/**
 * $Id$
 * ***** 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, 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 *****
 */

#include "RAS_TexVert.h"
#include "MT_Matrix4x4.h"

RAS_TexVert::RAS_TexVert(const MT_Point3& xyz,
						 const MT_Point2& uv,
						 const MT_Point2& uv2,
						 const MT_Vector4& tangent,
						 const unsigned int rgba,
						 const MT_Vector3& normal,
						 const bool flat,
						 const unsigned int origindex)
{
	xyz.getValue(m_localxyz);
	uv.getValue(m_uv1);
	uv2.getValue(m_uv2);
	SetRGBA(rgba);
	SetNormal(normal);
	tangent.getValue(m_tangent);
	m_flag = (flat)? FLAT: 0;
	m_origindex = origindex;
	m_unit = 2;
	m_softBodyIndex = -1;
}

const MT_Point3& RAS_TexVert::xyz()
{
	g_pt3.setValue(m_localxyz);
	return g_pt3;
}

void RAS_TexVert::SetRGBA(const MT_Vector4& rgba)
{
	unsigned char *colp = (unsigned char*) &m_rgba;
	colp[0] = (unsigned char) (rgba[0]*255.0f);
	colp[1] = (unsigned char) (rgba[1]*255.0f);
	colp[2] = (unsigned char) (rgba[2]*255.0f);
	colp[3] = (unsigned char) (rgba[3]*255.0f);
}


void RAS_TexVert::SetXYZ(const MT_Point3& xyz)
{
	xyz.getValue(m_localxyz);
}

void RAS_TexVert::SetXYZ(const float *xyz)
{
	m_localxyz[0]= xyz[0]; m_localxyz[1]= xyz[1]; m_localxyz[2]= xyz[2];
}

void RAS_TexVert::SetUV(const MT_Point2& uv)
{
	uv.getValue(m_uv1);
}

void RAS_TexVert::SetUV2(const MT_Point2& uv)
{
	uv.getValue(m_uv2);
}


void RAS_TexVert::SetRGBA(const unsigned int rgba)
{ 
	m_rgba = rgba;
}


void RAS_TexVert::SetFlag(const short flag)
{
	m_flag = flag;
}

void RAS_TexVert::SetUnit(const unsigned int u)
{
	m_unit = u<=MAX_UNIT?u:MAX_UNIT;
}

void RAS_TexVert::SetNormal(const MT_Vector3& normal)
{
	normal.getValue(m_normal);
}

void RAS_TexVert::SetTangent(const MT_Vector3& tangent)
{
	tangent.getValue(m_tangent);
}

// compare two vertices, and return TRUE if both are almost identical (they can be shared)
#define _VEC_EQUAL3(_v1, _v2) (_v1[0]==_v2[0] && _v1[1]==_v2[1] && _v1[2]==_v2[2])
#define _VEC_EQUAL2(_v1, _v2) (_v1[0]==_v2[0] && _v1[1]==_v2[1])
bool RAS_TexVert::closeTo(const RAS_TexVert* other)
{
	return (m_flag == other->m_flag &&
		m_rgba == other->m_rgba &&
		_VEC_EQUAL3(m_normal, other->m_normal) &&
		_VEC_EQUAL3(m_tangent, other->m_tangent) &&
		_VEC_EQUAL2(m_uv1, other->m_uv1) &&
		_VEC_EQUAL2(m_uv2, other->m_uv2) // p --
		/* we know the verts must be shared so dont need to check this */
		/*&& FAST_MT_fuzzyEqual3(m_localxyz, other->m_localxyz)*/) ;
}

short RAS_TexVert::getFlag() const
{
	return m_flag;
}


unsigned int RAS_TexVert::getUnit() const
{
	return m_unit;
}

void RAS_TexVert::Transform(const MT_Matrix4x4& mat, const MT_Matrix4x4& nmat)
{
	SetXYZ((mat*MT_Vector4(m_localxyz[0], m_localxyz[1], m_localxyz[2], 1.0)).getValue());
	SetNormal((nmat*MT_Vector4(m_normal[0], m_normal[1], m_normal[2], 1.0)).getValue());
	SetTangent((nmat*MT_Vector4(m_tangent[0], m_tangent[1], m_tangent[2], 1.0)).getValue());
}