Initial revision

1 files changed, 0 insertions, 779 deletions

diff --git a/3dc/VDB.C b/3dc/VDB.C
deleted file mode 100644
index 983497f..0000000
--- a/3dc/VDB.C
+++ /dev/null
@@ -1,779 +0,0 @@
-
-#include "3dc.h"
-#include "inline.h"
-
-
-
-/*
-
- externs for commonly used global variables and arrays
-
-*/
-
-	#if platform_pc
-	extern int sine[];
-	extern int cosine[];
-	#endif
-
-    #if SupportWindows95
-	extern int ScanDrawMode;
-	#endif
-
-
-/*
-
- General System Globals
-
-*/
-
-SCENE Global_Scene = 0;
-
-
-
-
-/*
-
- Screen Descriptor Block
-
-*/
-
-SCREENDESCRIPTORBLOCK ScreenDescriptorBlock;
-
-
-/*
-
- View Descriptor Blocks
-
-*/
-
-	int NumFreeVDBs;
-	VIEWDESCRIPTORBLOCK *FreeVDBList[maxvdbs];
-	static VIEWDESCRIPTORBLOCK **FreeVDBListPtr = &FreeVDBList[maxvdbs-1];
-
-	int NumActiveVDBs;
-	VIEWDESCRIPTORBLOCK *ActiveVDBList[maxvdbs];
-	static VIEWDESCRIPTORBLOCK **ActiveVDBListPtr = &ActiveVDBList[0];
-
-	static VIEWDESCRIPTORBLOCK FreeVDBData[maxvdbs];
-
-
-/* Clip Plane Block */
-
-	static CLIPPLANEPOINTS ClipPlanePoints;
-
-
-
-extern int GlobalAmbience;
-
-/*
-
- Support Functions
-
-*/
-
-
-/*
-
- Calculate View Volume Planes from the Clip Boundaries for a VDB
-
- Before doing this, check that the requested boundaries are within those of
- the physical sceen. If any boundary transgresses, truncate it and set the
- appropriate flag bit.
-
-*/
-
-void VDBClipPlanes(VIEWDESCRIPTORBLOCK *vdb)
-
-{
-
-
-/* Check Clip Boundaries against the Physical Screen */
-
-
-	/* Check Left Boundary */
-
-	if(vdb->VDB_ClipLeft < ScreenDescriptorBlock.SDB_ClipLeft) {
-
-		vdb->VDB_ClipLeft = ScreenDescriptorBlock.SDB_ClipLeft;
-		vdb->VDB_Flags |= ViewDB_Flag_LTrunc;
-
-	}
-
-	/* Check Right Boundary */
-
-	if(vdb->VDB_ClipRight > ScreenDescriptorBlock.SDB_ClipRight) {
-
-		vdb->VDB_ClipRight = ScreenDescriptorBlock.SDB_ClipRight;
-		vdb->VDB_Flags |= ViewDB_Flag_RTrunc;
-
-	}
-
-	/* Check Up boundary */
-
-	if(vdb->VDB_ClipUp < ScreenDescriptorBlock.SDB_ClipUp) {
-
-		vdb->VDB_ClipUp = ScreenDescriptorBlock.SDB_ClipUp;
-		vdb->VDB_Flags |= ViewDB_Flag_UTrunc;
-
-	}
-
-	/* Check Down boundary */
-
-	if(vdb->VDB_ClipDown > ScreenDescriptorBlock.SDB_ClipDown) {
-
-		vdb->VDB_ClipDown = ScreenDescriptorBlock.SDB_ClipDown;
-		vdb->VDB_Flags |= ViewDB_Flag_DTrunc;
-
-	}
-
-
-/* Calculate Width and Height */
-
-	/* textprint("current wh = %d, %d\n", vdb->VDB_Width, vdb->VDB_Height); */
-
-	/* Width */
-
-	vdb->VDB_Width = vdb->VDB_ClipRight - vdb->VDB_ClipLeft;
-
-	/* Height */
-
-	vdb->VDB_Height = vdb->VDB_ClipDown - vdb->VDB_ClipUp;
-
-	#if 0
-	textprint("new wh = %d, %d\n", vdb->VDB_Width, vdb->VDB_Height);
-	WaitForReturn();
-	#endif
-
-
-/* Set up the Clip Planes */
-
-
-	/* Clip Left */
-
-	ClipPlanePoints.cpp1.vx = vdb->VDB_ClipLeft;
-	ClipPlanePoints.cpp1.vy = vdb->VDB_ClipUp;
-	ClipPlanePoints.cpp1.vz = NearZ;
-
-	ClipPlanePoints.cpp2.vx = vdb->VDB_ClipLeft;
-	ClipPlanePoints.cpp2.vy = (vdb->VDB_ClipUp + vdb->VDB_ClipDown) / 2;
-	ClipPlanePoints.cpp2.vz = FarZ;
-
-	ClipPlanePoints.cpp3.vx = vdb->VDB_ClipLeft;
-	ClipPlanePoints.cpp3.vy = vdb->VDB_ClipDown;
-	ClipPlanePoints.cpp3.vz = NearZ;
-
-	MakeClipPlane(vdb, &vdb->VDB_ClipLeftPlane, &ClipPlanePoints);
-
-
-	/* Clip Right */
-
-	ClipPlanePoints.cpp1.vx = vdb->VDB_ClipRight;
-	ClipPlanePoints.cpp1.vy = vdb->VDB_ClipUp;
-	ClipPlanePoints.cpp1.vz = NearZ;
-
-	ClipPlanePoints.cpp2.vx = vdb->VDB_ClipRight;
-	ClipPlanePoints.cpp2.vy = vdb->VDB_ClipDown;
-	ClipPlanePoints.cpp2.vz = NearZ;
-
-	ClipPlanePoints.cpp3.vx = vdb->VDB_ClipRight;
-	ClipPlanePoints.cpp3.vy = (vdb->VDB_ClipUp + vdb->VDB_ClipDown) / 2;
-	ClipPlanePoints.cpp3.vz = FarZ;
-
-	MakeClipPlane(vdb, &vdb->VDB_ClipRightPlane, &ClipPlanePoints);
-
-
-	/* Clip Up */
-
-	ClipPlanePoints.cpp1.vx = vdb->VDB_ClipLeft;
-	ClipPlanePoints.cpp1.vy = vdb->VDB_ClipUp;
-	ClipPlanePoints.cpp1.vz = NearZ;
-
-	ClipPlanePoints.cpp2.vx = vdb->VDB_ClipRight;
-	ClipPlanePoints.cpp2.vy = vdb->VDB_ClipUp;
-	ClipPlanePoints.cpp2.vz = NearZ;
-
-	ClipPlanePoints.cpp3.vx = (vdb->VDB_ClipLeft + vdb->VDB_ClipRight) / 2;
-	ClipPlanePoints.cpp3.vy = vdb->VDB_ClipUp;
-	ClipPlanePoints.cpp3.vz = FarZ;
-
-	MakeClipPlane(vdb, &vdb->VDB_ClipUpPlane, &ClipPlanePoints);
-
-
-	/* Clip Down */
-
-	ClipPlanePoints.cpp1.vx = vdb->VDB_ClipLeft;
-	ClipPlanePoints.cpp1.vy = vdb->VDB_ClipDown;
-	ClipPlanePoints.cpp1.vz = NearZ;
-
-	ClipPlanePoints.cpp2.vx = (vdb->VDB_ClipLeft + vdb->VDB_ClipRight) / 2;
-	ClipPlanePoints.cpp2.vy = vdb->VDB_ClipDown;
-	ClipPlanePoints.cpp2.vz = FarZ;
-
-	ClipPlanePoints.cpp3.vx = vdb->VDB_ClipRight;
-	ClipPlanePoints.cpp3.vy = vdb->VDB_ClipDown;
-	ClipPlanePoints.cpp3.vz = NearZ;
-
-	MakeClipPlane(vdb, &vdb->VDB_ClipDownPlane, &ClipPlanePoints);
-
-
-/* Clip Z */
-
-	vdb->VDB_ClipZPlane.CPB_Normal.vx = 0;
-	vdb->VDB_ClipZPlane.CPB_Normal.vy = 0;
-	vdb->VDB_ClipZPlane.CPB_Normal.vz = -ONE_FIXED;
-
-	vdb->VDB_ClipZPlane.CPB_POP.vx = 0;
-	vdb->VDB_ClipZPlane.CPB_POP.vy = 0;
-	vdb->VDB_ClipZPlane.CPB_POP.vz = vdb->VDB_ClipZ;
-
-}
-
-
-/*
-
- Make a Clip Plane.
-
- Reverse Project the three Clip Points (overwrite their struct).
-
- Use the first Clip Point as the POP, writing this to the CPB.
-
- Pass the three Clip Points to MakeNormal() specifying the CPB Normal as
- the destination.
-
- NOTES
-
- The vdb is passed for the reverse projection.
-
-*/
-
-void MakeClipPlane(
-
-VIEWDESCRIPTORBLOCK *vdb,
-CLIPPLANEBLOCK *cpb,
-CLIPPLANEPOINTS *cpp)
-
-{
-
-	int x, y;
-
-/* Reverse Project the Clip Points */
-
-
-/* cpp1 */
-
-/* x */
-
-	x=cpp->cpp1.vx;
-	x-=vdb->VDB_CentreX;
-	x*=cpp->cpp1.vz;
-	x/=vdb->VDB_ProjX;
-	cpp->cpp1.vx=x;
-
-/* y */
-
-	y=cpp->cpp1.vy;
-	y-=vdb->VDB_CentreY;
-	y*=cpp->cpp1.vz;
-	y/=vdb->VDB_ProjY;
-	cpp->cpp1.vy=y;
-
-
-/* cpp2 */
-
-/* x */
-
-	x=cpp->cpp2.vx;
-	x-=vdb->VDB_CentreX;
-	x*=cpp->cpp2.vz;
-	x/=vdb->VDB_ProjX;
-	cpp->cpp2.vx=x;
-
-/* y */
-
-	y=cpp->cpp2.vy;
-	y-=vdb->VDB_CentreY;
-	y*=cpp->cpp2.vz;
-	y/=vdb->VDB_ProjY;
-	cpp->cpp2.vy=y;
-
-
-/* cpp3 */
-
-/* x */
-
-	x=cpp->cpp3.vx;
-	x-=vdb->VDB_CentreX;
-	x*=cpp->cpp3.vz;
-	x/=vdb->VDB_ProjX;
-	cpp->cpp3.vx=x;
-
-/* y */
-
-	y=cpp->cpp3.vy;
-	y-=vdb->VDB_CentreY;
-	y*=cpp->cpp3.vz;
-	y/=vdb->VDB_ProjY;
-	cpp->cpp3.vy=y;
-
-/* The 1st Clip Point can be the POP */
-
-	cpb->CPB_POP.vx=cpp->cpp1.vx;
-	cpb->CPB_POP.vy=cpp->cpp1.vy;
-	cpb->CPB_POP.vz=cpp->cpp1.vz;
-
-/* Make CPB_Normal */
-
-	MakeNormal(&cpp->cpp1, &cpp->cpp2, &cpp->cpp3, &cpb->CPB_Normal);
-
-}
-
-
-#if pc_backdrops
-
-/*
-
- Create the projector array used for cylindrically projected backdrops
-
- The array looks like this
-
-	unsigned short VDB_ProjectorXOffsets[MaxScreenWidth];
-
- For each centre relative x there is a projector. Using just the x and z
- components of the projector an angular offset from the centre (0) can be
- calculated using ArcTan().
-
- To calculate a projector one must reverse project each x value at a given
- z value. Rather than go on to create the normalised projector vector we can
- go straight to the ArcTan() to find the angular offset.
-
-*/
-
-static void CreateProjectorArray(VIEWDESCRIPTORBLOCK *vdb)
-
-{
-
-	int sx, x, vx, vz, i, ao;
-
-
-	vz = ONE_FIXED;
-
-	sx = vdb->VDB_ClipLeft;
-
-	i = 0;
-
-	while(sx < vdb->VDB_ClipRight) {
-
-		x = sx - vdb->VDB_CentreX;
-
-		vx = (x * vz) / vdb->VDB_ProjX;
-
-		ao = ArcTan(vx, vz);
-
-		vdb->VDB_ProjectorXOffsets[i] = ao;
-
-		#if 0
-		textprint("Pr. Offset %d = %u\n", i, vdb->VDB_ProjectorXOffsets[i]);
-		WaitForReturn();
-		#endif
-
-		sx++; i++;
-
-	}
-
-}
-
-#endif
-
-
-
-
-
-
-/*
-
- SetVDB requires a VIEWDESCRIPTORBLOCK
-
- See the actual function code for what each parameter is
-
-*/
-
-void SetVDB(vdb, fl, ty, d, cx,cy, prx,pry, mxp, cl,cr,cu,cd, h1,h2,hc, amb)
-
-	VIEWDESCRIPTORBLOCK *vdb;
-
-	int fl;
-	int ty;
-
-	int d;
-
-	int cx;
-	int cy;
-
-	int prx;
-	int pry;
-	int mxp;
-
-	int cl;
-	int cr;
-	int cu;
-	int cd;
-
-	int h1;
-	int h2;
-	int hc;
-
-	int amb;
-
-{
-
-
-
-	/* Initial setup */
-
-	vdb->VDB_Flags			= fl;
-	vdb->VDB_ViewType		= ty;
-
-
-	/* Ambience */
-
-	vdb->VDB_Ambience = amb;
-	/* KJL 14:30:57 05/14/97 - set globalAmbience here as well */
-	GlobalAmbience = amb;
-
-	/* Width and Height are set by the Clip Boundaries */
-
-	if(vdb->VDB_Flags & ViewDB_Flag_FullSize) {
-
-		vdb->VDB_Depth			= ScreenDescriptorBlock.SDB_Depth;
-
-        #if SupportWindows95
-        vdb->VDB_ScreenDepth    = ScreenDescriptorBlock.SDB_ScreenDepth;
-		#endif
-
-		vdb->VDB_CentreX		= ScreenDescriptorBlock.SDB_CentreX;
-		vdb->VDB_CentreY		= ScreenDescriptorBlock.SDB_CentreY;
-
-		vdb->VDB_ProjX			= ScreenDescriptorBlock.SDB_ProjX;
-		vdb->VDB_ProjY			= ScreenDescriptorBlock.SDB_ProjY;
-		vdb->VDB_MaxProj		= ScreenDescriptorBlock.SDB_MaxProj;
-
-		vdb->VDB_ClipLeft		= ScreenDescriptorBlock.SDB_ClipLeft;
-		vdb->VDB_ClipRight	= ScreenDescriptorBlock.SDB_ClipRight;
-		vdb->VDB_ClipUp		= ScreenDescriptorBlock.SDB_ClipUp;
-		vdb->VDB_ClipDown		= ScreenDescriptorBlock.SDB_ClipDown;
-
-	}
-
-	else {
-
-        #if SupportWindows95
-		 if (ScanDrawMode == ScanDrawDirectDraw)
-		   vdb->VDB_Depth			= d;
-		 else
-		   vdb->VDB_Depth = VideoModeType_24;
-
-        vdb->VDB_ScreenDepth    = ScreenDescriptorBlock.SDB_ScreenDepth;
-		#else
-		vdb->VDB_Depth			= d;
-		#endif
-
-		vdb->VDB_CentreX		= cx;
-		vdb->VDB_CentreY		= cy;
-
-		vdb->VDB_ProjX			= prx;
-		vdb->VDB_ProjY			= pry;
-		vdb->VDB_MaxProj		= mxp;
-
-		vdb->VDB_ClipLeft		= cl;
-		vdb->VDB_ClipRight	= cr;
-		vdb->VDB_ClipUp		= cu;
-		vdb->VDB_ClipDown		= cd;
-
-		if(vdb->VDB_Flags & ViewDB_Flag_AdjustScale) {
-
-			vdb->VDB_CentreX =
-				WideMulNarrowDiv(
-					vdb->VDB_CentreX,
-					ScreenDescriptorBlock.SDB_Width,
-					320);
-
-			vdb->VDB_CentreY =
-				WideMulNarrowDiv(
-					vdb->VDB_CentreY,
-					ScreenDescriptorBlock.SDB_Height,
-					200);
-
-
-			vdb->VDB_ProjX =
-				WideMulNarrowDiv(
-					vdb->VDB_ProjX,
-					ScreenDescriptorBlock.SDB_Width,
-					320);
-
-			vdb->VDB_ProjY =
-				WideMulNarrowDiv(
-					vdb->VDB_ProjY,
-					ScreenDescriptorBlock.SDB_Height,
-					200);
-
-			vdb->VDB_MaxProj =
-				WideMulNarrowDiv(
-					vdb->VDB_MaxProj,
-					ScreenDescriptorBlock.SDB_Width,
-					320);
-
-
-			vdb->VDB_ClipLeft =
-				WideMulNarrowDiv(
-					vdb->VDB_ClipLeft,
-					ScreenDescriptorBlock.SDB_Width,
-					320);
-
-			vdb->VDB_ClipRight =
-				WideMulNarrowDiv(
-					vdb->VDB_ClipRight,
-					ScreenDescriptorBlock.SDB_Width,
-					320);
-
-			vdb->VDB_ClipUp =
-				WideMulNarrowDiv(
-					vdb->VDB_ClipUp,
-					ScreenDescriptorBlock.SDB_Height,
-					200);
-
-			vdb->VDB_ClipDown =
-				WideMulNarrowDiv(
-					vdb->VDB_ClipDown,
-					ScreenDescriptorBlock.SDB_Height,
-					200);
-
-		}
-
-	}
-
-
-	/* Create the clip planes */
-
-	/* KJL 10:41:13 04/09/97 - set to constant so the same for all screen sizes! */
-	vdb->VDB_ClipZ = 64;//vdb->VDB_MaxProj;	/* Safe */
-
-	VDBClipPlanes(vdb);
-
-	#if 0
-	/* View Angle */
-
-	if(vdb->VDB_CentreX > vdb->VDB_CentreY) s = vdb->VDB_CentreX;
-	else s = vdb->VDB_CentreY;
-
-	z = vdb->VDB_MaxProj * 100;
-
-	x = (s * z) / vdb->VDB_MaxProj;
-
-	vdb->VDB_ViewAngle = ArcTan(x, z);
-
-	vdb->VDB_ViewAngleCos = GetCos(vdb->VDB_ViewAngle);
-
-
-	#if 0
-	textprint("View Angle = %d\n", vdb->VDB_ViewAngle);
-	WaitForReturn();
-	#endif
-
-
-	#if pc_backdrops
-
-	/* Projector Array */
-
-	CreateProjectorArray(vdb);
-
-	#endif
-
-
-	/* Hazing & Background Colour */
-
-	vdb->VDB_H1				= h1;
-	vdb->VDB_H2				= h2;
-	vdb->VDB_HInterval	= h2 - h1;
-	vdb->VDB_HColour		= hc;
-	#endif
-}
-
-
-
-
-/*
-
- Initialise the Free VDB List
-
-*/
-
-void InitialiseVDBs(void)
-
-{
-
-	VIEWDESCRIPTORBLOCK *FreeVDBPtr = &FreeVDBData[0];
-
-	NumActiveVDBs = 0;
-
-	for(NumFreeVDBs = 0; NumFreeVDBs < maxvdbs; NumFreeVDBs++) {
-
-		FreeVDBList[NumFreeVDBs] = FreeVDBPtr;
-
-		FreeVDBPtr++;
-
-	}
-
-	FreeVDBListPtr   = &FreeVDBList[maxvdbs-1];
-	ActiveVDBListPtr = &ActiveVDBList[0];
-
-}
-
-
-/*
-
- Get a VDB from the Free VDB list
-
-*/
-
-VIEWDESCRIPTORBLOCK* AllocateVDB(void)
-
-{
-
-	VIEWDESCRIPTORBLOCK *FreeVDBPtr = 0;	/* Default to null ptr */
-	int *i_src;
-	int i;
-
-
-	if(NumFreeVDBs) {
-
-		FreeVDBPtr = *FreeVDBListPtr--;
-
-		NumFreeVDBs -= 1;							/* One less free block */
-
-		/* Clear the block */
-
-		i_src = (int *) FreeVDBPtr;
-		for(i = sizeof(VIEWDESCRIPTORBLOCK)/4; i!=0; i--)
-			*i_src++ = 0;
-
-	}
-
-	return(FreeVDBPtr);
-
-}
-
-
-/*
-
- Return a VDB to the Free VDB list
-
-*/
-
-void DeallocateVDB(VIEWDESCRIPTORBLOCK *vdb)
-
-{
-
-	FreeVDBListPtr++;
-	*FreeVDBListPtr = vdb;
-
-	NumFreeVDBs++;							/* One more free block */
-
-}
-
-
-/*
-
- Allocate a VDB and make it active
-
-*/
-
-VIEWDESCRIPTORBLOCK* CreateActiveVDB(void)
-
-{
-
-	VIEWDESCRIPTORBLOCK *vdb;
-	VIEWDESCRIPTORBLOCK *vdb_tmp;
-	VIEWDESCRIPTORBLOCK **v_src;
-
-	int v;
-	int p = -1;
-
-
-	vdb = AllocateVDB();
-
-	if(vdb) {
-
-		/* Find the next "VDB_Priority" */
-
-		if(NumActiveVDBs) {
-
-			v_src = &ActiveVDBList[0];
-
-			for(v = NumActiveVDBs; v!=0; v--) {
-
-				vdb_tmp = *v_src++;
-
-				if(vdb_tmp->VDB_Priority > p) p = vdb_tmp->VDB_Priority;
-
-			}
-
-		}
-
-		/* Set the VDB priority */
-
-		vdb->VDB_Priority = (p + 1);
-
-		/* Update the active VDB list */
-
-		*ActiveVDBListPtr++ = vdb;
-
-		NumActiveVDBs++;
-
-	}
-
-	return vdb;
-
-}
-
-
-/*
-
- Deallocate an active VDB
-
-*/
-
-int DestroyActiveVDB(dblockptr)
-
-	VIEWDESCRIPTORBLOCK *dblockptr;
-
-{
-
-	int j = -1;
-	int i;
-
-
-	/* If the VDB ptr is OK, search the Active VDB List */
-
-	if(dblockptr) {
-
-		for(i = 0; i < NumActiveVDBs && j!=0; i++) {
-
-			if(ActiveVDBList[i] == dblockptr) {
-
-				#if ProjectSpecificVDBs
-				ProjectSpecificVDBDestroy(dblockptr);
-				#endif
-
-				ActiveVDBList[i] = ActiveVDBList[NumActiveVDBs - 1];
-				NumActiveVDBs--;
-				ActiveVDBListPtr--;
-				DeallocateVDB(dblockptr);		/* Return VDB to Free List */
-				j = 0;								/* Flag OK */
-
-			}
-		}
-	}
-
-	return(j);
-
-}