# PySoy Scenes Declarations
#
# Copyright (C) 2006,2007,2008 PySoy Group
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU Affero General Public License as published
#  by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
#
#  You should have received a copy of the GNU Affero General Public License
#  along with this program; if not, see http://www.gnu.org/licenses
#
# $Id$

cimport gl
cimport glib
cimport ode
cimport py
cimport math
cimport soy._internals
cimport soy._datatypes
cimport soy.colors
cimport soy.materials

cdef :
  struct Face :
    unsigned short a
    unsigned short b
    unsigned short c

  struct Quad :
    unsigned int a
    unsigned int b
    unsigned int c
    unsigned int d

  struct Vert :
    float px
    float py
    float pz
    float nx
    float ny
    float nz
    float tx
    float ty
    float tz
    float ux
    float uy
    float uz

cdef void _prerunField(void*, void*, void*) nogil
cdef void _runField(void*, void*, void*) nogil

cdef class Scene (soy._internals.Loopable) :
  cdef ode.dWorldID               _worldID
  cdef ode.dSpaceID               _spaceID
  cdef ode.dJointGroupID          _contactGroup
  cdef soy._internals.Children    _bodies
  cdef soy._internals.Children    _fields
  cdef soy._internals.Children    _joints
  cdef soy._internals.Children    _lights
  cdef soy._internals.PointerSet  _giveFields
  cdef soy._internals.PointerSet  _callFields
  cdef soy.colors.Color           _ambient
  cdef float                      _fogDensity
  cdef void*                      _stepMutex
  cdef void                       _stepLock       ( self )                nogil
  cdef int                        _stepTryLock    ( self )                nogil
  cdef void                       _stepUnLock     ( self )                nogil
  cdef ode.dReal                  _stepSize
  cdef ode.dReal                  _friction
  cdef double                     _prevTime
  cdef double                     _time
  # _coreloop methods
  cdef void                       _render         ( self, 
                                                    gl.GLdouble, gl.GLdouble, 
                                                    gl.GLdouble, gl.GLdouble )
  cdef int                        _steps          ( self )                nogil
  cdef void                       _callback       ( self, 
                                                    ode.dGeomID,
                                                    ode.dGeomID )         nogil


cdef class Landscape (Scene) :
  cdef ode.dGeomID                _geomID
  cdef ode.dHeightfieldDataID     _heightfieldDataID
  cdef float                      _position[3]
  cdef float                      _width
  cdef float                      _height
  cdef float                      _depth
  cdef soy.textures.Texture       _pyMap
  cdef soy.textures.Texture       _tzMap
  cdef soy.materials.Material     _material
  cdef Vert*                      _vertArray
  cdef gl.GLuint                  _vertBuffer
  cdef Vert*                      _backArray
  cdef gl.GLuint                  _backBuffer
  cdef Quad*                      _faceArray
  cdef gl.GLuint                  _faceBuffer
  cdef void                       _createBuffer   ( self )
  cdef void                       _createArrays   ( self )
  
cdef class Planar (Scene) :
  cdef ode.dGeomID                _planeID
  cdef float                      _offset
  cdef soy.materials.Material     _material
  cdef Vert                       _verts[60]
  cdef Face                       _faces[40]
  cdef Vert                       _midpoint(self, Vert, Vert)