Sharedwww / talks / 2006-05-09-sage-digipen / tutorial / state-1.pyOpen in CoCalc
Author: William A. Stein
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# Soya 3D tutorial
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# Copyright (C) 2004 Jean-Baptiste LAMY
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# state-1: CoordSystState object
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# In this lesson, you'll learn how to use CoordSystState to interpolate between
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# two State (position, orientation and scaling) of a 3D object.
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import sys, os, os.path, soya, soya.cube
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soya.init()
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soya.path.append(os.path.join(os.path.dirname(sys.argv[0]), "data"))
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# Creates the scene.
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scene = soya.World()
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# Create a volume class that interpolates between two States.
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class InterpolatingVolume(soya.Volume):
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def __init__(self, parent = None, shape = None):
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soya.Volume.__init__(self, parent, shape)
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# Create two State objects, based on the current position of 'self'.
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self.state1 = soya.CoordSystState(self)
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self.state2 = soya.CoordSystState(self)
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self.factor = 0.0
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def advance_time(self, proportion):
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self.factor += 0.01 * proportion
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# interpolate(state1, state2, factor) interpolates between state1 and state2.
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self.interpolate(self.state1, self.state2, self.factor)
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volume = InterpolatingVolume(scene, soya.cube.Cube(None).shapify())
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# Moves, rotates and scales the States.
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# Notice that States have the Soya's usual positioning method (actually State even inherit
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# from CoordSyst).
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volume.state1.set_xyz(-1.0, -0.5, 0.0)
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volume.state2.set_xyz(1.0, 1.0, -1.0)
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volume.state2.rotate_lateral(90.0)
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volume.state2.scale(3.0, 1.0, 1.0)
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# Adds a light.
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light = soya.Light(scene)
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light.set_xyz(0.0, 0.2, 1.0)
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# Creates a camera.
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camera = soya.Camera(scene)
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camera.set_xyz(0.0, 0.0, 4.0)
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camera.fov = 100.0
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soya.set_root_widget(camera)
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# Main loop
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soya.Idler(scene).idle()
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# TODO / exercice : turn this demo into a puzzle game !
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