//========================================================================================
// geCamera_FillDriverInfo
// HACK!!!!
//========================================================================================
void geCamera_FillDriverInfo(geCamera *Camera)
{
// this is for the software driver to cache out some stuff
#pragma message ("Camera.c : remove _FillDriverInfo, and thereby GlobalInfo!" )
extern GInfo GlobalInfo;
assert(Camera);
GlobalInfo.XScale =-Camera->Scale;
GlobalInfo.YScale =-Camera->Scale;
GlobalInfo.XScaleInv =1.0f / GlobalInfo.XScale;
GlobalInfo.YScaleInv =1.0f / GlobalInfo.YScale;
GlobalInfo.XCenter =Camera->XCenter;
GlobalInfo.YCenter =Camera->YCenter;
// Temp hack
GlobalInfo.CXForm =Camera->XForm;
GlobalInfo.Pov =Camera->Pov;
GlobalInfo.ZScale =Camera->ZScale;
geXForm3d_Rotate(&Camera->XForm, &GlobalInfo.Pov, &GlobalInfo.CPov);
}
//========================================================================================
// geCamera_ConvertWorldSpaceToCameraSpace
// Converts a worldspace Xform to a cameraspace xform
//========================================================================================
GENESISAPI geBoolean GENESISCC geCamera_ConvertWorldSpaceToCameraSpace(const geXForm3d *WXForm, geXForm3d *CXForm)
{
// The rotation portion is just the transpose of the model xform
CXForm->AX = WXForm->AX;
CXForm->AY = WXForm->BX;
CXForm->AZ = WXForm->CX;
CXForm->BX = WXForm->AY;
CXForm->BY = WXForm->BY;
CXForm->BZ = WXForm->CY;
CXForm->CX = WXForm->AZ;
CXForm->CY = WXForm->BZ;
CXForm->CZ = WXForm->CZ;
CXForm->Translation = WXForm->Translation;
geVec3d_Inverse(&CXForm->Translation);
// Rotate the translation in the new camera matrix
geXForm3d_Rotate(CXForm, &CXForm->Translation, &CXForm->Translation);
return GE_TRUE;
}
Brush *BrushTemplate_CreateCylinder (const BrushTemplate_Cylinder *pTemplate)
{
double CurrentXDiameter, CurrentZDiameter;
double DeltaXDiameter, DeltaZDiameter;
double CurrentXOffset, CurrentZOffset;
double DeltaXOffset, DeltaZOffset, sqrcheck;
double EllipseZ;
int NumVerticalBands, HBand, VBand;
int VertexCount=0;
geVec3d *Verts, *TopPoints;
geVec3d Current, Final, Delta;
geXForm3d YRotation;
FaceList *fl;
Face *f;
Brush *b;
NumVerticalBands = (int)(pTemplate->VerticalStripes);
if (NumVerticalBands < 3)
{
return NULL;
}
Verts =(geVec3d *)geRam_Allocate(sizeof(geVec3d)*NumVerticalBands * 2);
TopPoints =(geVec3d *)geRam_Allocate(sizeof(geVec3d)*NumVerticalBands);
fl =FaceList_Create(NumVerticalBands + 2);
if(!Verts || !TopPoints ||!fl)
{
return NULL;
}
geXForm3d_SetIdentity(&YRotation);
geXForm3d_SetYRotation(&YRotation, (M_PI * 2.0f)/(geFloat)NumVerticalBands);
// Start with the top of cylinder
CurrentXDiameter =pTemplate->TopXSize;
CurrentZDiameter =pTemplate->TopZSize;
DeltaXDiameter =(pTemplate->BotXSize - pTemplate->TopXSize);
DeltaZDiameter =(pTemplate->BotZSize - pTemplate->TopZSize);
// Get the offset amounts
CurrentXOffset =pTemplate->TopXOffset;
CurrentZOffset =pTemplate->TopZOffset;
DeltaXOffset =(pTemplate->BotXOffset - pTemplate->TopXOffset);
DeltaZOffset =(pTemplate->BotZOffset - pTemplate->TopZOffset);
// Get the band positions and deltas
geVec3d_Set(&Current, (float)(pTemplate->TopXSize / 2), (float)(pTemplate->YSize / 2), 0.0);
geVec3d_Set(&Delta, (float)((pTemplate->BotXSize / 2) - Current.X), (float)(-(pTemplate->YSize/2) - Current.Y), 0.0);
for(HBand = 0;HBand <= 1;HBand++)
{
Final = Current;
for(VBand = 0;VBand < NumVerticalBands;VBand++)
{
// Get the elliptical Z value
// (x^2/a^2) + (z^2/b^2) = 1
// z = sqrt(b^2(1 - x^2/a^2))
sqrcheck=( ((CurrentZDiameter/2)*(CurrentZDiameter/2))
* (1.0 - (Final.X*Final.X)
/ ( (CurrentXDiameter/2)*(CurrentXDiameter/2) )) );
if(sqrcheck <0.0)
sqrcheck=0.0;
EllipseZ = sqrt(sqrcheck);
// Check if we need to negate this thing
if(VBand > (NumVerticalBands/2))
EllipseZ = -EllipseZ;
geVec3d_Set
(
&Verts[VertexCount],
(float)(Final.X + CurrentXOffset),
Final.Y,
(float)(EllipseZ + CurrentZOffset)
);
VertexCount++;
// Rotate the point around the Y to get the next vertical band
geXForm3d_Rotate(&YRotation, &Final, &Final);
}
CurrentXDiameter +=DeltaXDiameter;
CurrentZDiameter +=DeltaZDiameter;
CurrentXOffset +=DeltaXOffset;
CurrentZOffset +=DeltaZOffset;
geVec3d_Add(&Current, &Delta, &Current);
}
for(VBand=0;VBand < NumVerticalBands;VBand++)
{
TopPoints[VBand] =Verts[VBand];
}
f =Face_Create(NumVerticalBands, TopPoints, 0);
if(f)
{
if(pTemplate->Solid > 1)
{
Face_SetFixedHull(f, GE_TRUE);
}
FaceList_AddFace(fl, f);
}
for(VBand=NumVerticalBands-1, HBand=0;VBand >=0;VBand--, HBand++)
{
TopPoints[HBand] =Verts[VBand + NumVerticalBands];
}
f =Face_Create(NumVerticalBands, TopPoints, 0);
if(f)
{
if(pTemplate->Solid > 1)
{
Face_SetFixedHull(f, GE_TRUE);
}
FaceList_AddFace(fl, f);
}
// Generate the polygons
for(HBand = 0;HBand < 1;HBand++)
{
for(VBand = 0;VBand < NumVerticalBands;VBand++)
{
TopPoints[3] =Verts[(HBand * NumVerticalBands) + VBand];
TopPoints[2] =Verts[(HBand * NumVerticalBands) + ((VBand + 1) % NumVerticalBands)];
TopPoints[1] =Verts[((HBand + 1) * NumVerticalBands) + ((VBand + 1) % NumVerticalBands)];
TopPoints[0] =Verts[((HBand + 1) * NumVerticalBands) + VBand];
f =Face_Create(4, TopPoints, 0);
if(f)
{
FaceList_AddFace(fl, f);
}
}
}
geRam_Free(Verts);
geRam_Free(TopPoints);
if(!pTemplate->Solid)
{
b =Brush_Create(BRUSH_LEAF, fl, NULL);
if(b)
{
Brush_SetSubtract(b, pTemplate->TCut);
}
return b;
}
else
{
BrushList *bl =BrushList_Create();
Brush *bh, *bm;
b =Brush_Create(BRUSH_LEAF, fl, NULL);
if(b)
{
Brush_SetHollow(b, GE_TRUE);
Brush_SetHullSize(b, (float)pTemplate->Thickness);
bh =Brush_CreateHollowFromBrush(b);
if(bh)
{
Brush_SetHollowCut(bh, GE_TRUE);
BrushList_Append(bl, b);
BrushList_Append(bl, bh);
bm =Brush_Create(BRUSH_MULTI, NULL, bl);
if(bm)
{
Brush_SetHollow(bm, GE_TRUE);
Brush_SetSubtract(bm, pTemplate->TCut);
Brush_SetHullSize(bm, (float)pTemplate->Thickness);
return bm;
}
}
else
{
Brush_Destroy(&b);
BrushList_Destroy(&bl);
}
}
else
{
BrushList_Destroy(&bl);
}
}
return NULL;
}
