/********************************************************************************
 *                                                                              *
 * This file is part of IfcOpenShell.                                           *
 *                                                                              *
 * IfcOpenShell is free software: you can redistribute it and/or modify         *
 * it under the terms of the Lesser GNU General Public License as published by  *
 * the Free Software Foundation, either version 3.0 of the License, or          *
 * (at your option) any later version.                                          *
 *                                                                              *
 * IfcOpenShell 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                 *
 * Lesser GNU General Public License for more details.                          *
 *                                                                              *
 * You should have received a copy of the Lesser GNU General Public License     *
 * along with this program. If not, see <http://www.gnu.org/licenses/>.         *
 *                                                                              *
 ********************************************************************************/

/********************************************************************************
 *                                                                              *
 * This is a JNI interface to IfcOpenShell for use with the open source         *
 * http://BIMserver.org                                                         *
 *                                                                              *
 ********************************************************************************/

#include "org_ifcopenshell_IfcOpenShellModel.h"
#include "../ifcgeom/IfcGeomObjects.h"

bool has_more = false;

JNIEXPORT jobject JNICALL Java_org_ifcopenshell_IfcOpenShellModel_getGeometry (JNIEnv * env, jobject) {
  if ( ! has_more ) return 0;
  jclass class_def = env->FindClass ("org/ifcopenshell/IfcGeomObject");
  if ( ! class_def ) return 0;
  jmethodID jconstructor = env->GetMethodID(class_def, "<init>", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;[I[F[F)V");
  if ( ! jconstructor ) return 0;
  const IfcGeomObjects::IfcGeomObject* o = IfcGeomObjects::Get();
  
  jstring name = env->NewStringUTF(o->name.c_str());
  jstring type = env->NewStringUTF(o->type.c_str());
  jstring guid = env->NewStringUTF(o->guid.c_str());
  
  jintArray indices = env->NewIntArray(o->mesh->faces.size());
  jfloatArray positions = env->NewFloatArray(o->mesh->verts.size());
  jfloatArray normals = env->NewFloatArray(o->mesh->verts.size());
  
  env->SetIntArrayRegion(indices,0,o->mesh->faces.size(),(jint*) &o->mesh->faces[0]);
  env->SetFloatArrayRegion(positions,0,o->mesh->verts.size(),(jfloat*) &o->mesh->verts[0]);
  
  jobject return_obj = env->NewObject(class_def, jconstructor, name, type, guid, indices, positions, normals);
  
  env->DeleteLocalRef(name);
  env->DeleteLocalRef(type);
  env->DeleteLocalRef(guid);
  env->DeleteLocalRef(indices);
  env->DeleteLocalRef(positions);
  env->DeleteLocalRef(normals);
  env->DeleteLocalRef(class_def);

  has_more = IfcGeomObjects::Next();
  if ( ! has_more ) IfcGeomObjects::CleanUp();

  return return_obj;
}

JNIEXPORT bool JNICALL Java_org_ifcopenshell_IfcOpenShellModel_setIfcData (JNIEnv * env, jobject, jbyteArray jdata) {
  void* data = env->GetByteArrayElements(jdata, NULL);
  const int length = env->GetArrayLength(jdata);
  if ( ! data || ! length ) return false;
  return has_more = IfcGeomObjects::Init(data,length);
}