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/* $Id$
-----------------------------------------------------------------------------
This source file is part of VideoTexture library
Copyright (c) 2007 The Zdeno Ash Miklas
This program 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 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 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, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.
-----------------------------------------------------------------------------
*/
// implementation
#include <PyObjectPlus.h>
#include <structmember.h>
#include <KX_BlenderCanvas.h>
#include <KX_BlenderRenderTools.h>
#include <RAS_IRasterizer.h>
#include <RAS_OpenGLRasterizer.h>
#include <KX_WorldInfo.h>
#include <KX_Light.h>
#include "ImageRender.h"
#include "ImageBase.h"
#include "BlendType.h"
#include "Exception.h"
// constructor
ImageRender::ImageRender (KX_Scene * scene, KX_Camera * camera) : m_scene(scene),
m_camera(camera)
{
// create screen area
m_area.winrct.xmin = m_upLeft[0];
m_area.winrct.ymin = m_upLeft[1];
m_area.winx = m_size[0];
m_area.winy = m_size[1];
// create canvas
m_canvas = new KX_BlenderCanvas(&m_area);
// create render tools
m_rendertools = new KX_BlenderRenderTools();
// create rasterizer
m_rasterizer = new RAS_OpenGLRasterizer(m_canvas);
m_rasterizer->Init();
// initialize background colour
setBackground(0, 0, 255);
// refresh lights
refreshLights();
}
// destructor
ImageRender::~ImageRender (void)
{
// release allocated objects
delete m_rasterizer;
delete m_rendertools;
delete m_canvas;
}
// set background color
void ImageRender::setBackground (unsigned char red, unsigned char green, unsigned char blue)
{
m_background[0] = red;
m_background[1] = green;
m_background[2] = blue;
m_rasterizer->SetBackColor(m_background[0], m_background[1], m_background[2], 1.0);
}
// capture image from viewport
void ImageRender::calcImage (unsigned int texId)
{
// setup camera
bool cameraPasive = !m_camera->GetViewport();
// render scene
Render();
// reset camera
if (cameraPasive) m_camera->EnableViewport(false);
// get image from viewport
ImageViewport::calcImage(texId);
}
void ImageRender::Render()
{
//
}
// refresh lights
void ImageRender::refreshLights (void)
{
// clear lights list
//m_rendertools->RemoveAllLights();
// set lights
//for (int idx = 0; idx < scene->GetLightList()->GetCount(); ++idx)
// m_rendertools->AddLight(((KX_LightObject*)(scene->GetLightList()->GetValue(idx)))->GetLightData());
}
// cast Image pointer to ImageRender
inline ImageRender * getImageRender (PyImage * self)
{ return static_cast<ImageRender*>(self->m_image); }
// python methods
// Blender Scene type
BlendType<KX_Scene> sceneType ("KX_Scene");
// Blender Camera type
BlendType<KX_Camera> cameraType ("KX_Camera");
ExceptionID SceneInvalid, CameraInvalid;
ExpDesc SceneInvalidDesc (SceneInvalid, "Scene object is invalid");
ExpDesc CameraInvalidDesc (CameraInvalid, "Camera object is invalid");
// object initialization
static int ImageRender_init (PyObject * pySelf, PyObject * args, PyObject * kwds)
{
// parameters - scene object
PyObject * scene;
// camera object
PyObject * camera;
// parameter keywords
static char *kwlist[] = {"sceneObj", "cameraObj", NULL};
// get parameters
if (!PyArg_ParseTupleAndKeywords(args, kwds, "OO", kwlist, &scene, &camera))
return -1;
try
{
// get scene pointer
KX_Scene * scenePtr (NULL);
if (scene != NULL) scenePtr = sceneType.checkType(scene);
// throw exception if scene is not available
if (scenePtr == NULL) THRWEXCP(SceneInvalid, S_OK);
// get camera pointer
KX_Camera * cameraPtr (NULL);
if (camera != NULL) cameraPtr = cameraType.checkType(camera);
// throw exception if camera is not available
if (cameraPtr == NULL) THRWEXCP(CameraInvalid, S_OK);
// get pointer to image structure
PyImage * self = reinterpret_cast<PyImage*>(pySelf);
// create source object
if (self->m_image != NULL) delete self->m_image;
self->m_image = new ImageRender(scenePtr, cameraPtr);
}
catch (Exception & exp)
{
exp.report();
return -1;
}
// initialization succeded
return 0;
}
// get background color
PyObject * getBackground (PyImage * self, void * closure)
{
return Py_BuildValue("[BBB]", getImageRender(self)->getBackground()[0],
getImageRender(self)->getBackground()[1], getImageRender(self)->getBackground()[2]);
}
// set color
static int setBackground (PyImage * self, PyObject * value, void * closure)
{
// check validity of parameter
if (value == NULL || !PySequence_Check(value) || PySequence_Length(value) != 3
|| !PyInt_Check(PySequence_Fast_GET_ITEM(value, 0))
|| !PyInt_Check(PySequence_Fast_GET_ITEM(value, 1))
|| !PyInt_Check(PySequence_Fast_GET_ITEM(value, 2)))
{
PyErr_SetString(PyExc_TypeError, "The value must be a sequence of 3 ints");
return -1;
}
// set background color
getImageRender(self)->setBackground((unsigned char)(PyInt_AsLong(PySequence_Fast_GET_ITEM(value, 0))),
(unsigned char)(PyInt_AsLong(PySequence_Fast_GET_ITEM(value, 1))),
(unsigned char)(PyInt_AsLong(PySequence_Fast_GET_ITEM(value, 2))));
// success
return 0;
}
// methods structure
static PyMethodDef imageRenderMethods[] =
{ // methods from ImageBase class
{"refresh", (PyCFunction)Image_refresh, METH_NOARGS, "Refresh image - invalidate its current content"},
{NULL}
};
// attributes structure
static PyGetSetDef imageRenderGetSets[] =
{
{"background", (getter)getBackground, (setter)setBackground, "background color", NULL},
// attributes from ImageBase class
{"image", (getter)Image_getImage, NULL, "image data", NULL},
{"size", (getter)Image_getSize, NULL, "image size", NULL},
{"scale", (getter)Image_getScale, (setter)Image_setScale, "fast scale of image (near neighbour)", NULL},
{"flip", (getter)Image_getFlip, (setter)Image_setFlip, "flip image vertically", NULL},
{"filter", (getter)Image_getFilter, (setter)Image_setFilter, "pixel filter", NULL},
{NULL}
};
// define python type
PyTypeObject ImageRenderType =
{
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
"VideoTexture.ImageRender", /*tp_name*/
sizeof(PyImage), /*tp_basicsize*/
0, /*tp_itemsize*/
(destructor)Image_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
"Image source from render", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
imageRenderMethods, /* tp_methods */
0, /* tp_members */
imageRenderGetSets, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)ImageRender_init, /* tp_init */
0, /* tp_alloc */
Image_allocNew, /* tp_new */
};
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