mirror of
https://github.com/TTimo/GtkRadiant.git
synced 2024-11-10 07:11:54 +00:00
459 lines
9.7 KiB
C++
459 lines
9.7 KiB
C++
/*
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GenSurf plugin for GtkRadiant
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Copyright (C) 2001 David Hyde, Loki software and qeradiant.com
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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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#include <stdio.h>
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#include <stdlib.h>
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#ifdef _WIN32
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// cough, cough
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typedef __int32 int32_t;
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typedef unsigned __int16 uint16_t;
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typedef unsigned __int8 uint8_t;
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typedef unsigned __int32 uint32_t;
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typedef __int16 int16_t;
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#endif
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#include <math.h>
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#include "gensurf.h"
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void GenerateBitmapMapping(){
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double value;
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double C0, C1;
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double x, y;
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int i, j;
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int O00,O01,O10,O11;
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int r0, r1, c0, c1;
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int color;
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unsigned char *colors;
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if ( !gbmp.colors ) {
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return;
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}
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colors = gbmp.colors;
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for ( j = 0; j <= NV; j++ )
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{
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y = (double)( j * ( gbmp.height - 1 ) ) / (double)NV;
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r0 = (int)floor( y );
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r1 = (int)ceil( y );
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for ( i = 0; i <= NH; i++ )
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{
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x = (double)( i * ( gbmp.width - 1 ) ) / (double)NH;
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c0 = (int)floor( x );
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c1 = (int)ceil( x );
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O00 = r0 * gbmp.width + c0;
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O01 = r0 * gbmp.width + c1;
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O10 = r1 * gbmp.width + c0;
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O11 = r1 * gbmp.width + c1;
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C0 = (double)colors[O00] + (double)( colors[O01] - colors[O00] ) * ( x - (double)c0 );
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C1 = (double)colors[O10] + (double)( colors[O11] - colors[O10] ) * ( x - (double)c0 );
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color = (int)( C0 + ( C1 - C0 ) * ( y - r0 ) );
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value = CalculateSnapValue( gbmp.black_value + color * ( ( gbmp.white_value - gbmp.black_value ) / 255. ) );
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switch ( Plane )
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{
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case PLANE_XZ0:
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case PLANE_XZ1:
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xyz[i][j].p[1] = value;
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break;
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case PLANE_YZ0:
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case PLANE_YZ1:
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xyz[i][j].p[0] = value;
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break;
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default:
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xyz[i][j].p[2] = value;
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}
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}
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}
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}
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static unsigned char* OpenBitmapFile(){
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#define INVALID_FORMAT do { \
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fprintf( stderr,"%s:%d: Error file '%s' is malformed.\n",__FILE__,__LINE__,gbmp.name ); \
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fclose( fp ); \
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return NULL; \
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} while ( 0 )
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int32_t bmWidth;
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int32_t bmHeight;
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uint16_t bmPlanes;
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uint16_t bmBitsPixel;
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uint8_t m1,m2;
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uint32_t sizeimage;
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int16_t res1,res2;
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int32_t filesize, pixoff;
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int32_t bmisize, compression;
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int32_t xscale, yscale;
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int32_t colors, impcol;
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uint32_t m_bytesRead = 0;
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unsigned char *image;
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FILE *fp;
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fp = fopen( gbmp.name, "rb" );
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if ( fp == NULL ) {
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fprintf( stderr,"Error: Invalid filename '%s'\n",gbmp.name );
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return NULL;
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}
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long rc;
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rc = fread( &m1, 1, 1, fp );
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m_bytesRead++;
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if ( rc == -1 ) {
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fclose( fp );
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return NULL;
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}
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rc = fread( &m2, 1, 1, fp );
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m_bytesRead++;
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if ( ( m1 != 'B' ) || ( m2 != 'M' ) ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint32_t*)&( filesize ),4,1,fp ); m_bytesRead += 4;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint16_t*)&( res1 ),2,1,fp ); m_bytesRead += 2;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint16_t*)&( res2 ),2,1,fp ); m_bytesRead += 2;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint32_t*)&( pixoff ),4,1,fp ); m_bytesRead += 4;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint32_t*)&( bmisize ),4,1,fp ); m_bytesRead += 4;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint32_t *)&( bmWidth ),4,1,fp ); m_bytesRead += 4;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint32_t*)&( bmHeight ),4,1,fp ); m_bytesRead += 4;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint16_t*)&( bmPlanes ),2,1,fp ); m_bytesRead += 2;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint16_t*)&( bmBitsPixel ),2,1,fp ); m_bytesRead += 2;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint32_t*)&( compression ),4,1,fp ); m_bytesRead += 4;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint32_t*)&( sizeimage ),4,1,fp ); m_bytesRead += 4;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint32_t*)&( xscale ),4,1,fp ); m_bytesRead += 4;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint32_t*)&( yscale ),4,1,fp ); m_bytesRead += 4;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint32_t*)&( colors ),4,1,fp ); m_bytesRead += 4;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( (uint32_t*)&( impcol ),4,1,fp ); m_bytesRead += 4;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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if ( bmBitsPixel != 8 ) {
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g_FuncTable.m_pfnMessageBox( g_pWnd, "This is not an 8-bit image. GenSurf can't use it.",
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"Bitmap", MB_ICONEXCLAMATION, NULL );
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INVALID_FORMAT;
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}
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if ( colors == 0 ) {
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colors = 1 << bmBitsPixel;
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}
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if ( bmBitsPixel != 24 ) {
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int i;
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for ( i = 0; i < colors; i++ )
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{
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unsigned char r,g, b, dummy;
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rc = fread( &b, 1, 1, fp );
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m_bytesRead++;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( &g, 1, 1, fp );
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m_bytesRead++;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( &r, 1, 1, fp );
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m_bytesRead++;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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rc = fread( &dummy, 1, 1, fp );
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m_bytesRead++;
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if ( rc != 1 ) {
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INVALID_FORMAT;
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}
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}
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}
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if ( (long)m_bytesRead > pixoff ) {
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INVALID_FORMAT;
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}
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while ( (long)m_bytesRead < pixoff )
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{
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char dummy;
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fread( &dummy,1,1,fp );
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m_bytesRead++;
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}
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int w = bmWidth;
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int h = bmHeight;
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// set the output params
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image = (unsigned char*)malloc( w * h );
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if ( image != NULL ) {
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unsigned char* outbuf = image;
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long row = 0;
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long rowOffset = 0;
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if ( compression == 0 ) { // BI_RGB
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for ( row = 0; row < bmHeight; row++ )
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{
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// which row are we working on?
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rowOffset = (long unsigned)row * w;
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{
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// pixels are packed as 1 , 4 or 8 bit vals. need to unpack them
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int bit_count = 0;
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unsigned long mask = ( 1 << bmBitsPixel ) - 1;
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unsigned char inbyte = 0;
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for ( int col = 0; col < w; col++ )
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{
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int pix = 0;
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// if we need another byte
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if ( bit_count <= 0 ) {
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bit_count = 8;
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if ( fread( &inbyte,1,1,fp ) != 1 ) {
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free( image );
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INVALID_FORMAT;
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}
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m_bytesRead++;
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}
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// keep track of where we are in the bytes
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bit_count -= bmBitsPixel;
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pix = ( inbyte >> bit_count ) & mask;
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// lookup the color from the colormap - stuff it in our buffer
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// swap red and blue
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*( outbuf + rowOffset + col ) = pix;
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}
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// read DWORD padding
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while ( ( m_bytesRead - pixoff ) & 3 )
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{
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char dummy;
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if ( fread( &dummy,1,1,fp ) != 1 ) {
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free( image );
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INVALID_FORMAT;
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}
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m_bytesRead++;
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}
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}
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}
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}
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else // compression != 0
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{
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int i, x = 0;
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unsigned char c, c1 = 0, *pp;
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row = 0;
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pp = outbuf;
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if ( bmBitsPixel == 8 ) {
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while ( row < bmHeight )
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{
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c = getc( fp );
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if ( c ) {
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// encoded mode
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c1 = getc( fp );
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for ( i = 0; i < c; x++, i++ )
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{
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*pp = c1; pp++;
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}
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}
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else
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{
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// c==0x00, escape codes
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c = getc( fp );
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if ( c == 0x00 ) { // end of line
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row++;
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x = 0;
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pp = outbuf + row * bmWidth;
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}
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else if ( c == 0x01 ) {
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break; // end of pic
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}
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else if ( c == 0x02 ) { // delta
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c = getc( fp );
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x += c;
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c = getc( fp );
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row += c;
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pp = outbuf + x + row * bmWidth;
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}
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else // absolute mode
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{
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for ( i = 0; i < c; x++, i++ )
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{
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c1 = getc( fp );
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*pp = c1; pp++;
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}
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if ( c & 1 ) {
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getc( fp ); // odd length run: read an extra pad byte
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}
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}
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}
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}
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}
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else if ( bmBitsPixel == 4 ) {
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while ( row < bmHeight )
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{
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c = getc( fp );
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if ( c ) {
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// encoded mode
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c1 = getc( fp );
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for ( i = 0; i < c; x++, i++ )
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{
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*pp = ( i & 1 ) ? ( c1 & 0x0f ) : ( ( c1 >> 4 ) & 0x0f ); pp++;
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}
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}
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else
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{
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// c==0x00, escape codes
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c = getc( fp );
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if ( c == 0x00 ) { // end of line
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row++;
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x = 0;
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pp = outbuf + bmHeight * bmWidth;
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}
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else if ( c == 0x01 ) {
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break; // end of pic
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}
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else if ( c == 0x02 ) { // delta
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c = getc( fp );
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x += c;
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c = getc( fp );
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row += c;
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pp = outbuf + x + row * bmWidth;
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}
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else // absolute mode
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{
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for ( i = 0; i < c; x++, i++ )
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{
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if ( ( i & 1 ) == 0 ) {
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c1 = getc( fp );
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}
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*pp = ( i & 1 ) ? ( c1 & 0x0f ) : ( ( c1 >> 4 ) & 0x0f ); pp++;
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}
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if ( ( ( c & 3 ) == 1 ) || ( ( c & 3 ) == 2 ) ) {
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getc( fp ); // odd length run: read an extra pad byte
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}
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}
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}
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}
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}
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}
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}
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fclose( fp );
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gbmp.width = w;
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gbmp.height = h;
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if ( gbmp.colors ) {
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free( gbmp.colors );
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}
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gbmp.colors = image;
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return image;
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}
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bool OpenBitmap(){
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OpenBitmapFile();
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if ( !gbmp.colors ) {
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g_print( "failed to load file gbmp %s\n",gbmp.name );
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char Text[256];
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sprintf( Text, "Error opening %s", gbmp.name );
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g_FuncTable.m_pfnMessageBox( g_pWnd, Text, "Bitmap", MB_ICONEXCLAMATION, NULL );
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strcpy( gbmp.name, "" );
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}
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if ( g_pWnd ) {
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gtk_entry_set_text( GTK_ENTRY( g_object_get_data( G_OBJECT( g_pWnd ), "bmp_file" ) ), gbmp.name );
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gtk_widget_set_sensitive( GTK_WIDGET( g_object_get_data( G_OBJECT( g_pWnd ), "bmp_reload" ) ),
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strlen( gbmp.name ) ? TRUE : FALSE );
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UpdatePreview( true );
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}
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return ( gbmp.colors != NULL );
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}
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