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utils/vbsp/glfile.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+
+#include "vbsp.h"
+
+int		c_glfaces;
+
+int PortalVisibleSides (portal_t *p)
+{
+	int		fcon, bcon;
+
+	if (!p->onnode)
+		return 0;		// outside
+
+	fcon = p->nodes[0]->contents;
+	bcon = p->nodes[1]->contents;
+
+	// same contents never create a face
+	if (fcon == bcon)
+		return 0;
+
+	// FIXME: is this correct now?
+	if (!fcon)
+		return 1;
+	if (!bcon)
+		return 2;
+	return 0;
+}
+
+void OutputWinding (winding_t *w, FileHandle_t glview)
+{
+	static	int	level = 128;
+	vec_t		light;
+	int			i;
+
+	CmdLib_FPrintf( glview, "%i\n", w->numpoints);
+	level+=28;
+	light = (level&255)/255.0;
+	for (i=0 ; i<w->numpoints ; i++)
+	{
+		CmdLib_FPrintf(glview, "%6.3f %6.3f %6.3f %6.3f %6.3f %6.3f\n",
+			w->p[i][0],
+			w->p[i][1],
+			w->p[i][2],
+			light,
+			light,
+			light);
+	}
+	//CmdLib_FPrintf(glview, "\n");
+}
+
+void OutputWindingColor (winding_t *w, FileHandle_t glview, int r, int g, int b)
+{
+	int			i;
+
+	CmdLib_FPrintf( glview, "%i\n", w->numpoints);
+	float lr = r * (1.0f/255.0f);
+	float lg = g * (1.0f/255.0f);
+	float lb = b * (1.0f/255.0f);
+	for (i=0 ; i<w->numpoints ; i++)
+	{
+		CmdLib_FPrintf(glview, "%6.3f %6.3f %6.3f %6.3f %6.3f %6.3f\n",
+			w->p[i][0],
+			w->p[i][1],
+			w->p[i][2],
+			lr,
+			lg,
+			lb);
+	}
+	//CmdLib_FPrintf(glview, "\n");
+}
+
+/*
+=============
+OutputPortal
+=============
+*/
+void OutputPortal (portal_t *p, FileHandle_t glview)
+{
+	winding_t	*w;
+	int		sides;
+
+	sides = PortalVisibleSides (p);
+	if (!sides)
+		return;
+
+	c_glfaces++;
+
+	w = p->winding;
+
+	if (sides == 2)		// back side
+		w = ReverseWinding (w);
+
+	OutputWinding (w, glview);
+
+	if (sides == 2)
+		FreeWinding(w);
+}
+
+/*
+=============
+WriteGLView_r
+=============
+*/
+void WriteGLView_r (node_t *node, FileHandle_t glview)
+{
+	portal_t	*p, *nextp;
+
+	if (node->planenum != PLANENUM_LEAF)
+	{
+		WriteGLView_r (node->children[0], glview);
+		WriteGLView_r (node->children[1], glview);
+		return;
+	}
+
+	// write all the portals
+	for (p=node->portals ; p ; p=nextp)
+	{
+		if (p->nodes[0] == node)
+		{
+			OutputPortal (p, glview);
+			nextp = p->next[0];
+		}
+		else
+			nextp = p->next[1];
+	}
+}
+
+
+void WriteGLViewFaces_r( node_t *node, FileHandle_t glview )
+{
+	portal_t	*p, *nextp;
+
+	if (node->planenum != PLANENUM_LEAF)
+	{
+		WriteGLViewFaces_r (node->children[0], glview);
+		WriteGLViewFaces_r (node->children[1], glview);
+		return;
+	}
+
+	// write all the portals
+	for (p=node->portals ; p ; p=nextp)
+	{
+		int s = (p->nodes[1] == node);
+
+		if ( p->face[s] )
+		{
+			OutputWinding( p->face[s]->w, glview );
+		}
+		nextp = p->next[s];
+	}
+}
+
+/*
+=============
+WriteGLView
+=============
+*/
+void WriteGLView (tree_t *tree, char *source)
+{
+	char	name[1024];
+	FileHandle_t glview;
+
+	c_glfaces = 0;
+	sprintf (name, "%s%s.gl",outbase, source);
+	Msg("Writing %s\n", name);
+
+	glview = g_pFileSystem->Open( name, "w" );
+	if (!glview)
+		Error ("Couldn't open %s", name);
+	WriteGLView_r (tree->headnode, glview);
+	g_pFileSystem->Close( glview );
+
+	Msg("%5i c_glfaces\n", c_glfaces);
+}
+
+
+void WriteGLViewFaces( tree_t *tree, const char *pName )
+{
+	char	name[1024];
+	FileHandle_t glview;
+
+	c_glfaces = 0;
+	sprintf (name, "%s%s.gl", outbase, pName);
+	Msg("Writing %s\n", name);
+
+	glview = g_pFileSystem->Open( name, "w" );
+	if (!glview)
+		Error ("Couldn't open %s", name);
+	WriteGLViewFaces_r (tree->headnode, glview);
+	g_pFileSystem->Close( glview );
+
+	Msg("%5i c_glfaces\n", c_glfaces);
+}
+
+
+void WriteGLViewBrushList( bspbrush_t *pList, const char *pName )
+{
+	char	name[1024];
+	FileHandle_t glview;
+
+	sprintf (name, "%s%s.gl", outbase, pName );
+	Msg("Writing %s\n", name);
+
+	glview = g_pFileSystem->Open( name, "w" );
+	if (!glview)
+	Error ("Couldn't open %s", name);
+	for ( bspbrush_t *pBrush = pList; pBrush; pBrush = pBrush->next )
+	{
+		for (int i =  0; i < pBrush->numsides; i++ )
+			OutputWinding( pBrush->sides[i].winding, glview );
+	}
+	g_pFileSystem->Close( glview );
+}