mirror of
https://github.com/TTimo/GtkRadiant.git
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256 lines
6.3 KiB
C++
256 lines
6.3 KiB
C++
/*
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BobToolz plugin for GtkRadiant
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Copyright (C) 2001 Gordon Biggans
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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// DPlane.cpp: implementation of the DPlane class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "StdAfx.h"
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#include "DPlane.h"
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#include "DWinding.h"
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#include "misc.h"
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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DPlane::DPlane( vec3_t va, vec3_t vb, vec3_t vc, _QERFaceData* texData ){
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MakeNormal( va, vb, vc, normal );
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if ( VectorNormalize( normal, normal ) == 0 ) { // normalizes and returns length
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Sys_ERROR( "DPlane::DPlane: Bad Normal.\n" );
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}
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_d = ( normal[0] * va[0] ) + ( normal[1] * va[1] ) + ( normal[2] * va[2] );
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VectorCopy( va, points[0] );
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VectorCopy( vb, points[1] );
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VectorCopy( vc, points[2] );
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m_bChkOk = TRUE;
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if ( texData ) {
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memcpy( &texInfo, texData, sizeof( _QERFaceData ) );
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}
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else{
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FillDefaultTexture( &texInfo, points[0], points[1], points[2], "textures/common/caulk" );
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}
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}
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DPlane::~DPlane(){
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}
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//////////////////////////////////////////////////////////////////////
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// Implementation
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//////////////////////////////////////////////////////////////////////
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vec_t DPlane::DistanceToPoint( vec3_t pnt ){
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vec3_t tmp;
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VectorSubtract( pnt, points[0], tmp );
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return DotProduct( tmp, normal );
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}
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bool DPlane::PlaneIntersection( DPlane *pl1, DPlane *pl2, vec3_t out ){
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float a1, a2, a3;
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float b1, b2, b3;
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float c1, c2, c3;
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a1 = normal[0]; a2 = normal[1]; a3 = normal[2];
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b1 = pl1->normal[0]; b2 = pl1->normal[1]; b3 = pl1->normal[2];
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c1 = pl2->normal[0]; c2 = pl2->normal[1]; c3 = pl2->normal[2];
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float d = Determinant3x3( a1, a2, a3, b1, b2, b3, c1, c2, c3 );
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if ( d == 0 ) {
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return FALSE;
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}
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float v1 = _d;
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float v2 = pl1->_d;
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float v3 = pl2->_d;
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float d1 = Determinant3x3( v1, a2, a3, v2, b2, b3, v3, c2, c3 );
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float d2 = Determinant3x3( a1, v1, a3, b1, v2, b3, c1, v3, c3 );
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float d3 = Determinant3x3( a1, a2, v1, b1, b2, v2, c1, c2, v3 );
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out[0] = d1 / d;
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out[1] = d2 / d;
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out[2] = d3 / d;
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return TRUE;
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}
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bool DPlane::IsRedundant( list<DPoint*>& pointList ){
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int cnt = 0;
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//list<DPoint *>::const_iterator point=pointList.begin();
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for ( list<DPoint *>::const_iterator point = pointList.begin(); point != pointList.end(); point++ )
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{
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if ( fabs( DistanceToPoint( ( *point )->_pnt ) ) < MAX_ROUND_ERROR ) {
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cnt++;
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}
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if ( cnt == 3 ) {
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return FALSE;
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}
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}
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return TRUE;
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}
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bool DPlane::operator ==( DPlane& other ){
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vec3_t chk;
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VectorSubtract( other.normal, normal, chk );
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if ( fabs( VectorLength( chk ) ) > MAX_ROUND_ERROR ) {
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return FALSE;
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}
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if ( fabs( other._d - _d ) > MAX_ROUND_ERROR ) {
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return FALSE;
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}
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return TRUE;
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}
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bool DPlane::operator !=( DPlane& other ){
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vec3_t chk;
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VectorAdd( other.normal, normal, chk );
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if ( fabs( VectorLength( chk ) ) > MAX_ROUND_ERROR ) {
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return FALSE;
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}
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return TRUE;
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}
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DWinding* DPlane::BaseWindingForPlane(){
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int i, x;
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vec_t max, v;
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vec3_t org, vright, vup;
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// find the major axis
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max = -131072;
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x = -1;
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for ( i = 0 ; i < 3; i++ )
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{
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v = (float)fabs( normal[i] );
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if ( v > max ) {
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x = i;
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max = v;
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}
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}
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if ( x == -1 ) {
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Sys_Printf( "BaseWindingForPlane: no axis found" );
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}
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VectorCopy( vec3_origin, vup );
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switch ( x )
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{
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case 0:
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case 1:
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vup[2] = 1;
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break;
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case 2:
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vup[0] = 1;
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break;
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}
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v = DotProduct( vup, normal );
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VectorMA( vup, -v, normal, vup );
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VectorNormalize( vup, vup );
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VectorScale( normal, _d, org );
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CrossProduct( vup, normal, vright );
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VectorScale( vup, 131072, vup );
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VectorScale( vright, 131072, vright );
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// project a really big axis aligned box onto the plane
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DWinding* w = new DWinding;
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w->AllocWinding( 4 );
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VectorSubtract( org, vright, w->p[0] );
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VectorAdd( w->p[0], vup, w->p[0] );
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VectorAdd( org, vright, w->p[1] );
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VectorAdd( w->p[1], vup, w->p[1] );
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VectorAdd( org, vright, w->p[2] );
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VectorSubtract( w->p[2], vup, w->p[2] );
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VectorSubtract( org, vright, w->p[3] );
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VectorSubtract( w->p[3], vup, w->p[3] );
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return w;
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}
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void DPlane::Rebuild(){
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vec3_t v1, v2;
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VectorSubtract( points[0], points[1], v1 );
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VectorSubtract( points[2], points[1], v2 );
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CrossProduct( v1, v2, normal );
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if ( VectorNormalize( normal, normal ) == 0 ) { // normalizes and returns length
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Sys_ERROR( "DPlane::Rebuild: Bad Normal.\n" );
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}
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_d = ( normal[0] * points[0][0] ) + ( normal[1] * points[0][1] ) + ( normal[2] * points[0][2] );
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VectorCopy( points[0], texInfo.m_v1 );
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VectorCopy( points[1], texInfo.m_v2 );
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VectorCopy( points[2], texInfo.m_v3 );
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}
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bool DPlane::AddToBrush_t( brush_t *brush ){
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if ( m_bChkOk || !strcmp( texInfo.m_TextureName, "textures/common/caulk" ) ) {
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g_FuncTable.m_pfnAddFaceData( brush, &texInfo );
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return FALSE;
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}
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strcpy( texInfo.m_TextureName, "textures/common/caulk" );
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g_FuncTable.m_pfnAddFaceData( brush, &texInfo );
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return TRUE;
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}
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void DPlane::ScaleTexture()
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{ }
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DPlane::DPlane( vec3_t va, vec3_t vb, vec3_t vc, const char* textureName, bool bDetail ){
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vec3_t v1, v2;
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VectorSubtract( va, vb, v1 );
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VectorSubtract( vc, vb, v2 );
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CrossProduct( v1, v2, normal );
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if ( VectorNormalize( normal, normal ) == 0 ) { // normalizes and returns length
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Sys_ERROR( "DPlane::DPlane: Bad Normal.\n" );
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}
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_d = ( normal[0] * va[0] ) + ( normal[1] * va[1] ) + ( normal[2] * va[2] );
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VectorCopy( va, points[0] );
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VectorCopy( vb, points[1] );
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VectorCopy( vc, points[2] );
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m_bChkOk = TRUE;
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FillDefaultTexture( &texInfo, points[0], points[1], points[2], textureName );
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if ( bDetail ) {
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texInfo.m_nContents |= FACE_DETAIL;
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}
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}
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