KX_MeshProxy.cpp

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/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifdef WITH_PYTHON

#include "KX_MeshProxy.h"
#include "RAS_IPolygonMaterial.h"
#include "RAS_MeshObject.h"

#include "KX_VertexProxy.h"
#include "KX_PolyProxy.h"

#include "KX_PolygonMaterial.h"
#include "KX_BlenderMaterial.h"

#include "KX_PyMath.h"
#include "KX_ConvertPhysicsObject.h"

#include "PyObjectPlus.h" 

PyTypeObject KX_MeshProxy::Type = {
    PyVarObject_HEAD_INIT(NULL, 0)
    "KX_MeshProxy",
    sizeof(PyObjectPlus_Proxy),
    0,
    py_base_dealloc,
    0,
    0,
    0,
    0,
    py_base_repr,
    0,0,0,0,0,0,0,0,0,
    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
    0,0,0,0,0,0,0,
    Methods,
    0,
    0,
    &CValue::Type,
    0,0,0,0,0,0,
    py_base_new
};

PyMethodDef KX_MeshProxy::Methods[] = {
{"getMaterialName", (PyCFunction)KX_MeshProxy::sPyGetMaterialName,METH_VARARGS},
{"getTextureName", (PyCFunction)KX_MeshProxy::sPyGetTextureName,METH_VARARGS},
{"getVertexArrayLength", (PyCFunction)KX_MeshProxy::sPyGetVertexArrayLength,METH_VARARGS},
{"getVertex", (PyCFunction)KX_MeshProxy::sPyGetVertex,METH_VARARGS},
{"getPolygon", (PyCFunction)KX_MeshProxy::sPyGetPolygon,METH_VARARGS},
//{"getIndexArrayLength", (PyCFunction)KX_MeshProxy::sPyGetIndexArrayLength,METH_VARARGS},
  {NULL,NULL} //Sentinel
};

PyAttributeDef KX_MeshProxy::Attributes[] = {
    KX_PYATTRIBUTE_RO_FUNCTION("materials",     KX_MeshProxy, pyattr_get_materials),
    KX_PYATTRIBUTE_RO_FUNCTION("numPolygons",   KX_MeshProxy, pyattr_get_numPolygons),
    KX_PYATTRIBUTE_RO_FUNCTION("numMaterials",  KX_MeshProxy, pyattr_get_numMaterials),

    { NULL }    //Sentinel
};

void KX_MeshProxy::SetMeshModified(bool v)
{
    m_meshobj->SetMeshModified(v);
}

KX_MeshProxy::KX_MeshProxy(RAS_MeshObject* mesh)
    : CValue(), m_meshobj(mesh)
{
}

KX_MeshProxy::~KX_MeshProxy()
{
}



// stuff for cvalue related things
CValue*     KX_MeshProxy::Calc(VALUE_OPERATOR op, CValue *val) { return NULL;}
CValue*     KX_MeshProxy::CalcFinal(VALUE_DATA_TYPE dtype, VALUE_OPERATOR op, CValue *val) { return NULL;}  

const STR_String &  KX_MeshProxy::GetText() {return m_meshobj->GetName();};
double      KX_MeshProxy::GetNumber() { return -1;}
STR_String& KX_MeshProxy::GetName() { return m_meshobj->GetName();}
void        KX_MeshProxy::SetName(const char *name) { };
CValue*     KX_MeshProxy::GetReplica() { return NULL;}


// stuff for python integration

PyObject* KX_MeshProxy::PyGetMaterialName(PyObject* args, PyObject* kwds)
{
    int matid= 1;
    STR_String matname;

    if (PyArg_ParseTuple(args,"i:getMaterialName",&matid))
    {
        matname = m_meshobj->GetMaterialName(matid);
    }
    else {
        return NULL;
    }

    return PyUnicode_From_STR_String(matname);

}


PyObject* KX_MeshProxy::PyGetTextureName(PyObject* args, PyObject* kwds)
{
    int matid= 1;
    STR_String matname;

    if (PyArg_ParseTuple(args,"i:getTextureName",&matid))
    {
        matname = m_meshobj->GetTextureName(matid);
    }
    else {
        return NULL;
    }

    return PyUnicode_From_STR_String(matname);
        
}

PyObject* KX_MeshProxy::PyGetVertexArrayLength(PyObject* args, PyObject* kwds)
{
    int matid= 0;
    int length = 0;

    
    if (!PyArg_ParseTuple(args,"i:getVertexArrayLength",&matid))
        return NULL;
    

    RAS_MeshMaterial *mmat = m_meshobj->GetMeshMaterial(matid); /* can be NULL*/
    
    if (mmat)
    {
        RAS_IPolyMaterial* mat = mmat->m_bucket->GetPolyMaterial();
        if (mat)
            length = m_meshobj->NumVertices(mat);
    }
    
    return PyLong_FromSsize_t(length);
}


PyObject* KX_MeshProxy::PyGetVertex(PyObject* args, PyObject* kwds)
{
    int vertexindex;
    int matindex;

    if (!PyArg_ParseTuple(args,"ii:getVertex",&matindex,&vertexindex))
        return NULL;
    
    RAS_TexVert* vertex = m_meshobj->GetVertex(matindex,vertexindex);
    
    if(vertex==NULL) {
        PyErr_SetString(PyExc_ValueError, "mesh.getVertex(mat_idx, vert_idx): KX_MeshProxy, could not get a vertex at the given indices");
        return NULL;
    }
    
    return (new KX_VertexProxy(this, vertex))->NewProxy(true);
}

PyObject* KX_MeshProxy::PyGetPolygon(PyObject* args, PyObject* kwds)
{
    int polyindex= 1;
    PyObject* polyob = NULL;

    if (!PyArg_ParseTuple(args,"i:getPolygon",&polyindex))
        return NULL;
    
    if (polyindex<0 || polyindex >= m_meshobj->NumPolygons())
    {
        PyErr_SetString(PyExc_AttributeError, "mesh.getPolygon(int): KX_MeshProxy, invalid polygon index");
        return NULL;
    }
        

    RAS_Polygon* polygon = m_meshobj->GetPolygon(polyindex);
    if (polygon)
    {
        polyob = (new KX_PolyProxy(m_meshobj, polygon))->NewProxy(true);
    }
    else {
        PyErr_SetString(PyExc_AttributeError, "mesh.getPolygon(int): KX_MeshProxy, polygon is NULL, unknown reason");
    }
    return polyob;
}

PyObject* KX_MeshProxy::pyattr_get_materials(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
    KX_MeshProxy* self= static_cast<KX_MeshProxy*>(self_v);
    
    int tot= self->m_meshobj->NumMaterials();
    int i;
    
    PyObject *materials = PyList_New( tot );
    
    list<RAS_MeshMaterial>::iterator mit= self->m_meshobj->GetFirstMaterial();
    
    
    for(i=0; i<tot; mit++, i++) {
        RAS_IPolyMaterial *polymat = mit->m_bucket->GetPolyMaterial();   
        
        /* Why do we need to check for RAS_BLENDERMAT if both are cast to a (PyObject*)? - Campbell */
        if(polymat->GetFlag() & RAS_BLENDERMAT)      
        {    
            KX_BlenderMaterial *mat = static_cast<KX_BlenderMaterial*>(polymat);     
            PyList_SET_ITEM(materials, i, mat->GetProxy());
        }
        else {  
            KX_PolygonMaterial *mat = static_cast<KX_PolygonMaterial*>(polymat);
            PyList_SET_ITEM(materials, i, mat->GetProxy());
        }
    }   
    return materials;
}

PyObject * KX_MeshProxy::pyattr_get_numMaterials(void * selfv, const KX_PYATTRIBUTE_DEF * attrdef)
{
    KX_MeshProxy * self = static_cast<KX_MeshProxy *> (selfv);
    return PyLong_FromSsize_t(self->m_meshobj->NumMaterials());
}

PyObject * KX_MeshProxy::pyattr_get_numPolygons(void * selfv, const KX_PYATTRIBUTE_DEF * attrdef)
{
    KX_MeshProxy * self = static_cast<KX_MeshProxy *> (selfv);
    return PyLong_FromSsize_t(self->m_meshobj->NumPolygons());
}

/* a close copy of ConvertPythonToGameObject but for meshes */
bool ConvertPythonToMesh(PyObject * value, RAS_MeshObject **object, bool py_none_ok, const char *error_prefix)
{
    if (value==NULL) {
        PyErr_Format(PyExc_TypeError, "%s, python pointer NULL, should never happen", error_prefix);
        *object = NULL;
        return false;
    }
        
    if (value==Py_None) {
        *object = NULL;
        
        if (py_none_ok) {
            return true;
        } else {
            PyErr_Format(PyExc_TypeError, "%s, expected KX_MeshProxy or a KX_MeshProxy name, None is invalid", error_prefix);
            return false;
        }
    }
    
    if (PyUnicode_Check(value)) {
        *object = (RAS_MeshObject*)SCA_ILogicBrick::m_sCurrentLogicManager->GetMeshByName(STR_String( _PyUnicode_AsString(value) ));
        
        if (*object) {
            return true;
        } else {
            PyErr_Format(PyExc_ValueError, "%s, requested name \"%s\" did not match any KX_MeshProxy in this scene", error_prefix, _PyUnicode_AsString(value));
            return false;
        }
    }
    
    if (PyObject_TypeCheck(value, &KX_MeshProxy::Type)) {
        KX_MeshProxy *kx_mesh = static_cast<KX_MeshProxy*>BGE_PROXY_REF(value);
        
        /* sets the error */
        if (kx_mesh==NULL) {
            PyErr_Format(PyExc_SystemError, "%s, " BGE_PROXY_ERROR_MSG, error_prefix);
            return false;
        }       
        
        *object = kx_mesh->GetMesh();
        return true;
    }
    
    *object = NULL;
    
    if (py_none_ok) {
        PyErr_Format(PyExc_TypeError, "%s, expect a KX_MeshProxy, a string or None", error_prefix);
    } else {
        PyErr_Format(PyExc_TypeError, "%s, expect a KX_MeshProxy or a string", error_prefix);
    }
    
    return false;
}

#endif // WITH_PYTHON