gtkradiant/contrib/bkgrnd2d/bkgrnd2d.cpp

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/*
Copyright (C) 1999-2007 id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.
This file is part of GtkRadiant.
GtkRadiant 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.
GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
//
// bkgrnd2d Plugin
//
// Code by reyalP aka Reed Mideke
//
// Based on various other plugins
//
#include "bkgrnd2d.h"
CBackgroundRender render;
CBackgroundImage backgroundXY( XY ),backgroundXZ( XZ ),backgroundYZ( YZ );
CBackgroundRender::CBackgroundRender(){
refCount = 1;
}
CBackgroundRender::~CBackgroundRender(){
}
void CBackgroundRender::Register(){
g_QglTable.m_pfnHookGL2DWindow( this );
}
void CBackgroundRender::Draw2D( VIEWTYPE vt ){
switch ( vt )
{
case XY:
backgroundXY.Render();
break;
case XZ:
backgroundXZ.Render();
break;
case YZ:
backgroundYZ.Render();
break;
}
}
CBackgroundImage::CBackgroundImage( VIEWTYPE vt ){
m_tex = NULL;
m_alpha = 0.5;
// TODO, sensible defaults ? Or not show until we have extents ?
m_xmin = m_ymin = 0.0f;
m_xmax = m_ymax = 0.0f;
m_bActive = false;
m_vt = vt;
switch ( m_vt )
{
case XY:
m_ix = 0;
m_iy = 1;
break;
case XZ:
m_ix = 0;
m_iy = 2;
break;
case YZ:
m_ix = 1;
m_iy = 2;
break;
}
}
/*
* should cleanup, but I don't think we can be sure it happens before our
* interfaces are gone
CBackgroundImage::~CBackgroundImage()
{
}
*/
void CBackgroundImage::Cleanup(){
if ( m_tex ) {
g_QglTable.m_pfn_qglDeleteTextures( 1,&m_tex->texture_number );
g_free( m_tex );
m_tex = NULL;
}
}
void CBackgroundImage::Render(){
if ( !m_bActive || !Valid() ) {
return;
}
g_QglTable.m_pfn_qglPushAttrib( GL_ALL_ATTRIB_BITS );
g_QglTable.m_pfn_qglEnable( GL_TEXTURE_2D );
g_QglTable.m_pfn_qglEnable( GL_BLEND );
g_QglTable.m_pfn_qglBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
g_QglTable.m_pfn_qglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
g_QglTable.m_pfn_qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP );
g_QglTable.m_pfn_qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP );
g_QglTable.m_pfn_qglPolygonMode( GL_FRONT,GL_FILL );
// TODO, just so we can tell if we end up going the wrong way
// g_QglTable.m_pfn_qglPolygonMode(GL_BACK,GL_LINE);
// TODO any other state we should not assume ?
g_QglTable.m_pfn_qglBindTexture( GL_TEXTURE_2D, m_tex->texture_number );
g_QglTable.m_pfn_qglBegin( GL_QUADS );
g_QglTable.m_pfn_qglColor4f( 1.0,1.0,1.0,m_alpha );
g_QglTable.m_pfn_qglTexCoord2f( 0.0,1.0 );
g_QglTable.m_pfn_qglVertex2f( m_xmin,m_ymin );
g_QglTable.m_pfn_qglTexCoord2f( 1.0,1.0 );
g_QglTable.m_pfn_qglVertex2f( m_xmax,m_ymin );
g_QglTable.m_pfn_qglTexCoord2f( 1.0,0.0 );
g_QglTable.m_pfn_qglVertex2f( m_xmax,m_ymax );
g_QglTable.m_pfn_qglTexCoord2f( 0.0,0.0 );
g_QglTable.m_pfn_qglVertex2f( m_xmin,m_ymax );
g_QglTable.m_pfn_qglEnd();
g_QglTable.m_pfn_qglBindTexture( GL_TEXTURE_2D, 0 );
g_QglTable.m_pfn_qglPopAttrib();
}
bool CBackgroundImage::Load( const char *filename ){
qtexture_t *newtex;
unsigned char *image = NULL; // gets allocated with what ? g_malloc
int width = 0, height = 0;
g_FuncTable.m_pfnLoadImage( filename,&image,&width,&height );
if ( !image ) {
Syn_Printf( MSG_WARN "load %s failed\n",filename );
return false;
}
// just in case we want to build for an old version
#ifdef BKGRND2D_JPG_WORKAROUND
if ( strlen( filename ) > 4 && !strcmp( ".jpg",filename + strlen( filename ) - 4 ) ) {
Syn_Printf( MSG_PREFIX ".jpg workaround, clearing alpha channel\n" );
int size = width * height * 4;
int i;
for ( i = 3; i < size; i += 4 ) {
image[i] = 255;
}
}
#endif
//TODO bug for stored texture size
//TODO whose gl context are we in, anyway ?
newtex = g_FuncTable.m_pfnLoadTextureRGBA( image,width,height );
g_free( image );
if ( !newtex ) {
Syn_Printf( MSG_WARN "image to texture failed\n" );
return false;
}
Cleanup();
m_tex = newtex;
g_FuncTable.m_pfnSysUpdateWindows( W_XY );
return true;
}
bool CBackgroundImage::SetExtentsMM(){
entity_s *worldentity;
const char *val;
int xmin = 0, ymin = 0, xmax = 0, ymax = 0;
worldentity = (entity_s *)g_FuncTable.m_pfnGetEntityHandle( 0 );
if ( !worldentity ) {
Syn_Printf( MSG_WARN "SetExtentsMM worldspawn not found\n" );
return false;
}
//TODO val is not NULL even if key does not exist
val = g_EntityTable.m_pfnValueForKey( worldentity,"mapcoordsmins" );
if ( !val || !val[0] ) {
Syn_Printf( MSG_WARN "SetExtentsMM mapcoordsmins not found\n" );
return false;
}
// we could be more robust
// note contortions due to splashs strange idea of min and max
if ( sscanf( val, "%d %d",&xmin,&ymax ) != 2 ) {
Syn_Printf( MSG_WARN "SetExtentsMM mapcoordsmins malformed\n" );
return false;
}
val = g_EntityTable.m_pfnValueForKey( worldentity,"mapcoordsmaxs" );
if ( !val || !val[0] ) {
Syn_Printf( MSG_WARN "SetExtentsMM mapcoordsmaxs not found\n" );
return false;
}
if ( sscanf( val, "%d %d",&xmax,&ymin ) != 2 ) {
Syn_Printf( MSG_WARN "SetExtentsMM mapcoordsmaxs malformed\n" );
return false;
}
//might do sanity check before we commit
m_xmin = (float)xmin;
m_ymin = (float)ymin;
m_xmax = (float)xmax;
m_ymax = (float)ymax;
g_FuncTable.m_pfnSysUpdateWindows( W_XY );
return true;
}
// TODO, this should just be exported from core
// ripped directly from radiant/select.cpp:Select_GetBounds
//
static bool get_selection_bounds( vec3_t mins, vec3_t maxs ){
brush_t *b;
int i;
brush_t *selected_brushes = g_DataTable.m_pfnSelectedBrushes();
//TODO should never happen
if ( !selected_brushes ) {
Sys_Printf( MSG_PREFIX "selected_brushes = NULL\n" );
return false;
}
// this should mean no selection
if ( selected_brushes == selected_brushes->next ) {
Sys_Printf( MSG_PREFIX "nothing selected\n" );
return false;
}
for ( i = 0 ; i < 3 ; i++ )
{
mins[i] = 99999;
maxs[i] = -99999;
}
for ( b = selected_brushes->next ; b != selected_brushes ; b = b->next )
{
if ( b->owner->eclass->fixedsize ) {
for ( i = 0 ; i < 3 ; i++ )
{
if ( b->owner->origin[i] < mins[i] ) {
mins[i] = b->owner->origin[i];
}
if ( b->owner->origin[i] > maxs[i] ) {
maxs[i] = b->owner->origin[i];
}
}
}
else
{
for ( i = 0 ; i < 3 ; i++ )
{
if ( b->mins[i] < mins[i] ) {
mins[i] = b->mins[i];
}
if ( b->maxs[i] > maxs[i] ) {
maxs[i] = b->maxs[i];
}
}
}
}
return true;
}
bool CBackgroundImage::SetExtentsSel(){
vec3_t mins,maxs;
if ( !get_selection_bounds( mins,maxs ) ) {
return false;
}
if ( ( (int)mins[m_ix] == (int)maxs[m_ix] ) ||
( (int)mins[m_iy] == (int)maxs[m_iy] ) ) {
Syn_Printf( MSG_PREFIX "tiny selection\n" );
return false;
}
m_xmin = mins[m_ix];
m_ymin = mins[m_iy];
m_xmax = maxs[m_ix];
m_ymax = maxs[m_iy];
g_FuncTable.m_pfnSysUpdateWindows( W_XY );
return true;
}