self._object.trans = dmnsn_matrix_mul(trans._m, self._object.trans)
+ return self
+
+ # Transform an object without affecting the texture
+ cdef _intrinsic_transform(self, Matrix trans):
+ self._object.intrinsic_trans = dmnsn_matrix_mul(
+ trans._m,
+ self._object.intrinsic_trans
+ )
+
+cdef class Triangle(Object):
+ """A triangle."""
+ def __init__(self, a, b, c, *args, **kwargs):
+ """
+ Create a Triangle.
+
+ Keyword arguments:
+ a, b, c -- the corners of the triangle
+
+ Additionally, Triangle() accepts any arguments that Object() accepts.
+ """
+ self._object = dmnsn_new_triangle(Vector(a)._v, Vector(b)._v, Vector(c)._v)
+ Object.__init__(self, *args, **kwargs)
+
+cdef class Plane(Object):
+ """A plane."""
+ def __init__(self, normal, double distance, *args, **kwargs):
+ """
+ Create a Plane.
+
+ Keyword arguments:
+ normal -- a vector perpendicular to the plane
+ distance -- the distance from the origin to the plane, in the direction of
+ normal
+
+ Additionally, Plane() accepts any arguments that Object() accepts.
+ """
+ self._object = dmnsn_new_plane(Vector(normal)._v)
+ Object.__init__(self, *args, **kwargs)
+
+ self._intrinsic_transform(translate(distance*Vector(normal)))
+
+cdef class Sphere(Object):
+ """A sphere."""
+ def __init__(self, center, double radius, *args, **kwargs):
+ """
+ Create a Sphere.
+
+ Keyword arguments:
+ center -- the center of the sphere
+ radius -- the radius of the sphere
+
+ Additionally, Sphere() accepts any arguments that Object() accepts.
+ """
+ self._object = dmnsn_new_sphere()
+ Object.__init__(self, *args, **kwargs)
+
+ cdef Matrix trans = translate(Vector(center))
+ trans *= scale(radius, radius, radius)
+ self._intrinsic_transform(trans)
+
+cdef class Box(Object):
+ """An axis-aligned rectangular prism."""
+ def __init__(self, min, max, *args, **kwargs):
+ """
+ Create a Box.
+
+ Keyword arguments:
+ min -- the coordinate-wise minimal extent of the box
+ max -- the coordinate-wise maximal extent of the box
+
+ Additionally, Box() accepts any arguments that Object() accepts.
+ """
+ self._object = dmnsn_new_cube()
+ Object.__init__(self, *args, **kwargs)
+
+ min = Vector(min)
+ max = Vector(max)
+ cdef Matrix trans = translate((max + min)/2)
+ trans *= scale((max - min)/2)
+ self._intrinsic_transform(trans)
+
+cdef class Cone(Object):
+ """A cone or cone slice."""
+ def __init__(self, bottom, double bottom_radius, top, double top_radius = 0.0,
+ bool open not None = False, *args, **kwargs):
+ """
+ Create a Cone.
+
+ Keyword arguments:
+ bottom -- the location of the bottom of the cone
+ bottom_radius -- the radius at the bottom of the cone
+ top -- the location of the top of the cone
+ top_radius -- the radius at the top of the cone/cone slice (default 0.0)
+ open -- whether to draw the cone cap(s)
+
+ Additionally, Cone() accepts any arguments that Object() accepts.
+ """
+ self._object = dmnsn_new_cone(bottom_radius, top_radius, open)
+ Object.__init__(self, *args, **kwargs)
+
+ # Lift the cone to start at the origin, then scale, rotate, and translate
+ # properly
+
+ cdef Vector dir = Vector(top) - Vector(bottom)
+
+ cdef Matrix trans = translate(Y)
+ trans = scale(1.0, dir.norm()/2, 1.0)*trans
+ trans = _Matrix(dmnsn_alignment_matrix(dmnsn_y, dir._v, dmnsn_x, dmnsn_z))*trans
+ trans = translate(bottom)*trans
+
+ self._intrinsic_transform(trans)
+
+cdef class Cylinder(Cone):
+ """A cylinder."""
+ def __init__(self, bottom, top, double radius, bool open not None = False,
+ *args, **kwargs):
+ """
+ Create a Cylinder.
+
+ Keyword arguments:
+ bottom -- the location of the bottom of the cylinder
+ top -- the location of the top of the cylinder
+ radius -- the radius of the cylinder
+ open -- whether to draw the cylinder caps
+
+ Additionally, Cylinder() accepts any arguments that Object() accepts.
+ """
+ Cone.__init__(self,
+ bottom = bottom, bottom_radius = radius,
+ top = top, top_radius = radius,
+ open = open,
+ *args, **kwargs)
+
+cdef class Torus(Object):
+ """A torus."""
+ def __init__(self, double major_radius, double minor_radius, *args, **kwargs):
+ """
+ Create a Torus.
+
+ Keyword arguments:
+ major_radius -- the distance from the center of the torus to the center of
+ a circular cross-section of the torus
+ minor_radius -- the radius of the circular cross-sections of the torus
+
+ Additionally, Torus() accepts any arguments that Object() accepts.
+ """
+ self._object = dmnsn_new_torus(major_radius, minor_radius)
+ Object.__init__(self, *args, **kwargs)
+
+cdef class Union(Object):
+ """A CSG union."""
+ def __init__(self, objects, *args, **kwargs):
+ """
+ Create a Union.
+
+ Keyword arguments:
+ objects -- a list of objects to include in the union
+
+ Additionally, Union() accepts any arguments that Object() accepts.
+ """
+ if len(objects) < 2:
+ raise TypeError("expected a list of two or more Objects")
+
+ cdef dmnsn_array *array = dmnsn_new_array(sizeof(dmnsn_object *))
+ cdef dmnsn_object *o
+
+ try:
+ for obj in objects:
+ o = (<Object?>obj)._object
+ DMNSN_INCREF(o)
+ dmnsn_array_push(array, &o)
+
+ self._object = dmnsn_new_csg_union(array)
+ finally:
+ dmnsn_delete_array(array)
+
+ Object.__init__(self, *args, **kwargs)
+
+cdef class Intersection(Object):
+ """A CSG intersection."""
+ def __init__(self, objects, *args, **kwargs):
+ """
+ Create an Intersection.
+
+ Keyword arguments:
+ objects -- a list of objects to include in the intersection
+
+ Additionally, Intersection() accepts any arguments that Object() accepts.
+ """
+ if len(objects) < 2:
+ raise TypeError("expected a list of two or more Objects")
+
+ cdef dmnsn_object *o
+
+ for obj in objects:
+ if self._object == NULL:
+ self._object = (<Object?>obj)._object
+ DMNSN_INCREF(self._object)
+ else:
+ o = (<Object?>obj)._object
+ DMNSN_INCREF(o)
+ self._object = dmnsn_new_csg_intersection(self._object, o)
+
+ Object.__init__(self, *args, **kwargs)
+
+cdef class Difference(Object):
+ """A CSG difference."""
+ def __init__(self, objects, *args, **kwargs):
+ """
+ Create a Difference.
+
+ Keyword arguments:
+ objects -- a list of objects to include in the difference
+
+ Additionally, Difference() accepts any arguments that Object() accepts.
+ """
+ if len(objects) < 2:
+ raise TypeError("expected a list of two or more Objects")
+
+ cdef dmnsn_object *o
+
+ for obj in objects:
+ if self._object == NULL:
+ self._object = (<Object?>obj)._object
+ DMNSN_INCREF(self._object)
+ else:
+ o = (<Object?>obj)._object
+ DMNSN_INCREF(o)
+ self._object = dmnsn_new_csg_difference(self._object, o)
+
+ Object.__init__(self, *args, **kwargs)
+
+cdef class Merge(Object):
+ """A CSG merge."""
+ def __init__(self, objects, *args, **kwargs):
+ """
+ Create a Merge.
+
+ Keyword arguments:
+ objects -- a list of objects to include in the merge
+
+ Additionally, Merge() accepts any arguments that Object() accepts.
+ """
+ if len(objects) < 2:
+ raise TypeError("expected a list of two or more Objects")
+
+ cdef dmnsn_object *o
+
+ for obj in objects:
+ if self._object == NULL:
+ self._object = (<Object?>obj)._object
+ DMNSN_INCREF(self._object)
+ else:
+ o = (<Object?>obj)._object
+ DMNSN_INCREF(o)
+ self._object = dmnsn_new_csg_merge(self._object, o)
+
+ Object.__init__(self, *args, **kwargs)
+
+##########
+# Lights #
+##########
+
+cdef class Light:
+ """A light."""
+ cdef dmnsn_light *_light
+
+ def __dealloc__(self):
+ dmnsn_delete_light(self._light)
+
+cdef class PointLight(Light):
+ """A point light."""
+ def __init__(self, location, color):
+ """
+ Create a PointLight.
+
+ Keyword arguments:
+ location -- the origin of the light rays
+ color -- the color and intensity of the light
+ """
+ # Take the sRGB component because "color = 0.5*White" should really mean
+ # a half-intensity white light
+ self._light = dmnsn_new_point_light(Vector(location)._v, Color(color)._sRGB)
+ Light.__init__(self)
+
+###########
+# Cameras #
+###########
+
+cdef class Camera(_Transformable):
+ """A camera."""
+ cdef dmnsn_camera *_camera
+
+ def __cinit__(self):
+ self._camera = NULL
+
+ def __init__(self):
+ if self._camera == NULL:
+ raise TypeError("attempt to initialize base Camera")
+
+ def __dealloc__(self):
+ dmnsn_delete_camera(self._camera)
+
+ def transform(self, Matrix trans not None):
+ """Transform a camera."""
+ self._camera.trans = dmnsn_matrix_mul(trans._m, self._camera.trans)
+ return self
+
+cdef class PerspectiveCamera(Camera):
+ """A regular perspective camera."""
+ def __init__(self, location = -Z, look_at = 0, sky = Y,
+ angle = dmnsn_degrees(atan(1.0))):
+ """
+ Create a PerspectiveCamera.
+
+ Keyword arguments:
+ location -- the location of the camera (default: -Z)
+ look_at -- where to aim the camera (default: 0)
+ sky -- the direction of the top of the camera (default: Y)
+ angle -- the field of view angle (from bottom to top) (default: 45)
+ """
+ self._camera = dmnsn_new_perspective_camera()
+ Camera.__init__(self)
+
+ # Apply the field of view angle
+ self.scale(tan(dmnsn_radians(angle))*(X + Y) + Z)
+
+ cdef Vector dir = Vector(look_at) - Vector(location)
+ cdef Vector vsky = Vector(sky)
+
+ # Line up the top of the viewport with the sky vector
+ cdef Matrix align_sky = _Matrix(dmnsn_alignment_matrix(dmnsn_y, vsky._v,
+ dmnsn_z, dmnsn_x))
+ cdef Vector forward = align_sky*Z
+ cdef Vector right = align_sky*X
+
+ # Line up the look at point with look_at
+ self.transform(_Matrix(dmnsn_alignment_matrix(forward._v, dir._v,
+ vsky._v, right._v)))
+
+ # Move the camera into position
+ self.translate(Vector(location))
+
+##########
+# Scenes #
+##########
+
+cdef class Scene:
+ """An entire scene."""
+ cdef dmnsn_scene *_scene
+
+ def __init__(self, Canvas canvas not None, objects, lights,
+ Camera camera not None):
+ """
+ Create a Scene.
+
+ Keyword arguments:
+ canvas -- the rendering Canvas
+ objects -- the list of objects in the scene
+ lights -- the list of lights in the scene
+ camera -- the camera for the scene
+ """
+ self._scene = dmnsn_new_scene()
+
+ self._scene.canvas = canvas._canvas
+ DMNSN_INCREF(self._scene.canvas)
+ self.outer_width = self._scene.canvas.width
+ self.outer_height = self._scene.canvas.height
+ self.background = Black
+
+ cdef dmnsn_object *o
+ for obj in objects:
+ o = (<Object?>obj)._object
+ DMNSN_INCREF(o)
+ dmnsn_array_push(self._scene.objects, &o)
+
+ cdef dmnsn_light *l
+ for light in lights:
+ l = (<Light?>light)._light
+ DMNSN_INCREF(l)
+ dmnsn_array_push(self._scene.lights, &l)
+
+ self._scene.camera = camera._camera
+ DMNSN_INCREF(self._scene.camera)
+
+ # Subregion render support
+ property region_x:
+ """The x-coordinate of the subregion in the broader image."""
+ def __get__(self):
+ return self._scene.region_x
+ def __set__(self, x):
+ self._scene.region_x = x
+ property region_y:
+ """The y-coordinate of the subregion in the broader image."""
+ def __get__(self):
+ return self._scene.region_y
+ def __set__(self, y):
+ self._scene.region_y = y
+ property outer_width:
+ """The width of the broader image."""
+ def __get__(self):
+ return self._scene.outer_width
+ def __set__(self, width):
+ self._scene.outer_width = width
+ property outer_height:
+ """The height of the broader image."""
+ def __get__(self):
+ return self._scene.outer_height
+ def __set__(self, height):
+ self._scene.outer_height = height
+
+ property default_texture:
+ """The default Texture for objects."""
+ def __get__(self):
+ return _Texture(self._scene.default_texture)
+ def __set__(self, Texture texture not None):
+ dmnsn_delete_texture(self._scene.default_texture)
+ self._scene.default_texture = texture._texture
+ DMNSN_INCREF(self._scene.default_texture)
+ property default_interior:
+ """The default Interior for objects."""
+ def __get__(self):
+ return _Interior(self._scene.default_interior)
+ def __set__(self, Interior interior not None):
+ dmnsn_delete_interior(self._scene.default_interior)
+ self._scene.default_interior = interior._interior
+ DMNSN_INCREF(self._scene.default_interior)
+
+ property background:
+ """The background pigment of the scene (default: Black)."""
+ def __get__(self):
+ return _Pigment(self._scene.background)
+ def __set__(self, pigment):
+ dmnsn_delete_pigment(self._scene.background)
+ cdef Pigment real_pigment = Pigment(pigment)
+ self._scene.background = real_pigment._pigment
+ DMNSN_INCREF(self._scene.background)
+
+ property adc_bailout:
+ """The adaptive depth control bailout (default: 1/255)."""
+ def __get__(self):
+ return self._scene.adc_bailout
+ def __set__(self, double bailout):
+ self._scene.adc_bailout = bailout
+
+ property recursion_limit:
+ """The rendering recursion limit (default: 5)."""
+ def __get__(self):
+ return self._scene.reclimit
+ def __set__(self, level):
+ self._scene.reclimit = level
+
+ property nthreads:
+ """The number of threads to use for the render."""
+ def __get__(self):
+ return self._scene.nthreads
+ def __set__(self, n):
+ if n <= 0:
+ raise ValueError("%d is an invalid thread count." % n)
+ self._scene.nthreads = n
+
+ property quality:
+ """The render quality."""
+ def __get__(self):
+ return _quality_to_string(self._scene.quality)
+ def __set__(self, q):
+ self._scene.quality = _string_to_quality(q)
+
+ property bounding_timer:
+ """The Timer for building the bounding hierarchy."""
+ def __get__(self):
+ return _Timer(self._scene.bounding_timer)
+ property render_timer:
+ """The Timer for the actual render."""
+ def __get__(self):
+ return _Timer(self._scene.render_timer)
+
+ def ray_trace(self):
+ """Render the scene."""
+ self.ray_trace_async().join()
+ def ray_trace_async(self):
+ """Render the scene, in the background."""
+ # Account for image dimensions in the camera
+ # Do this here so subregion renders can tell us the broader image size
+ self._scene.camera.trans = dmnsn_matrix_mul(
+ self._scene.camera.trans,
+ dmnsn_scale_matrix(
+ dmnsn_new_vector(
+ self.outer_width/self.outer_height,
+ 1.0,
+ 1.0
+ )
+ )
+ )
+ # Ensure the default texture is complete
+ cdef Texture default = Texture(pigment = Black)
+ dmnsn_texture_cascade(default._texture, &self._scene.default_texture)
+ return _Future(dmnsn_ray_trace_async(self._scene))
+
+ def __dealloc__(self):
+ dmnsn_delete_scene(self._scene)
+
+def _quality_to_string(int quality):
+ cdef str s = ""
+
+ if quality & DMNSN_RENDER_PIGMENT:
+ s += 'p'
+ if quality & DMNSN_RENDER_LIGHTS:
+ s += 'l'
+ if quality & DMNSN_RENDER_FINISH:
+ s += 'f'
+ if quality & DMNSN_RENDER_TRANSPARENCY:
+ s += 't'
+ if quality & DMNSN_RENDER_REFLECTION:
+ s += 'r'
+
+ if s == "":
+ return "0"
+ else:
+ return s
+
+def _string_to_quality(str quality not None):
+ cdef int q = DMNSN_RENDER_NONE
+ inverse = False
+
+ if quality == "":
+ return q
+
+ if quality[0] == '^':
+ inverse = True
+ quality = quality[1:]
+
+ if quality != "0":
+ while len(quality) > 0:
+ ch = quality[0]
+ quality = quality[1:]
+
+ if ch == 'p':
+ flag = DMNSN_RENDER_PIGMENT
+ elif ch == 'l':
+ flag = DMNSN_RENDER_LIGHTS
+ elif ch == 'f':
+ flag = DMNSN_RENDER_FINISH
+ elif ch == 't':
+ flag = DMNSN_RENDER_TRANSPARENCY
+ elif ch == 'r':
+ flag = DMNSN_RENDER_REFLECTION
+ else:
+ raise ValueError("unknown quality flag '%c'" % ch)
+
+ if q & flag:
+ raise ValueError("flag '%c' specified twice" % ch)
+ else:
+ q |= flag
+
+ if inverse:
+ q = ~q
+
+ return q
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-28 00:00:32 +0000