From 3bf9df6b2785fa6d951086978a3e66f49427166a Mon Sep 17 00:00:00 2001
From: FluorescentCIAAfricanAmerican <0934gj3049fk@protonmail.com>
Date: Wed, 22 Apr 2020 12:56:21 -0400
Subject: 1

---
 raytrace/trace3.cpp | 127 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 raytrace/trace3.cpp

(limited to 'raytrace/trace3.cpp')

diff --git a/raytrace/trace3.cpp b/raytrace/trace3.cpp
new file mode 100644
index 0000000..b582347
--- /dev/null
+++ b/raytrace/trace3.cpp
@@ -0,0 +1,127 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+
+#include "raytrace.h"
+#include <bspfile.h>
+#include "bsplib.h"
+
+static Vector VertCoord(dface_t const &f, int vnum)
+{
+	int eIndex = dsurfedges[f.firstedge+vnum];
+	int point;
+	if( eIndex < 0 )
+	{
+		point = dedges[-eIndex].v[1];
+	}
+	else
+	{
+		point = dedges[eIndex].v[0];
+	}
+	dvertex_t *v=dvertexes+point;
+	return Vector(v->point[0],v->point[1],v->point[2]);
+
+}
+
+Vector colors[]={
+	Vector(0.5,0.5,1),
+	Vector(0.5,1,0.5),
+	Vector(0.5,1,1),
+	Vector(1,0.5,0.5),
+	Vector(1,0.5,1),
+	Vector(1,1,1)};
+
+void RayTracingEnvironment::AddBSPFace(int id,dface_t const &face)
+{
+	if (face.dispinfo!=-1)									// displacements must be dealt with elsewhere
+		return;
+	texinfo_t *tx =(face.texinfo>=0)?&(texinfo[face.texinfo]):0;
+// 	if (tx && (tx->flags & (SURF_SKY|SURF_NODRAW)))
+// 		return;
+	if (tx)
+	{
+		printf("id %d flags=%x\n",id,tx->flags);
+	}
+	printf("side: ");
+	for(int v=0;v<face.numedges;v++)
+	{
+		printf("(%f %f %f) ",XYZ(VertCoord(face,v)));
+	}
+	printf("\n");
+	int ntris=face.numedges-2;
+	for(int tri=0;tri<ntris;tri++)
+	{
+		
+		AddTriangle(id,VertCoord(face,0),VertCoord(face,(tri+1)%face.numedges),
+					VertCoord(face,(tri+2)%face.numedges),Vector(1,1,1)); //colors[id % NELEMS(colors)]);
+	}
+}
+
+void RayTracingEnvironment::InitializeFromLoadedBSP(void)
+{
+// 	CUtlVector<uint8> PlanesToSkip;
+// 	SidesToSkip.EnsureCapacity(numplanes);
+// 	for(int s=0;s<numplanes;s++)
+// 		SidesToSkip.AddToTail(0);
+// 	for(int b=0;b<numbrushes;b++)
+// 		if ((dbrushes[b].contents & MASK_OPAQUE)==0)
+// 		{
+// 			// transparent brush - mark all its sides as "do not process"
+// 			for(int s=0;s<dbrushes[b].numsides;s++)
+// 			{
+// 				PlanesToSkip[s+dbrushes[b].firstside]=1;
+// 			}
+
+// 		}
+// 	// now, add all origfaces, omitting those whose sides are the ones we marked previously
+// 	for(int c=0;c<numorigfaces;c++)
+// 	{
+// 		dface_t const &f=dorigfaces[c];
+// 		if (SidesToSkip[f.AddBSPFace(c,dorigfaces[c]);
+// 	}
+	
+
+
+// 	// ugly - I want to traverse all the faces. but there is no way to get from a face back to it's
+// 	// original brush, and I need to get back to the face to the contents field of the brush.  So I
+// 	// will create a temporary mapping from a "side" to its brush. I can get from the face to it
+// 	// side, which can get me back to its brush.
+	
+// 	CUtlVector<uint8> OrigFaceVisited;
+// 	OrigFaceVisited.EnsureCapacity(numorigfaces);
+// 	int n_added=0;
+
+// 	for(int i=0;i<numorigfaces;i++)
+// 		OrigFaceVisited.AddToTail(0);
+
+// 	for(int l=0;l<numleafs;l++)
+// 	{
+// 		dleaf_t const &lf=dleafs[l];
+// //		if (lf.contents & MASK_OPAQUE)
+// 		{
+// 			for(int f=0;f<lf.numleaffaces;f++);
+// 			{
+// 				dface_t const &face=dfaces[f+lf.firstleafface];
+// 				if (OrigFaceVisited[face.origFace]==0)
+// 				{
+// 					dface_t const &oface=dorigfaces[face.origFace];
+// 					OrigFaceVisited[face.origFace]=1;
+// 					n_added++;
+// 					AddBSPFace(face.origFace,oface);
+// 				}
+// 			}
+// 		}
+// 	}
+// 	printf("added %d of %d\n",n_added,numorigfaces);
+// 	for(int c=0;c<numorigfaces;c++)
+// 	{
+// 		dface_t const &f=dorigfaces[c];
+// 		AddBSPFace(c,dorigfaces[c]);
+// 	}
+	for(int c=0;c<numfaces;c++)
+	{
+//		dface_t const &f=dfaces[c];
+		AddBSPFace(c,dorigfaces[c]);
+	}
+
+//	AddTriangle(1234,Vector(51,145,-700),Vector(71,165,-700),Vector(51,165,-700),colors[5]);
+}
+
-- 
cgit v1.2.3