/usr/share/doc/python-soya-doc/examples/modeling-shadow-1.py is in python-soya-doc 0.14-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 | #!/usr/bin/env python
# -*- coding: utf-8 -*-
# -*- indent-tabs-mode: t -*-
# Soya 3D tutorial
# Copyright (C) 2001-2004 Jean-Baptiste LAMY
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# modeling-shadow-1: Modeling : shadows !
# Shadows must be enabled both on the light that casts the shadow, and on the model
# that projects it.
# The shadow algorithm assume that non-double sided faces are part of closed bodys, so
# you should take this into account when designing your models.
# Nothing is assumed for double sided faces, though, so in doubt, use double sided faces.
# To add shadow to an animated character, see also tutorial lesson
# character-animation-shadow-cellshading-1.
# Imports and inits Soya (see lesson basic-1.py).
import sys, os, os.path, soya, soya.cube
soya.init()
soya.path.append(os.path.join(os.path.dirname(sys.argv[0]), "data"))
# Creates the scene.
scene = soya.World()
# Loads the sword model.
sword = soya.World.get("sword")
# Creates a simple model model_builder object. A model_builder is an object that says how a world
# is compiled into a model. When no model_builder is specified, Soya uses the default model_builder
# (an instance of SimpleModelBuilder, that does not include shadows).
model_builder = soya.SimpleModelBuilder()
# Sets the 'shadow' model_builder property to true.
model_builder.shadow = 1
# Assigns the model_builder to the sword.
sword.model_builder = model_builder
# Compiles the sword model to a shadowed model. Notice that is you save the sword now,
# the model_builder would be saved with it too, and thus you can use 'soya.Model.get("sword")'.
sword_model = sword.to_model()
# Create a rotating body class, and a rotating body.
class RotatingBody(soya.Body):
def __init__(self, parent = None, model = None):
soya.Body.__init__(self, parent, model)
def advance_time(self, proportion):
soya.Body.advance_time(self, proportion)
self.rotate_y(proportion * 2.0)
body = RotatingBody(scene, sword_model)
body.set_xyz(1.0, -1.0, 0.0)
body.rotate_x(90.0)
# Creates a wall, to receive the shadow.
# Notice that the wall can be any object (including e.g. a terrain,...) : receiving
# shadows doesn't require any particular property.
wall_model = soya.World()
wall_face = soya.Face(wall_model, [
soya.Vertex(wall_model, 0.0, -5.0, -5.0),
soya.Vertex(wall_model, 0.0, -5.0, 5.0),
soya.Vertex(wall_model, 0.0, 5.0, 5.0),
soya.Vertex(wall_model, 0.0, 5.0, -5.0),
])
wall_face.double_sided = 1
wall = soya.Body(scene, wall_model.to_model())
wall.set_xyz(-1.0, 0.0, 0.0)
# Creates a light.
light = soya.Light(scene)
light.set_xyz(5.0, 0.0, 0.0)
# Sets the light's shadow color. Semitransparent color (alpha < 1.0) are often used.
light.shadow_color = (0.0, 0.0, 0.0, 0.5)
# Enables shadows for this light
light.cast_shadow = 1
# Creates a camera.
camera = soya.Camera(scene)
camera.set_xyz(0.0, 0.0, 3.5)
soya.set_root_widget(camera)
soya.MainLoop(scene).main_loop()
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