/*
 * NodeIndexedFaceSet.cpp
 *
 * Copyright (C) 1999 Stephen F. White
 * 
 * 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 (see the file "COPYING" for details); if 
 * not, write to the Free Software Foundation, Inc., 675 Mass Ave, 
 * Cambridge, MA 02139, USA.
 */

#include <stdio.h>
#include <string.h>
#include "stdafx.h"

#include "NodeIndexedFaceSet.h"
#include "Proto.h"
#include "Scene.h"
#include "FieldValue.h"
#include "Node.h"
#include "Mesh.h"
#include "Face.h"
#include "Vec3f.h"
#include "NodeColor.h"
#include "NodeCoordinate.h"
#include "NodeNormal.h"
#include "NodeTextureCoordinate.h"
#include "NodeIndexedLineSet.h"

ProtoIndexedFaceSet::ProtoIndexedFaceSet(Scene *scene)
  : Proto(scene, "IndexedFaceSet")
{
    color.set(
          addExposedField(SFNODE, "color", new SFNode(NULL), NODE_COLOR));
    coord.set(
          addExposedField(SFNODE, "coord", new SFNode(NULL), NODE_COORDINATE));
    normal.set(
          addExposedField(SFNODE, "normal", new SFNode(NULL), NODE_NORMAL));
    texCoord.set(
          addExposedField(SFNODE, "texCoord", new SFNode(NULL), 
                          TEXTURE_COORDINATE_NODE));
    ccw.set(
          addField(SFBOOL, "ccw", new SFBool(true)));
    colorIndex.set(
          addField(MFINT32, "colorIndex", new MFInt32(), new SFInt32(-1)));
    colorPerVertex.set(
          addField(SFBOOL, "colorPerVertex", new SFBool(true)));
    convex.set(
          addField(SFBOOL, "convex", new SFBool(true)));
    coordIndex.set(
          addField(MFINT32, "coordIndex", new MFInt32(), new SFInt32(-1)));
    creaseAngle.set(
          addField(SFFLOAT, "creaseAngle", new SFFloat(0.0), 
                   new SFFloat(0.0f)));
    normalIndex.set(
          addField(MFINT32, "normalIndex", new MFInt32(), new SFInt32(-1)));
    normalPerVertex.set(
          addField(SFBOOL, "normalPerVertex", new SFBool(true)));
    solid.set(
          addField(SFBOOL, "solid", new SFBool(true)));
    texCoordIndex.set(
          addField(MFINT32, "texCoordIndex", new MFInt32(), new SFInt32(-1)));

    addEventIn(MFINT32, "set_colorIndex", 0, colorIndex);
    addEventIn(MFINT32, "set_coordIndex", 0, coordIndex);
    addEventIn(MFINT32, "set_normalIndex", 0, normalIndex);
    addEventIn(MFINT32, "set_texCoordIndex", 0, texCoordIndex);
}

Node *
ProtoIndexedFaceSet::create(Scene *scene)
{ 
    return new NodeIndexedFaceSet(scene, this); 
}

NodeIndexedFaceSet::NodeIndexedFaceSet(Scene *scene, Proto *def)
  : MeshBasedNode(scene, def)
{
    _mesh = NULL;
    _meshDirty = true;
}

NodeIndexedFaceSet::~NodeIndexedFaceSet()
{
    delete _mesh;
}

void
NodeIndexedFaceSet::setField(int index, FieldValue *value)
{
    _meshDirty = true;
    Node::setField(index, value);
}

MFVec3f *
NodeIndexedFaceSet::getCoordinates() 
{
    Node       *ncoord = coord()->getValue();
    if (ncoord == NULL)
        return NULL;
    else
        return ((NodeCoordinate *)ncoord)->point();
}

MFInt32 *
NodeIndexedFaceSet::getCoordIndex()
{
    return coordIndex();
}

MFInt32 *
NodeIndexedFaceSet::getColorIndex()
{
    return colorIndex();
}

MFInt32 *
NodeIndexedFaceSet::getNormalIndex()
{
    return normalIndex();
}

MFVec2f *
NodeIndexedFaceSet::getTextureCoordinates()
{
    Node *ntexCoord = texCoord()->getValue();
    if (ntexCoord == NULL)
        return NULL;
    else
        return ((NodeTextureCoordinate *)ntexCoord)->point();
}

MFInt32 *
NodeIndexedFaceSet::getTexCoordIndex()
{
    return texCoordIndex();
}

void
NodeIndexedFaceSet::createMesh()
{
    Node       *coord = ((SFNode *) getField(coord_Index(),true))->getValue();
//    bool	bcolorPerVertex = colorPerVertex()->getValue();
//    bool	bconvex = convex()->getValue();
    MFInt32    *colorIndex = getColorIndex();
    MFInt32    *coordIndex = getCoordIndex();
    MFInt32    *normalIndex = getNormalIndex();
    MFInt32    *texCoordIndex = getTexCoordIndex();
   
    if (!coord || ((NodeCoordinate *) coord)->point()->getType() != MFVEC3F)
	return;

    MFVec3f    *coords = ((NodeCoordinate *)coord)->point();
    MFVec3f    *normals = NULL;
    MFColor    *colors = NULL;
    MFVec2f    *texCoords = NULL;

    if (normal()->getValue())
        if (normal()->getValue()->getType() == NODE_NORMAL)
	    normals = ((NodeNormal *)(normal()->getValue()))->vector();
    
    if (color()->getValue()) 
        if (color()->getValue()->getType() == NODE_COLOR) 
	    colors = ((NodeColor *)(color()->getValue()))->color();
    
    if (texCoord()->getValue()) 
        if (texCoord()->getValue()->getType() == NODE_TEXTURE_COORDINATE)
	    texCoords = ((NodeTextureCoordinate *)(texCoord()->getValue()))
                         ->point();
    
    if (colorIndex->getSize() != coordIndex->getSize()) {
	colorIndex = coordIndex;
    }
    if (texCoordIndex->getSize() != coordIndex->getSize()) {
	texCoordIndex = coordIndex;
    }
    if (!texCoord()->getValue()) {
	texCoords = generateTextureCoordinates(coords, texCoordIndex);
    }
    if (normalIndex->getSize() != coordIndex->getSize()) {
	normalIndex = coordIndex;
    }
    int meshFlags = 0;
    if (ccw()->getValue())
        meshFlags |= MESH_CCW;
    if (solid()->getValue())
        meshFlags |= MESH_SOLID;
    if (convex()->getValue())
        meshFlags |= MESH_CONVEX;
    if (normalPerVertex()->getValue())
        meshFlags |= MESH_NORMAL_PER_VERTEX;

    if (_mesh)
        delete _mesh;
    _mesh = new Mesh(coords, coordIndex, normals, normalIndex, colors, 
                     colorIndex, texCoords, texCoordIndex,
		     creaseAngle()->getValue(), meshFlags);
}

MFVec3f *
NodeIndexedFaceSet::getSmoothNormals(void)
{
    if (_mesh == NULL)
        return NULL;
    MFVec3f *v = _mesh->getNormals();
    
    if (v != NULL) {
        v =  new MFVec3f((float *)((MFVec3f *)v->copy())->getValues(), 
                         v->getSize());
    }
    return v;
}

MFInt32 *
NodeIndexedFaceSet::getSmoothNormalIndex(void)
{
    if (_mesh == NULL)
        return NULL;
    MFInt32 *i = _mesh->getNormalIndex();
    
    if (i != NULL) {
        i =  new MFInt32((int *)((MFInt32 *)i->copy())->getValues(), 
                         i->getSize());
    }
    return i;
}

Node * 
NodeIndexedFaceSet::toIndexedLineSet(void)
{
    if (_mesh == NULL)
        return NULL;
    NodeCoordinate *ncoord = (NodeCoordinate *)_scene->createNode("Coordinate");
    ncoord->point(new MFVec3f(*(_mesh->getVertices())));
    NodeIndexedLineSet *node = (NodeIndexedLineSet *)
                               _scene->createNode("IndexedLineSet");
    node->coord(new SFNode(ncoord));
    node->coordIndex(new MFInt32(*(_mesh->getCoordIndex())));
    return node;
}

void
NodeIndexedFaceSet::flip(int index)
{
    NodeCoordinate *ncoord = (NodeCoordinate *)coord()->getValue();
    if (ncoord)
        if (ncoord->getType() == NODE_COORDINATE) {
	    MFVec3f *coords = ncoord->point();
            if (coords != NULL)
                coords->flip(index);
        }
    NodeNormal *nnormal = (NodeNormal *)normal()->getValue();
    if (nnormal)
        if (nnormal->getType() == NODE_NORMAL) {
	    MFVec3f *normals = nnormal->vector();
            if (normals != NULL)
                normals->flip(index);
        }
    SFBool *bccw = new SFBool(!(ccw()->getValue()));
    ccw(bccw);
    _meshDirty = true;
}