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gtkradiant/contrib/gtkgensurf/view.cpp
Timothee TTimo Besset 830125fad0 uncrustify! now the code is only ugly on the *inside*
2012-03-17 15:01:54 -05:00

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/*
GenSurf plugin for GtkRadiant
Copyright (C) 2001 David Hyde, Loki software and qeradiant.com
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include "gensurf.h"
#undef ISOMETRIC
extern double backface;
extern double dh, dv;
extern double xmin,xmax,ymin,ymax,zmin,zmax;
double SF, SFG; // Graphics scale factors
double XLo, XHi, YLo, YHi, ZLo, ZHi;
double yaw,roll;
double elevation,azimuth;
int cxChar = 10, cyChar = 16;
int X0, Y0;
int X0G, Y0G;
static RECT rcCoord; // where X= Y= is drawn
static RECT rcGrid; // rectangle within rcLower that forms the border of the grid, plus
// a 3 pixel slop.
static RECT rcLower; // lower half of window, where plan view is drawn
static RECT rcUpper; // upper half or entire window, where isometric projection is drawn
void vertex_selected();
void texfont_init();
void texfont_write( const char *text, float l, float t );
#define PEN_GRID { \
g_GLTable.m_pfn_qglLineWidth( 1 ); \
g_GLTable.m_pfn_qglColor3f( 0, 1, 0 ); \
g_GLTable.m_pfn_qglDisable( GL_LINE_STIPPLE ); }
#define PEN_RED { \
g_GLTable.m_pfn_qglLineWidth( 2 ); \
g_GLTable.m_pfn_qglColor3f( 1, 0, 0 ); \
g_GLTable.m_pfn_qglDisable( GL_LINE_STIPPLE ); }
#define PEN_DASH { \
g_GLTable.m_pfn_qglLineWidth( 1 ); \
g_GLTable.m_pfn_qglColor3f( 0, 1, 0 ); \
g_GLTable.m_pfn_qglLineStipple( 1, 0xF0F0 ); \
g_GLTable.m_pfn_qglEnable( GL_LINE_STIPPLE ); }
#define DRAW_QUAD( rc,r,g,b ) { \
g_GLTable.m_pfn_qglBegin( GL_QUADS ); \
g_GLTable.m_pfn_qglColor3f( 0,1,0 ); \
g_GLTable.m_pfn_qglVertex2f( rc.left - 1, rc.bottom ); \
g_GLTable.m_pfn_qglVertex2f( rc.right, rc.bottom ); \
g_GLTable.m_pfn_qglVertex2f( rc.right, rc.top + 1 ); \
g_GLTable.m_pfn_qglVertex2f( rc.left - 1, rc.top + 1 ); \
g_GLTable.m_pfn_qglColor3f( r,g,b ); \
g_GLTable.m_pfn_qglVertex2f( rc.left, rc.bottom + 1 ); \
g_GLTable.m_pfn_qglVertex2f( rc.right - 1, rc.bottom + 1 ); \
g_GLTable.m_pfn_qglVertex2f( rc.right - 1, rc.top ); \
g_GLTable.m_pfn_qglVertex2f( rc.left, rc.top ); \
g_GLTable.m_pfn_qglEnd(); }
#ifndef ISOMETRIC
double D = 65536.;
double ct[3],st[3];
double Hhi, Hlo, Vhi, Vlo;
#endif
#define SUBDIVS 6
void ShowPreview(){
if ( Preview ) {
if ( g_pWndPreview == NULL ) {
CreateViewWindow();
}
gtk_widget_show( g_pWndPreview );
UpdatePreview( true );
}
else{
gtk_widget_hide( g_pWndPreview );
}
}
static void draw_preview(){
int width = g_pPreviewWidget->allocation.width, height = g_pPreviewWidget->allocation.height;
g_GLTable.m_pfn_qglClearColor( 0, 0, 0, 1 );
g_GLTable.m_pfn_qglViewport( 0, 0, width, height );
g_GLTable.m_pfn_qglMatrixMode( GL_PROJECTION );
g_GLTable.m_pfn_qglLoadIdentity();
g_GLTable.m_pfn_qglOrtho( 0, width, 0, height, -1, 1 );
g_GLTable.m_pfn_qglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
// ^Fishman - Antializing for the preview window.
if ( Antialiasing ) {
g_GLTable.m_pfn_qglEnable( GL_BLEND );
g_GLTable.m_pfn_qglBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
g_GLTable.m_pfn_qglEnable( GL_LINE_SMOOTH );
}
else
{
g_GLTable.m_pfn_qglDisable( GL_BLEND );
g_GLTable.m_pfn_qglDisable( GL_LINE_SMOOTH );
}
texfont_init();
if ( !ValidSurface() ) {
return;
}
rcUpper.left = 0;
rcUpper.right = width;
rcUpper.bottom = 0;
rcUpper.top = height;
rcLower.left = 0;
rcLower.right = width;
rcLower.bottom = 0;
rcLower.top = height;
if ( VertexMode ) {
rcUpper.bottom = rcUpper.top / 2;
DrawPreview( rcUpper );
g_GLTable.m_pfn_qglBegin( GL_LINES );
g_GLTable.m_pfn_qglVertex2f( rcUpper.left, rcUpper.bottom );
g_GLTable.m_pfn_qglVertex2f( rcUpper.right, rcUpper.bottom );
g_GLTable.m_pfn_qglEnd();
rcLower.top = rcUpper.bottom - 1;
DrawGrid( rcLower );
rcCoord.left = rcLower.left;
rcCoord.right = rcLower.right;
rcCoord.bottom = rcLower.bottom;
rcCoord.top = rcLower.top;
rcCoord.top = rcCoord.bottom + cyChar;
rcCoord.right = rcCoord.left + 15 * cxChar;
rcGrid.left = X0G - 3;
rcGrid.bottom = Y0G - 3;
rcGrid.right = X0G + (int)( SFG * ( Hur - Hll ) ) + 3;
rcGrid.top = Y0G + (int)( SFG * ( Vur - Vll ) ) + 3;
}
else{
DrawPreview( rcUpper );
}
}
static gint expose( GtkWidget *widget, GdkEventExpose *event, gpointer data ){
if ( event->count > 0 ) {
return TRUE;
}
if ( !g_UIGtkTable.m_pfn_glwidget_make_current( g_pPreviewWidget ) ) {
g_FuncTable.m_pfnSysPrintf( "GtkGenSurf: glMakeCurrent failed\n" );
return TRUE;
}
draw_preview();
g_UIGtkTable.m_pfn_glwidget_swap_buffers( g_pPreviewWidget );
g_GLTable.m_pfn_QE_CheckOpenGLForErrors();
return TRUE;
}
static void button_press( GtkWidget *widget, GdkEventButton *event, gpointer data ){
POINT pt = { (long)event->x, widget->allocation.height - (long)event->y };
bool Selected;
double x,y;
int i, j, k, ks;
int i0, i1, j0, j1;
if ( ( !VertexMode ) || ( event->button != 1 ) ) {
return;
}
if ( !PtInRect( &rcGrid,pt ) ) {
gdk_beep();
return;
}
x = Hll + ( pt.x - X0G ) / SFG;
y = Vur - ( pt.y - Y0G ) / SFG;
i = (int)( floor( ( x - Hll ) / dh - 0.5 ) + 1 );
j = (int)( floor( ( y - Vll ) / dv - 0.5 ) + 1 );
if ( i < 0 || i > NH || j < 0 || j > NV ) {
gdk_beep();
return;
}
if ( !CanEdit( i,j ) ) {
gdk_beep();
return;
}
// Control key pressed - add this point, or remove it if already selected
if ( ( event->state & GDK_CONTROL_MASK ) != 0 ) {
Selected = FALSE;
if ( NumVerticesSelected ) {
for ( k = 0; k < NumVerticesSelected && !Selected; k++ )
{
if ( Vertex[k].i == i && Vertex[k].j == j ) {
Selected = TRUE;
ks = k;
}
}
}
// Already selected - unselect it.
if ( Selected ) {
if ( ks < NumVerticesSelected ) {
for ( k = ks; k < NumVerticesSelected - 1; k++ )
{
Vertex[k].i = Vertex[k + 1].i;
Vertex[k].j = Vertex[k + 1].j;
}
NumVerticesSelected--;
}
}
else
{
Vertex[NumVerticesSelected].i = i;
Vertex[NumVerticesSelected].j = j;
NumVerticesSelected++;
}
}
else if ( ( event->state & GDK_SHIFT_MASK ) != 0 ) {
if ( NumVerticesSelected ) {
NumVerticesSelected = 1;
i0 = min( Vertex[0].i, i );
i1 = max( Vertex[0].i, i );
j0 = min( Vertex[0].j, j );
j1 = max( Vertex[0].j, j );
for ( i = i0; i <= i1; i++ )
{
for ( j = j0; j <= j1; j++ )
{
if ( i == 0 && j == 0 ) {
continue;
}
if ( i == NH && j == 0 ) {
continue;
}
if ( i == 0 && j == NV ) {
continue;
}
if ( i == NH && j == NV ) {
continue;
}
if ( i != Vertex[0].i || j != Vertex[0].j ) {
Vertex[NumVerticesSelected].i = i;
Vertex[NumVerticesSelected].j = j;
NumVerticesSelected++;
}
}
}
}
else
{
Vertex[0].i = i;
Vertex[0].j = j;
NumVerticesSelected = 1;
}
}
else
{
Vertex[0].i = i;
Vertex[0].j = j;
NumVerticesSelected = 1;
}
vertex_selected();
}
static void motion( GtkWidget *widget, GdkEventMotion *event, gpointer data ){
POINT pt = { (long)event->x, widget->allocation.height - (long)event->y };
if ( !VertexMode ) {
return;
}
if ( !g_UIGtkTable.m_pfn_glwidget_make_current( g_pPreviewWidget ) ) {
g_FuncTable.m_pfnSysPrintf( "GtkGenSurf: glMakeCurrent failed\n" );
return;
}
g_GLTable.m_pfn_qglEnable( GL_SCISSOR_TEST );
g_GLTable.m_pfn_qglScissor( rcCoord.left, rcCoord.bottom, rcCoord.right - rcCoord.left,
rcCoord.top - rcCoord.bottom );
g_GLTable.m_pfn_qglClear( GL_COLOR_BUFFER_BIT );
if ( PtInRect( &rcGrid,pt ) ) {
GdkCursor *cursor = gdk_cursor_new( GDK_CROSS );
gdk_window_set_cursor( g_pWndPreview->window, cursor );
gdk_cursor_unref( cursor );
char Text[32];
int x, y;
x = (int)( Hll + ( pt.x - X0G ) / SFG );
y = (int)( Vur - ( pt.y - Y0G ) / SFG );
switch ( Plane )
{
case PLANE_XZ0:
case PLANE_XZ1:
sprintf( Text," x=%d, z=%d ",(int)( floor( x - 0.5 ) + 1. ),(int)( floor( y - 0.5 ) + 1. ) );
break;
case PLANE_YZ0:
case PLANE_YZ1:
sprintf( Text," y=%d, z=%d ",(int)( floor( x - 0.5 ) + 1. ),(int)( floor( y - 0.5 ) + 1. ) );
break;
default:
sprintf( Text," x=%d, y=%d ",(int)( floor( x - 0.5 ) + 1. ),(int)( floor( y - 0.5 ) + 1. ) );
}
texfont_write( Text, rcCoord.left, rcCoord.top );
}
else
{
gdk_window_set_cursor( g_pWndPreview->window, NULL );
}
g_UIGtkTable.m_pfn_glwidget_swap_buffers( g_pPreviewWidget );
g_GLTable.m_pfn_QE_CheckOpenGLForErrors();
g_GLTable.m_pfn_qglDisable( GL_SCISSOR_TEST );
}
static gint preview_close( GtkWidget *widget, gpointer data ){
gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON( g_object_get_data( G_OBJECT( g_pWnd ), "main_preview" ) ), FALSE );
return TRUE;
}
static void preview_focusout( GtkSpinButton *spin, GdkEventFocus *event, double *data ){
*data = DegreesToRadians( (double)( gtk_spin_button_get_value_as_int( spin ) % 360 ) );
UpdatePreview( false );
}
static gint doublevariable_spinfocusout( GtkWidget* widget, GdkEventFocus* event, gpointer data ){
preview_focusout( GTK_SPIN_BUTTON( widget ), event, reinterpret_cast<double*>( data ) );
return FALSE;
}
static void preview_spin( GtkAdjustment *adj, double *data ){
*data = DegreesToRadians( adj->value );
UpdatePreview( false );
}
void CreateViewWindow(){
GtkWidget *dlg, *vbox, *hbox, *label, *spin, *frame;
GtkObject *adj;
#ifndef ISOMETRIC
elevation = PI / 6.;
azimuth = PI / 6.;
#endif
g_pWndPreview = dlg = gtk_window_new( GTK_WINDOW_TOPLEVEL );
gtk_window_set_title( GTK_WINDOW( dlg ), "GtkGenSurf Preview" );
gtk_signal_connect( GTK_OBJECT( dlg ), "delete_event", GTK_SIGNAL_FUNC( preview_close ), NULL );
gtk_signal_connect( GTK_OBJECT( dlg ), "destroy", GTK_SIGNAL_FUNC( gtk_widget_destroy ), NULL );
gtk_window_set_transient_for( GTK_WINDOW( dlg ), GTK_WINDOW( g_pWnd ) );
gtk_window_set_default_size( GTK_WINDOW( dlg ), 300, 400 );
vbox = gtk_vbox_new( FALSE, 5 );
gtk_widget_show( vbox );
gtk_container_add( GTK_CONTAINER( dlg ), vbox );
#ifndef ISOMETRIC
hbox = gtk_hbox_new( TRUE, 5 );
gtk_widget_show( hbox );
gtk_box_pack_start( GTK_BOX( vbox ), hbox, FALSE, TRUE, 0 );
gtk_container_set_border_width( GTK_CONTAINER( hbox ), 3 );
label = gtk_label_new( "Elevation" );
gtk_widget_show( label );
gtk_misc_set_alignment( GTK_MISC( label ), 1, 0.5 );
gtk_box_pack_start( GTK_BOX( hbox ), label, FALSE, TRUE, 0 );
adj = gtk_adjustment_new( 30, -90, 90, 1, 10, 10 );
gtk_signal_connect( adj, "value_changed", GTK_SIGNAL_FUNC( preview_spin ), &elevation );
spin = gtk_spin_button_new( GTK_ADJUSTMENT( adj ), 1, 0 );
gtk_widget_show( spin );
gtk_box_pack_start( GTK_BOX( hbox ), spin, FALSE, TRUE, 0 );
g_signal_connect( G_OBJECT( spin ), "focus_out_event", G_CALLBACK( doublevariable_spinfocusout ), &elevation );
adj = gtk_adjustment_new( 30, 0, 359, 1, 10, 10 );
gtk_signal_connect( adj, "value_changed", GTK_SIGNAL_FUNC( preview_spin ), &azimuth );
spin = gtk_spin_button_new( GTK_ADJUSTMENT( adj ), 1, 0 );
gtk_widget_show( spin );
gtk_spin_button_set_wrap( GTK_SPIN_BUTTON( spin ), TRUE );
gtk_box_pack_end( GTK_BOX( hbox ), spin, FALSE, TRUE, 0 );
label = gtk_label_new( "Azimuth" );
gtk_widget_show( label );
gtk_misc_set_alignment( GTK_MISC( label ), 1, 0.5 );
gtk_box_pack_end( GTK_BOX( hbox ), label, FALSE, TRUE, 0 );
g_signal_connect( G_OBJECT( spin ), "focus_out_event", G_CALLBACK( doublevariable_spinfocusout ), &azimuth );
#endif
frame = gtk_frame_new( NULL );
gtk_widget_show( frame );
gtk_frame_set_shadow_type( GTK_FRAME( frame ), GTK_SHADOW_IN );
gtk_box_pack_start( GTK_BOX( vbox ), frame, TRUE, TRUE, 0 );
g_pPreviewWidget = g_UIGtkTable.m_pfn_glwidget_new( FALSE, NULL );
gtk_widget_set_events( g_pPreviewWidget, GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK );
gtk_signal_connect( GTK_OBJECT( g_pPreviewWidget ), "expose_event", GTK_SIGNAL_FUNC( expose ), NULL );
gtk_signal_connect( GTK_OBJECT( g_pPreviewWidget ), "motion_notify_event", GTK_SIGNAL_FUNC( motion ), NULL );
gtk_signal_connect( GTK_OBJECT( g_pPreviewWidget ), "button_press_event",
GTK_SIGNAL_FUNC( button_press ), NULL );
gtk_widget_show( g_pPreviewWidget );
gtk_container_add( GTK_CONTAINER( frame ), g_pPreviewWidget );
if ( Preview ) {
gtk_widget_show( g_pWndPreview );
}
UpdatePreview( true );
}
//=============================================================
/* DrawPreview */
void DrawPreview( RECT rc ){
#define COSXA 0.8660254037844
#define SINXA 0.5
#define COSYA 0.8660254037844
#define SINYA 0.5
double L;
double x,y;
int i, j;
POINT pt[8];
XYZ v[8];
char axis[3][2] = {"X","Y","Z"};
#ifndef ISOMETRIC
evaluate();
#endif
XLo = xmin;
XHi = xmax;
YLo = ymin;
YHi = ymax;
ZLo = zmin;
ZHi = zmax;
switch ( Plane )
{
case PLANE_XY1:
ZHi = backface;
break;
case PLANE_XZ0:
YLo = backface;
break;
case PLANE_XZ1:
YHi = backface;
break;
case PLANE_YZ0:
XLo = backface;
break;
case PLANE_YZ1:
XHi = backface;
break;
default:
ZLo = backface;
}
GetScaleFactor( rc );
//PEN_GRID
g_GLTable.m_pfn_qglLineWidth( 1 );
g_GLTable.m_pfn_qglColor3f( 0, 1, 0 );
g_GLTable.m_pfn_qglDisable( GL_LINE_STIPPLE );
if ( Decimate > 0 && ( Game != QUAKE3 || UsePatches == 0 ) ) {
XYZ *vv;
vv = (XYZ *) malloc( gNumNodes * sizeof( XYZ ) );
for ( i = 0; i < gNumNodes; i++ )
{
for ( j = 0; j < 3; j++ )
vv[i].p[j] = (double)( gNode[i].p[j] );
project( &vv[i] );
}
for ( i = 0; i < gNumTris; i++ )
{
for ( j = 0; j < 3; j++ )
Scale( rc,vv[gTri[i].v[j]],&pt[j] );
g_GLTable.m_pfn_qglBegin( GL_LINE_STRIP );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
g_GLTable.m_pfn_qglVertex2f( pt[1].x, pt[1].y );
g_GLTable.m_pfn_qglVertex2f( pt[2].x, pt[2].y );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
g_GLTable.m_pfn_qglEnd();
}
free( vv );
}
else if ( Game == QUAKE3 && UsePatches != 0 ) {
int axis, ii, jj, k;
float u, v;
XYZ uv[3][3];
XYZ Ctrl[3],out;
switch ( Plane )
{
case PLANE_XY0:
case PLANE_XY1:
k = 2;
break;
case PLANE_XZ0:
case PLANE_XZ1:
k = 1;
break;
default:
k = 0;
}
for ( i = 0; i < NH; i += 2 )
{
for ( j = 0; j < NV; j += 2 )
{
VectorCopy( xyz[i ][j ].p,uv[0][0].p );
VectorCopy( xyz[i + 1][j ].p,uv[1][0].p );
VectorCopy( xyz[i + 2][j ].p,uv[2][0].p );
VectorCopy( xyz[i ][j + 1].p,uv[0][1].p );
VectorCopy( xyz[i + 1][j + 1].p,uv[1][1].p );
VectorCopy( xyz[i + 2][j + 1].p,uv[2][1].p );
VectorCopy( xyz[i ][j + 2].p,uv[0][2].p );
VectorCopy( xyz[i + 1][j + 2].p,uv[1][2].p );
VectorCopy( xyz[i + 2][j + 2].p,uv[2][2].p );
uv[1][0].p[k] = ( 4 * xyz[i + 1][j ].p[k] - xyz[i ][j ].p[k] - xyz[i + 2][j ].p[k] ) / 2;
uv[0][1].p[k] = ( 4 * xyz[i ][j + 1].p[k] - xyz[i ][j ].p[k] - xyz[i ][j + 2].p[k] ) / 2;
uv[2][1].p[k] = ( 4 * xyz[i + 2][j + 1].p[k] - xyz[i + 2][j ].p[k] - xyz[i + 2][j + 2].p[k] ) / 2;
uv[1][2].p[k] = ( 4 * xyz[i + 1][j + 2].p[k] - xyz[i ][j + 2].p[k] - xyz[i + 2][j + 2].p[k] ) / 2;
uv[1][1].p[k] = ( 16 * xyz[i + 1][j + 1].p[k] -
xyz[i ][j ].p[k] - 2 * xyz[i + 1][j ].p[k] - xyz[i + 2][j ].p[k] -
2 * xyz[i ][j + 1].p[k] - 2 * xyz[i + 2][j + 1].p[k] -
xyz[i ][j + 2].p[k] - 2 * xyz[i + 1][j + 2].p[k] - xyz[i + 2][j + 2].p[k] ) / 4;
for ( ii = 0; ii <= SUBDIVS; ii++ )
{
if ( ii == 0 || ii == SUBDIVS / 2 || ii == SUBDIVS ) {
g_GLTable.m_pfn_qglLineWidth( 1 );
g_GLTable.m_pfn_qglColor3f( 0, 1, 0 );
g_GLTable.m_pfn_qglDisable( GL_LINE_STIPPLE );
// PEN_GRID
}
else
{
g_GLTable.m_pfn_qglLineWidth( 1 );
g_GLTable.m_pfn_qglColor3f( 0, 1, 0 );
g_GLTable.m_pfn_qglLineStipple( 1, 0xF0F0 );
g_GLTable.m_pfn_qglEnable( GL_LINE_STIPPLE );
// PEN_DASH
}
u = (float)( ii ) / (float)( SUBDIVS );
for ( jj = 0; jj < 3; jj++ )
{
for ( axis = 0; axis < 3; axis++ )
{
float a, b, c;
float qA, qB, qC;
a = (float)uv[0][jj].p[axis];
b = (float)uv[1][jj].p[axis];
c = (float)uv[2][jj].p[axis];
qA = a - 2 * b + c;
qB = 2 * b - 2 * a;
qC = a;
Ctrl[jj].p[axis] = qA * u * u + qB * u + qC;
}
}
VectorCopy( Ctrl[0].p,out.p );
project( &out );
Scale( rc,out,&pt[0] );
g_GLTable.m_pfn_qglBegin( GL_LINE_STRIP );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
for ( jj = 1; jj <= SUBDIVS; jj++ )
{
v = (float)( jj ) / (float)( SUBDIVS );
for ( axis = 0 ; axis < 3 ; axis++ )
{
float a, b, c;
float qA, qB, qC;
a = (float)Ctrl[0].p[axis];
b = (float)Ctrl[1].p[axis];
c = (float)Ctrl[2].p[axis];
qA = a - 2 * b + c;
qB = 2 * b - 2 * a;
qC = a;
out.p[axis] = qA * v * v + qB * v + qC;
}
project( &out );
Scale( rc,out,&pt[0] );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
}
g_GLTable.m_pfn_qglEnd();
}
for ( jj = 0; jj <= SUBDIVS; jj++ )
{
if ( jj == 0 || jj == SUBDIVS / 2 || jj == SUBDIVS ) {
g_GLTable.m_pfn_qglLineWidth( 1 );
g_GLTable.m_pfn_qglColor3f( 0, 1, 0 );
g_GLTable.m_pfn_qglDisable( GL_LINE_STIPPLE );
// PEN_GRID
}
else
{
g_GLTable.m_pfn_qglLineWidth( 1 );
g_GLTable.m_pfn_qglColor3f( 0, 1, 0 );
g_GLTable.m_pfn_qglLineStipple( 1, 0xF0F0 );
g_GLTable.m_pfn_qglEnable( GL_LINE_STIPPLE );
// PEN_DASH
}
v = (float)( jj ) / (float)( SUBDIVS );
for ( ii = 0; ii < 3; ii++ )
{
for ( axis = 0; axis < 3; axis++ )
{
float a, b, c;
float qA, qB, qC;
a = (float)uv[ii][0].p[axis];
b = (float)uv[ii][1].p[axis];
c = (float)uv[ii][2].p[axis];
qA = a - 2 * b + c;
qB = 2 * b - 2 * a;
qC = a;
Ctrl[ii].p[axis] = qA * v * v + qB * v + qC;
}
}
VectorCopy( Ctrl[0].p,out.p );
project( &out );
Scale( rc,out,&pt[0] );
g_GLTable.m_pfn_qglBegin( GL_LINE_STRIP );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
for ( ii = 1; ii <= SUBDIVS; ii++ )
{
u = (float)( ii ) / (float)( SUBDIVS );
for ( axis = 0 ; axis < 3 ; axis++ )
{
float a, b, c;
float qA, qB, qC;
a = (float)Ctrl[0].p[axis];
b = (float)Ctrl[1].p[axis];
c = (float)Ctrl[2].p[axis];
qA = a - 2 * b + c;
qB = 2 * b - 2 * a;
qC = a;
out.p[axis] = qA * u * u + qB * u + qC;
}
project( &out );
Scale( rc,out,&pt[0] );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
}
g_GLTable.m_pfn_qglEnd();
}
}
}
}
else
{
for ( i = 0; i <= NH; i++ )
{
Scale( rc,xyz[i][0],&pt[0] );
g_GLTable.m_pfn_qglBegin( GL_LINE_STRIP );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
for ( j = 1; j <= NV; j++ )
{
Scale( rc,xyz[i][j],&pt[0] );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
}
g_GLTable.m_pfn_qglEnd();
}
for ( j = 0; j <= NV; j++ )
{
Scale( rc,xyz[0][j],&pt[0] );
g_GLTable.m_pfn_qglBegin( GL_LINE_STRIP );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
for ( i = 1; i <= NH; i++ )
{
Scale( rc,xyz[i][j],&pt[0] );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
}
g_GLTable.m_pfn_qglEnd();
}
}
if ( Game != QUAKE3 || UsePatches == 0 ) {
// Draw lines from corners to base, and lines around base
for ( i = 0; i <= NH; i += NH )
{
for ( j = 0; j <= NV; j += NV )
{
VectorCopy( xyz[i][j].p, v[0].p );
switch ( Plane )
{
case PLANE_XZ0:
case PLANE_XZ1:
v[0].p[1] = backface;
break;
case PLANE_YZ0:
case PLANE_YZ1:
v[0].p[0] = backface;
break;
default:
v[0].p[2] = backface;
}
Scale( rc,xyz[i][j],&pt[0] );
#ifndef ISOMETRIC
project( &v[0] );
#endif
Scale( rc,v[0],&pt[1] );
g_GLTable.m_pfn_qglBegin( GL_LINE_STRIP );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
g_GLTable.m_pfn_qglVertex2f( pt[1].x, pt[1].y );
g_GLTable.m_pfn_qglEnd();
}
}
VectorCopy( xyz[ 0][ 0].p, v[0].p );
VectorCopy( xyz[NH][ 0].p, v[1].p );
VectorCopy( xyz[NH][NV].p, v[2].p );
VectorCopy( xyz[ 0][NV].p, v[3].p );
switch ( Plane )
{
case PLANE_XZ0:
case PLANE_XZ1:
v[0].p[1] = backface;;
v[1].p[1] = v[0].p[1];
v[2].p[1] = v[0].p[1];
v[3].p[1] = v[0].p[1];
break;
case PLANE_YZ0:
case PLANE_YZ1:
v[0].p[0] = backface;
v[1].p[0] = v[0].p[0];
v[2].p[0] = v[0].p[0];
v[3].p[0] = v[0].p[0];
break;
default:
v[0].p[2] = backface;
v[1].p[2] = v[0].p[2];
v[2].p[2] = v[0].p[2];
v[3].p[2] = v[0].p[2];
}
#ifndef ISOMETRIC
project( &v[3] );
#endif
Scale( rc,v[3],&pt[0] );
g_GLTable.m_pfn_qglBegin( GL_LINE_STRIP );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
for ( i = 0; i < 3; i++ )
{
#ifndef ISOMETRIC
project( &v[i] );
#endif
Scale( rc,v[i],&pt[1] );
g_GLTable.m_pfn_qglVertex2f( pt[1].x, pt[1].y );
}
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
g_GLTable.m_pfn_qglEnd();
}
g_GLTable.m_pfn_qglLineWidth( 1 );
g_GLTable.m_pfn_qglColor3f( 0, 1, 0 );
g_GLTable.m_pfn_qglDisable( GL_LINE_STIPPLE );
#ifdef ISOMETRIC
// Draw small depiction of coordinate axes
pt[0].x = rc.right - cxChar - cxChar / 2 - cyChar;
pt[0].y = rc.bottom - cyChar / 2 - cxChar / 2;
pt[1].x = pt[0].x + (int)( cyChar * COSXA );
pt[1].y = pt[0].y - (int)( cyChar * SINXA );
MoveToEx( hdc,pt[0].x,pt[0].y,NULL );
LineTo( hdc,pt[1].x,pt[1].y );
SetTextAlign( hdc,TA_LEFT | TA_TOP );
TextOut( hdc,pt[1].x,pt[1].y - cyChar / 2,"X",1 );
pt[1].x = pt[0].x - (int)( cyChar * COSYA );
pt[1].y = pt[0].y - (int)( cyChar * SINYA );
MoveToEx( hdc,pt[0].x,pt[0].y,NULL );
LineTo( hdc,pt[1].x,pt[1].y );
SetTextAlign( hdc,TA_RIGHT | TA_TOP );
TextOut( hdc,pt[1].x,pt[1].y - cyChar / 2,"Y",1 );
pt[1].x = pt[0].x;
pt[1].y = pt[0].y - cyChar;
MoveToEx( hdc,pt[0].x,pt[0].y,NULL );
LineTo( hdc,pt[1].x,pt[1].y );
SetTextAlign( hdc,TA_CENTER | TA_BOTTOM );
TextOut( hdc,pt[1].x,pt[1].y,"Z",1 );
#else
L = 2 * (double)cyChar / SF;
v[0].p[0] = 0.;
v[0].p[1] = 0.;
v[0].p[2] = 0.;
v[1].p[0] = L;
v[1].p[1] = 0.;
v[1].p[2] = 0.;
v[2].p[0] = 0.;
v[2].p[1] = L;
v[2].p[2] = 0.;
v[3].p[0] = 0.;
v[3].p[1] = 0.;
v[3].p[2] = L;
for ( i = 0; i <= 3; i++ )
{
project( &v[i] );
Scale( rc,v[i],&pt[i] );
}
for ( i = 1; i <= 3; i++ )
{
pt[i].x += -pt[0].x + rc.right - 2 * cyChar;
pt[i].y += -pt[0].y + rc.bottom + 2 * cyChar;
}
pt[0].x = rc.right - 2 * cyChar;
pt[0].y = rc.bottom + 2 * cyChar;
for ( i = 1; i <= 3; i++ )
{
g_GLTable.m_pfn_qglBegin( GL_LINES );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
g_GLTable.m_pfn_qglVertex2f( pt[i].x, pt[i].y );
g_GLTable.m_pfn_qglEnd();
texfont_write( axis[i - 1], pt[i].x - cxChar / 2,pt[i].y + cyChar / 2 );
}
#endif
// Draw player model's bounding box in red to give a sense of scale
// PEN_RED
g_GLTable.m_pfn_qglLineWidth( 2 );
g_GLTable.m_pfn_qglColor3f( 1, 0, 0 );
g_GLTable.m_pfn_qglDisable( GL_LINE_STIPPLE );
switch ( Plane )
{
case PLANE_XY1:
v[0].p[0] = xyz[NH / 2][NV / 2].p[0] + PlayerBox[Game].x[0];
v[0].p[1] = xyz[NH / 2][NV / 2].p[1] + PlayerBox[Game].y[0];
v[0].p[2] = zmin - PlayerBox[Game].z[0] - 32;
break;
case PLANE_XZ0:
v[0].p[0] = ( xmax + xmin ) / 2 + PlayerBox[Game].x[0];
v[0].p[1] = ymax + 64;
v[0].p[2] = zmin;
break;
case PLANE_XZ1:
v[0].p[0] = ( xmax + xmin ) / 2 + PlayerBox[Game].x[0];
v[0].p[1] = ymin - 64;
v[0].p[2] = zmin;
break;
case PLANE_YZ0:
v[0].p[0] = xmax + 64;
v[0].p[1] = ( ymax + ymin ) / 2 + PlayerBox[Game].y[0];
v[0].p[2] = zmin;
break;
case PLANE_YZ1:
v[0].p[0] = xmin - 64;
v[0].p[1] = ( ymax + ymin ) / 2 + PlayerBox[Game].y[0];
v[0].p[2] = zmin;
break;
default:
// Put player on a node. For patches, put on an even numbered node.
if ( Game == QUAKE3 && UsePatches != 0 ) {
if ( NH > 2 ) {
x = Hll + dh * (int)( NH / 2 + 1 );
}
else{
x = Hll + dh * (int)( NH / 2 );
}
if ( NV > 2 ) {
y = Vll + dv * (int)( NV / 2 + 1 );
}
else{
y = Vll + dv * (int)( NV / 2 );
}
}
else
{
if ( NH > 1 ) {
x = Hll + dh * (int)( NH / 2 );
}
else{
x = Hll + dh / 2;
}
if ( NV > 1 ) {
y = Vll + dv * (int)( NV / 2 );
}
else{
y = Vll + dv / 2;
}
}
// x = (Hll+Hur)/2.;
// y = (Vll+Vur)/2.;
v[0].p[0] = x + PlayerBox[Game].x[0];
v[0].p[1] = y + PlayerBox[Game].y[0];
v[0].p[2] = PlayerStartZ( x,y ) + PlayerBox[Game].z[0] + 8; // add 8 cuz I'm a pessimist
}
v[1].p[0] = v[0].p[0] + PlayerBox[Game].x[1] - PlayerBox[Game].x[0];
v[1].p[1] = v[0].p[1];
v[1].p[2] = v[0].p[2];
v[2].p[0] = v[1].p[0];
v[2].p[1] = v[1].p[1] + PlayerBox[Game].y[1] - PlayerBox[Game].y[0];
v[2].p[2] = v[0].p[2];
v[3].p[0] = v[0].p[0];
v[3].p[1] = v[2].p[1];
v[3].p[2] = v[0].p[2];
VectorCopy( v[0].p,v[4].p );
VectorCopy( v[1].p,v[5].p );
VectorCopy( v[2].p,v[6].p );
VectorCopy( v[3].p,v[7].p );
v[4].p[2] += PlayerBox[Game].z[1] - PlayerBox[Game].z[0];
v[5].p[2] += PlayerBox[Game].z[1] - PlayerBox[Game].z[0];
v[6].p[2] += PlayerBox[Game].z[1] - PlayerBox[Game].z[0];
v[7].p[2] += PlayerBox[Game].z[1] - PlayerBox[Game].z[0];
for ( i = 0; i <= 7; i++ )
{
#ifndef ISOMETRIC
project( &v[i] );
#endif
Scale( rc,v[i],&pt[i] );
}
g_GLTable.m_pfn_qglBegin( GL_LINE_STRIP );
g_GLTable.m_pfn_qglVertex2f( pt[3].x, pt[3].y );
for ( i = 0; i <= 3; i++ )
g_GLTable.m_pfn_qglVertex2f( pt[i].x, pt[i].y );
g_GLTable.m_pfn_qglEnd();
g_GLTable.m_pfn_qglBegin( GL_LINE_STRIP );
g_GLTable.m_pfn_qglVertex2f( pt[7].x, pt[7].y );
for ( i = 4; i <= 7; i++ )
g_GLTable.m_pfn_qglVertex2f( pt[i].x, pt[i].y );
g_GLTable.m_pfn_qglEnd();
g_GLTable.m_pfn_qglBegin( GL_LINES );
for ( i = 0; i <= 3; i++ )
{
g_GLTable.m_pfn_qglVertex2f( pt[i].x,pt[i].y );
g_GLTable.m_pfn_qglVertex2f( pt[i + 4].x,pt[i + 4].y );
}
g_GLTable.m_pfn_qglEnd();
g_GLTable.m_pfn_qglLineWidth( 1 );
g_GLTable.m_pfn_qglColor3f( 0, 1, 0 );
g_GLTable.m_pfn_qglDisable( GL_LINE_STIPPLE );
}
//=============================================================
void DrawGrid( RECT rc ){
int i, j, k;
double h,w,x,y;
POINT pt[2];
RECT rcBox;
w = (double)( rc.right - rc.left + 1 ) - cxChar;
h = (double)( rc.top - rc.bottom + 1 ) - cxChar - cyChar;
SFG = w / ( Hur - Hll );
SFG = min( SFG, h / ( Vur - Vll ) );
// Center drawing
X0G = (int)( rc.left + rc.right - (int)( SFG * ( Hur - Hll ) ) ) / 2;
Y0G = (int)( rc.top + rc.bottom + cyChar - (int)( SFG * ( Vur - Vll ) ) ) / 2;
g_GLTable.m_pfn_qglLineWidth( 2 );
g_GLTable.m_pfn_qglColor3f( 0, 1, 0 );
g_GLTable.m_pfn_qglDisable( GL_LINE_STIPPLE );
pt[0].y = Y0G;
pt[1].y = Y0G + (int)( SFG * ( Vur - Vll ) );
g_GLTable.m_pfn_qglBegin( GL_LINES );
for ( i = 0; i <= NH; i++ )
{
x = Hll + i * dh;
pt[0].x = X0G + (int)( SFG * ( x - Hll ) );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[0].y );
g_GLTable.m_pfn_qglVertex2f( pt[0].x, pt[1].y );
}
g_GLTable.m_pfn_qglEnd();
pt[0].x = X0G;
pt[1].x = X0G + (int)( SFG * ( Hur - Hll ) );
g_GLTable.m_pfn_qglBegin( GL_LINES );
for ( i = 0; i <= NV; i++ )
{
y = Vll + i * dv;
pt[0].y = Y0G + (int)( SFG * ( Vur - y ) );
g_GLTable.m_pfn_qglVertex2f( pt[0].x,pt[0].y );
g_GLTable.m_pfn_qglVertex2f( pt[1].x,pt[0].y );
}
g_GLTable.m_pfn_qglEnd();
g_GLTable.m_pfn_qglLineWidth( 1 );
// Draw axes
pt[0].x = rc.right - cyChar - cxChar - cyChar / 2;
pt[0].y = rc.bottom + cyChar / 2;
pt[1].x = pt[0].x + cyChar;
pt[1].y = pt[0].y;
g_GLTable.m_pfn_qglBegin( GL_LINES );
g_GLTable.m_pfn_qglVertex2f( pt[0].x,pt[0].y );
g_GLTable.m_pfn_qglVertex2f( pt[1].x,pt[1].y );
g_GLTable.m_pfn_qglEnd();
switch ( Plane )
{
case PLANE_YZ0:
case PLANE_YZ1:
texfont_write( "Y", pt[1].x, pt[1].y + cyChar / 2 );
break;
default:
texfont_write( "X", pt[1].x, pt[1].y + cyChar / 2 );
}
pt[1].x = pt[0].x;
pt[1].y = pt[0].y + cyChar;
g_GLTable.m_pfn_qglBegin( GL_LINES );
g_GLTable.m_pfn_qglVertex2f( pt[0].x,pt[0].y );
g_GLTable.m_pfn_qglVertex2f( pt[1].x,pt[1].y );
g_GLTable.m_pfn_qglEnd();
switch ( Plane )
{
case PLANE_XY0:
case PLANE_XY1:
texfont_write( "Y", pt[1].x - cyChar / 2, pt[1].y + cyChar );
break;
default:
texfont_write( "Z", pt[1].x - cyChar / 2, pt[1].y + cyChar );
}
// Denote fixed points with a 5x5 red rectangle
for ( i = 0; i <= NH; i++ )
{
for ( j = 0; j <= NV; j++ )
{
if ( xyz[i][j].fixed ) {
x = Hll + i * dh;
y = Vll + j * dv;
rcBox.left = X0G + (int)( SFG * ( x - Hll ) ) - 2;
rcBox.top = Y0G + (int)( SFG * ( Vur - y ) ) + 2;
rcBox.right = rcBox.left + 5;
rcBox.bottom = rcBox.top - 5;
DRAW_QUAD( rcBox, 1,0,0 );
}
}
}
// Denote currently selected point with a 5x5 green rectangle
if ( NumVerticesSelected ) {
for ( k = 0; k < NumVerticesSelected; k++ )
{
x = Hll + Vertex[k].i * dh;
y = Vll + Vertex[k].j * dv;
rcBox.left = X0G + (int)( SFG * ( x - Hll ) ) - 2;
rcBox.top = Y0G + (int)( SFG * ( Vur - y ) ) + 2;
rcBox.right = rcBox.left + 5;
rcBox.bottom = rcBox.top - 5;
DRAW_QUAD( rcBox, 0,1,0 );
}
}
// Unmovable vertices
for ( i = 0; i <= NH; i++ )
{
for ( j = 0; j <= NV; j++ )
{
if ( !CanEdit( i,j ) ) {
x = Hll + i * dh;
y = Vll + j * dv;
rcBox.left = X0G + (int)( SFG * ( x - Hll ) ) - 2;
rcBox.top = Y0G + (int)( SFG * ( Vur - y ) ) + 2;
rcBox.right = rcBox.left + 5;
rcBox.bottom = rcBox.top - 5;
DRAW_QUAD( rcBox, 1,1,0 );
}
}
}
// Legend
rcBox.left = rc.left + cxChar / 2 - 2;
rcBox.top = rc.top - cyChar / 2 - 2;
rcBox.right = rcBox.left + 5;
rcBox.bottom = rcBox.top - 5;
DRAW_QUAD( rcBox, 1,0,0 );
texfont_write( "Fixed points", rcBox.right + cxChar,rcBox.top - 4 + cyChar / 2 );
rcBox.top -= cyChar;
rcBox.bottom -= cyChar;
DRAW_QUAD( rcBox, 1,1,0 );
texfont_write( "Not movable", rcBox.right + cxChar, rcBox.top - 4 + cyChar / 2 );
rcBox.top -= cyChar;
rcBox.bottom -= cyChar;
DRAW_QUAD( rcBox, 0,1,0 );
texfont_write( "Selected", rcBox.right + cxChar, rcBox.top - 4 + cyChar / 2 );
}
//=============================================================
void GetScaleFactor( RECT rc ){
#ifdef ISOMETRIC
double h, w;
w = (double)( rc.right - rc.left + 1 ) - cxChar;
h = (double)( rc.top - rc.bottom + 1 ) - cxChar;
SF = w / ( ( XHi - XLo ) * COSXA + ( YHi - YLo ) * COSYA );
SF = min( SF, h / ( ( XHi - XLo ) * SINXA + ( YHi - YLo ) * SINYA + ZHi - ZLo ) );
// Center drawing
X0 = (int)( rc.left + rc.right - (int)( SF * ( ( XHi - XLo ) * COSXA + ( YHi - YLo ) * COSYA ) ) ) / 2;
Y0 = (int)( rc.top + rc.bottom - (int)( SF * ( ( XHi - XLo ) * SINXA + ( YHi - YLo ) * SINYA + ZHi - ZLo ) ) ) / 2;
#else
double h, w;
w = (double)( rc.right - rc.left + 1 ) - cxChar;
h = (double)( rc.top - rc.bottom + 1 ) - cxChar;
SF = w / ( Hhi - Hlo );
SF = min( SF, h / ( Vhi - Vlo ) );
X0 = (int)( rc.left + rc.right - (int)( SF * ( Hhi - Hlo ) ) ) / 2;
Y0 = (int)( rc.top + rc.bottom + (int)( SF * ( Vhi - Vlo ) ) ) / 2;
#endif
}
//=============================================================
void Scale( RECT rc,XYZ xyz,POINT *pt ){
#ifdef ISOMETRIC
pt[0].x = X0 + (int)( SF * ( ( xyz.p[0] - XLo ) * COSXA +
( YHi - xyz.p[1] ) * COSYA ) );
pt[0].y = Y0 + (int)( SF * ( ZHi - xyz.p[2] +
( YHi - xyz.p[1] ) * SINYA +
( XHi - xyz.p[0] ) * SINXA ) );
#else
pt[0].x = X0 + (int)( SF * ( xyz.pp[0] - Hlo ) );
pt[0].y = Y0 - (int)( SF * ( Vhi - xyz.pp[1] ) );
#endif
}
#ifndef ISOMETRIC
/* ======================================================================= */
void project( XYZ *v ){
// project a 3D point (x,y,z) onto view plane
double x, y, z, xa, ya, za;
x = v->p[0];
y = v->p[1];
z = v->p[2];
// yaw
xa = ct[0] * x - st[0] * z;
za = st[0] * x + ct[0] * z;
// roll
x = ct[1] * xa + st[1] * y;
ya = ct[1] * y - st[1] * xa;
// azimuth
z = ct[2] * za - st[2] * ya;
y = ct[2] * ya + st[2] * za;
// horizontal and vertical projections:
// v->pp[0] = D*x/z;
// v->pp[1] = D*y/z;
v->pp[0] = -y;
v->pp[1] = x;
v->pp[2] = z;
// NOTE: if perspective transformation is desired,
// set "persp" to the range from the surface,
// then:
// v->projected_h = -v->projected_h * persp/(v->projected_z-persp);
// v->projected_v = -v->projected_v * persp/(v->projected_z-persp);
}
/*=======================================================================*/
void evaluate(){
int i, j;
XYZ v[4];
if ( elevation > PI ) {
elevation -= 2. * PI;
}
roll = elevation * sin( azimuth );
yaw = 1.5 * PI + elevation*cos( azimuth );
// Find angles from midpoint to viewpoint:
st[0] = sin( yaw );
st[1] = sin( roll );
st[2] = sin( azimuth );
ct[0] = cos( yaw );
ct[1] = cos( roll );
ct[2] = cos( azimuth );
for ( i = 0; i <= NH; i++ )
{
for ( j = 0; j <= NV; j++ )
{
project( &xyz[i][j] );
}
}
Hhi = xyz[0][0].pp[0];
Hlo = Hhi;
Vhi = xyz[0][0].pp[1];
Vlo = Vhi;
for ( i = 0; i <= NH; i++ )
{
for ( j = 0; j <= NV; j++ )
{
Hlo = min( Hlo,xyz[i][j].pp[0] );
Hhi = max( Hhi,xyz[i][j].pp[0] );
Vlo = min( Vlo,xyz[i][j].pp[1] );
Vhi = max( Vhi,xyz[i][j].pp[1] );
}
}
// Include backface in min-max
VectorCopy( xyz[ 0][ 0].p,v[0].p );
VectorCopy( xyz[NH][ 0].p,v[1].p );
VectorCopy( xyz[NH][NV].p,v[2].p );
VectorCopy( xyz[ 0][NV].p,v[3].p );
switch ( Plane )
{
case PLANE_XZ0:
case PLANE_XZ1:
v[0].p[1] = backface;
v[1].p[1] = v[0].p[1];
v[2].p[1] = v[0].p[1];
v[3].p[1] = v[0].p[1];
break;
case PLANE_YZ0:
case PLANE_YZ1:
v[0].p[0] = backface;
v[1].p[0] = v[0].p[0];
v[2].p[0] = v[0].p[0];
v[3].p[0] = v[0].p[0];
break;
default:
v[0].p[2] = backface;
v[1].p[2] = v[0].p[2];
v[2].p[2] = v[0].p[2];
v[3].p[2] = v[0].p[2];
}
for ( i = 0; i <= 3; i++ )
{
project( &v[i] );
Hlo = min( Hlo,v[i].pp[0] );
Hhi = max( Hhi,v[i].pp[0] );
Vlo = min( Vlo,v[i].pp[1] );
Vhi = max( Vhi,v[i].pp[1] );
}
}
#endif
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