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Camera.c File Reference

#include <math.h>
#include <Assert.h>
#include <Memory.h>
#include "Camera.h"
#include "Ram.h"
#include "ErrorLog.h"
#include "DCommon.h"

Go to the source code of this file.

Compounds

struct  geCamera

Defines

#define max(AA, BB)   ( ((AA)>(BB)) ?(AA):(BB) )
#define CAMERA_MINIMUM_PROJECTION_DISTANCE   (0.010f)
#define TOO_SMALL   (0.0001f)

Typedefs

typedef geCamera geCamera

Functions

GENESISAPI geCamera *GENESISCC geCamera_Create (geFloat Fov, const geRect *Rect)
GENESISAPI void GENESISCC geCamera_Destroy (geCamera **pCamera)
GENESISAPI void GENESISCC geCamera_SetZScale (geCamera *Camera, geFloat ZScale)
GENESISAPI geFloat GENESISCC geCamera_GetZScale (const geCamera *Camera)
GENESISAPI void GENESISCC geCamera_SetFarClipPlane (geCamera *Camera, geBoolean Enable, geFloat ZFar)
GENESISAPI void GENESISCC geCamera_GetFarClipPlane (const geCamera *Camera, geBoolean *Enable, geFloat *ZFar)
GENESISAPI void GENESISCC geCamera_GetClippingRect (const geCamera *Camera, geRect *Rect)
void GENESISCC geCamera_GetWidthHeight (const geCamera *Camera, geFloat *Width, geFloat *Height)
geFloat GENESISCC geCamera_GetScale (const geCamera *Camera)
GENESISAPI void GENESISCC geCamera_SetAttributes (geCamera *Camera, geFloat Fov, const geRect *Rect)
void geCamera_FillDriverInfo (geCamera *Camera)
GENESISAPI void GENESISCC geCamera_ScreenPointToWorld (const geCamera *Camera, int32 ScreenX, int32 ScreenY, geVec3d *Vector)
GENESISAPI void GENESISCC geCamera_Project (const geCamera *Camera, const geVec3d *PointInCameraSpace, geVec3d *ProjectedPoint)
GENESISAPI void GENESISCC geCamera_ProjectZ (const geCamera *Camera, const geVec3d *PointInCameraSpace, geVec3d *ProjectedPoint)
void GENESISCC geCamera_ProjectAndClamp (const geCamera *Camera, const geVec3d *PointInCameraSpace, geVec3d *ProjectedPoint)
void GENESISCC geCamera_GetViewAngleXSinCos (const geCamera *Camera, geFloat *SinAngle, geFloat *CosAngle)
void GENESISCC geCamera_GetViewAngleYSinCos (const geCamera *Camera, geFloat *SinAngle, geFloat *CosAngle)
GENESISAPI void GENESISCC geCamera_Transform (const geCamera *Camera, const geVec3d *WorldSpacePoint, geVec3d *CameraSpacePoint)
GENESISAPI void GENESISCC geCamera_TransformArray (const geCamera *Camera, const geVec3d *WorldSpacePointPtr, geVec3d *CameraSpacePointPtr, int count)
GENESISAPI void GENESISCC geCamera_TransformAndProjectArray (const geCamera *Camera, const geVec3d *WorldSpacePointPtr, geVec3d *ProjectedSpacePointPtr, int count)
GENESISAPI void GENESISCC geCamera_TransformAndProjectLArray (const geCamera *Camera, const GE_LVertex *WorldSpacePointPtr, GE_TLVertex *ProjectedSpacePointPtr, int count)
GENESISAPI void GENESISCC geCamera_TransformAndProject (const geCamera *Camera, const geVec3d *Point, geVec3d *ProjectedPoint)
GENESISAPI void GENESISCC geCamera_TransformAndProjectL (const geCamera *Camera, const GE_LVertex *Point, GE_TLVertex *ProjectedPoint)
GENESISAPI geBoolean GENESISCC geCamera_SetWorldSpaceXForm (geCamera *Camera, const geXForm3d *XForm)
GENESISAPI geBoolean GENESISCC geCamera_SetWorldSpaceVisXForm (geCamera *Camera, const geXForm3d *XForm)
GENESISAPI const geXForm3d
*GENESISCC 		geCamera_GetWorldSpaceXForm (const geCamera *Camera)
GENESISAPI const geXForm3d
*GENESISCC 		geCamera_GetCameraSpaceXForm (const geCamera *Camera)
GENESISAPI const geXForm3d
*GENESISCC 		geCamera_GetCameraSpaceVisXForm (const geCamera *Camera)
GENESISAPI const geXForm3d
*GENESISCC 		geCamera_GetWorldSpaceVisXForm (const geCamera *Camera)
const geVec3d *GENESISCC geCamera_GetPov (const geCamera *Camera)
const geVec3d *GENESISCC geCamera_GetVisPov (const geCamera *Camera)
GENESISAPI geBoolean GENESISCC geCamera_ConvertWorldSpaceToCameraSpace (const geXForm3d *WXForm, geXForm3d *CXForm)

Define Documentation

#define CAMERA_MINIMUM_PROJECTION_DISTANCE   (0.010f)
 

Definition at line 74 of file Camera.c.

Referenced by geCamera_Project(), geCamera_ProjectAndClamp(), geCamera_ProjectZ(), geCamera_TransformAndProject(), and geCamera_TransformAndProjectL().

#define max (  AA,
BB   )     ( ((AA)>(BB)) ?(AA):(BB) )
 

Definition at line 71 of file Camera.c.

#define TOO_SMALL   (0.0001f)
 

Typedef Documentation

typedef struct geCamera geCamera
 

Function Documentation

GENESISAPI geBoolean GENESISCC geCamera_ConvertWorldSpaceToCameraSpace (  const geXForm3d *  WXForm,
geXForm3d *  CXForm
) 
 

Definition at line 709 of file Camera.c.

References geXForm3d::AX, geXForm3d::AY, geXForm3d::AZ, geXForm3d::BX, geXForm3d::BY, geXForm3d::BZ, geXForm3d::CX, geXForm3d::CY, geXForm3d::CZ, GE_TRUE, geBoolean, GENESISAPI, GENESISCC, geVec3d_Inverse(), geXForm3d_Rotate(), and geXForm3d::Translation.

Referenced by geSound3D_GetConfig(), geSound3D_GetConfigIgnoreObstructions(), RenderSubModels(), and RenderWorldModel(). 

00710 {
00711         // The rotation portion is just the transpose of the model xform
00712         CXForm->AX = WXForm->AX;
00713         CXForm->AY = WXForm->BX;
00714         CXForm->AZ = WXForm->CX;
00715 
00716         CXForm->BX = WXForm->AY;
00717         CXForm->BY = WXForm->BY;
00718         CXForm->BZ = WXForm->CY;
00719 
00720         CXForm->CX = WXForm->AZ;
00721         CXForm->CY = WXForm->BZ;
00722         CXForm->CZ = WXForm->CZ;
00723 
00724         CXForm->Translation = WXForm->Translation;
00725 
00726         geVec3d_Inverse(&CXForm->Translation);
00727 
00728         // Rotate the translation in the new camera matrix
00729         geXForm3d_Rotate(CXForm, &CXForm->Translation, &CXForm->Translation);
00730 
00731         return GE_TRUE;
00732 }

GENESISAPI geCamera* GENESISCC geCamera_Create (  geFloat  Fov,
const geRect *  Rect
) 
 

Definition at line 79 of file Camera.c.

References GE_RAM_ALLOCATE_STRUCT, GE_TRUE, geCamera_SetAttributes(), geErrorLog_Add, GENESISAPI, GENESISCC, NULL, geCamera::ZFar, geCamera::ZFarEnable, and geCamera::ZScale.

Referenced by DoSplashScreen(), and GameMgr_SetDriverAndMode(). 

00080 {
00081         geCamera *Camera;
00082 
00083         assert( Rect != NULL );
00084 
00085         Camera = GE_RAM_ALLOCATE_STRUCT(geCamera);
00086         if (Camera == NULL)
00087                 {
00088                         geErrorLog_Add(-1, NULL); //FIXME
00089                         return NULL;
00090                 }
00091 
00092         memset(Camera, 0, sizeof(geCamera));
00093 
00094         Camera->ZScale = 0.5f;
00095 
00096 #if 0
00097         Camera->ZFar = 1000.0f;
00098         Camera->ZFarEnable = GE_TRUE;
00099 #endif
00100 
00101         geCamera_SetAttributes(Camera,Fov,Rect);
00102         return Camera;
00103 }

GENESISAPI void GENESISCC geCamera_Destroy (  geCamera **  pCamera  ) 
 

Definition at line 108 of file Camera.c.

References GENESISAPI, GENESISCC, geRam_Free, and NULL.

Referenced by DoSplashScreen(), GameMgr_FreeAllObjects(), and GameMgr_PrepareToChangeMode(). 

00109 {
00110         assert( pCamera  != NULL );
00111         assert( *pCamera != NULL );
00112         geRam_Free(*pCamera);
00113         *pCamera = NULL;
00114 }

void geCamera_FillDriverInfo (  geCamera *  Camera  ) 
 

Definition at line 259 of file Camera.c.

References GInfo::CPov, GInfo::CXForm, geXForm3d_Rotate(), GlobalInfo, GInfo::Pov, geCamera::Pov, geCamera::Scale, GInfo::XCenter, geCamera::XCenter, geCamera::XForm, GInfo::XScale, GInfo::XScaleInv, GInfo::YCenter, geCamera::YCenter, GInfo::YScale, GInfo::YScaleInv, GInfo::ZScale, and geCamera::ZScale.

Referenced by RenderScene(), RenderSubModels(), and RenderWorldModel(). 

00260 {
00261         // this is for the software driver to cache out some stuff
00262 
00263 #pragma message ("Camera.c : remove _FillDriverInfo, and thereby GlobalInfo!" )
00264 extern GInfo GlobalInfo;
00265         assert(Camera);
00266 
00267         GlobalInfo.XScale               =-Camera->Scale;
00268         GlobalInfo.YScale               =-Camera->Scale;
00269         GlobalInfo.XScaleInv    =1.0f / GlobalInfo.XScale;
00270         GlobalInfo.YScaleInv    =1.0f / GlobalInfo.YScale;
00271         GlobalInfo.XCenter              =Camera->XCenter;
00272         GlobalInfo.YCenter              =Camera->YCenter;
00273 
00274         // Temp hack
00275         GlobalInfo.CXForm               =Camera->XForm;
00276         GlobalInfo.Pov                  =Camera->Pov;
00277         GlobalInfo.ZScale               =Camera->ZScale;
00278 
00279         geXForm3d_Rotate(&Camera->XForm, &GlobalInfo.Pov, &GlobalInfo.CPov);
00280 }

GENESISAPI const geXForm3d* GENESISCC geCamera_GetCameraSpaceVisXForm (  const geCamera *  Camera  ) 
 

Definition at line 660 of file Camera.c.

References GENESISAPI, GENESISCC, NULL, geCamera::UseVisPov, geCamera::VisXForm, and geCamera::XForm. 

00661 {
00662         assert(Camera != NULL);
00663 
00664         if (Camera->UseVisPov)
00665                 return &(Camera->VisXForm);
00666         else
00667                 return &(Camera->XForm);
00668 }

GENESISAPI const geXForm3d* GENESISCC geCamera_GetCameraSpaceXForm (  const geCamera *  Camera  ) 
 

Definition at line 651 of file Camera.c.

References GENESISAPI, GENESISCC, NULL, and geCamera::XForm.

Referenced by Frustum_RotateToWorldSpace(), Frustum_TransformToWorldSpace(), geBodyInst_GetGeometry(), gePuppet_Render(), geWorld_IsActorPotentiallyVisible(), RenderBSPFrontBack_r(), RenderFace(), RenderTransPoly(), SetupSkyForScene(), SetWorldspaceClipPlane(), and World_WorldRenderQ(). 

00652 {
00653         assert(Camera != NULL);
00654         return &(Camera->XForm);
00655 }

GENESISAPI void GENESISCC geCamera_GetClippingRect (  const geCamera *  Camera,
geRect *  Rect
) 
 

Definition at line 159 of file Camera.c.

References GE_Rect::Bottom, geCamera::Bottom, GENESISAPI, GENESISCC, int32, GE_Rect::Left, geCamera::Left, NULL, GE_Rect::Right, geCamera::Right, GE_Rect::Top, and geCamera::Top.

Referenced by geEngine_BeginFrame(), geEngine_DrawAlphaBitmap(), gePuppet_Render(), geWorld_IsActorPotentiallyVisible(), and RenderTexturedPoint(). 

00160 {
00161         assert( Camera != NULL );
00162         assert( Rect != NULL );
00163         Rect->Left   = (int32)Camera->Left;
00164         Rect->Right  = (int32)Camera->Right;
00165         Rect->Top    = (int32)Camera->Top;
00166         Rect->Bottom = (int32)Camera->Bottom;
00167 }

GENESISAPI void GENESISCC geCamera_GetFarClipPlane (  const geCamera *  Camera,
geBoolean *  Enable,
geFloat *  ZFar
) 
 

Definition at line 148 of file Camera.c.

References GENESISAPI, GENESISCC, geCamera::ZFar, and geCamera::ZFarEnable.

Referenced by Frustum_SetFromCamera(), and gePuppet_Render(). 

00149 {
00150         assert(Camera);
00151 
00152         *Enable = Camera->ZFarEnable;
00153         *ZFar = Camera->ZFar;
00154 }

const geVec3d* GENESISCC geCamera_GetPov (  const geCamera *  Camera  ) 
 

Definition at line 686 of file Camera.c.

References GENESISCC, NULL, and geCamera::Pov.

Referenced by Frustum_TransformToWorldSpace(), gePuppet_RenderThroughFrustum(), RenderBSPFrontBack_r(), RenderBSPFrontBack_r2(), RenderFace(), and World_WorldRenderQ(). 

00687 {
00688         assert( Camera != NULL );
00689         return &(Camera->Pov);
00690 }

geFloat GENESISCC geCamera_GetScale (  const geCamera *  Camera  ) 
 

Definition at line 185 of file Camera.c.

References geFloat, GENESISCC, NULL, and geCamera::Scale.

Referenced by RenderTexturedPoint(). 

00186 {
00187         assert( Camera != NULL );
00188 
00189         return Camera->Scale;
00190 }

void GENESISCC geCamera_GetViewAngleXSinCos (  const geCamera *  Camera,
geFloat *  SinAngle,
geFloat *  CosAngle
) 
 

Definition at line 441 of file Camera.c.

References geCamera::CosViewAngleX, GENESISCC, NULL, and geCamera::SinViewAngleX.

Referenced by Frustum_SetFromCamera(). 

00442 {
00443         assert( Camera != NULL );
00444         assert( SinAngle );
00445         assert( CosAngle );
00446         *SinAngle = Camera->SinViewAngleX;
00447         *CosAngle = Camera->CosViewAngleX;
00448 }

void GENESISCC geCamera_GetViewAngleYSinCos (  const geCamera *  Camera,
geFloat *  SinAngle,
geFloat *  CosAngle
) 
 

Definition at line 453 of file Camera.c.

References geCamera::CosViewAngleY, GENESISCC, NULL, and geCamera::SinViewAngleY.

Referenced by Frustum_SetFromCamera(). 

00454 {
00455         assert( Camera != NULL );
00456         assert( SinAngle );
00457         assert( CosAngle );
00458         *SinAngle = Camera->SinViewAngleY;
00459         *CosAngle = Camera->CosViewAngleY;
00460 }

const geVec3d* GENESISCC geCamera_GetVisPov (  const geCamera *  Camera  ) 
 

Definition at line 695 of file Camera.c.

References GENESISCC, NULL, geCamera::Pov, geCamera::UseVisPov, and geCamera::VisPov.

Referenced by Vis_VisWorld(). 

00696 {
00697         assert( Camera != NULL );
00698 
00699         if (Camera->UseVisPov)
00700                 return &(Camera->VisPov);
00701         else
00702                 return &(Camera->Pov);
00703 }

void GENESISCC geCamera_GetWidthHeight (  const geCamera *  Camera,
geFloat *  Width,
geFloat *  Height
) 
 

Definition at line 172 of file Camera.c.

References GENESISCC, geCamera::Height, NULL, and geCamera::Width.

Referenced by geEngine_RenderWorld(). 

00173 {
00174         assert( Width  != NULL );
00175         assert( Height != NULL );
00176         assert( Camera != NULL );
00177 
00178         *Width  = Camera->Width;
00179         *Height = Camera->Height;
00180 }

GENESISAPI const geXForm3d* GENESISCC geCamera_GetWorldSpaceVisXForm (  const geCamera *  Camera  ) 
 

Definition at line 673 of file Camera.c.

References GENESISAPI, GENESISCC, NULL, geCamera::TransposeVisXForm, geCamera::TransposeXForm, and geCamera::UseVisPov.

Referenced by geWorld_IsActorPotentiallyVisible(), and geWorld_IsSpritePotentiallyVisible(). 

00674 {
00675         assert(Camera != NULL);
00676 
00677         if (Camera->UseVisPov)
00678                 return &(Camera->TransposeVisXForm);
00679         else
00680                 return &(Camera->TransposeXForm);
00681 }

GENESISAPI const geXForm3d* GENESISCC geCamera_GetWorldSpaceXForm (  const geCamera *  Camera  ) 
 

Definition at line 642 of file Camera.c.

References GENESISAPI, GENESISCC, and geCamera::TransposeXForm.

Referenced by geSprite_CreateFrustumClippedScreenPoly(), geSprite_UpdateSurfaceNormalToFaceCamera(), geSprite_UpdateVertexesToFaceCamera(), RenderFace(), RenderSubModels(), RenderTexturedPoint(), RenderWorldModel(), and SetupSkyForScene(). 

00643 {
00644         assert(Camera );
00645         return &(Camera->TransposeXForm);
00646 }

GENESISAPI geFloat GENESISCC geCamera_GetZScale (  const geCamera *  Camera  ) 
 

Definition at line 128 of file Camera.c.

References geFloat, GENESISAPI, GENESISCC, and geCamera::ZScale.

Referenced by Frustum_SetFromCamera(). 

00129 {
00130         assert(Camera);
00131         return Camera->ZScale;
00132 }

GENESISAPI void GENESISCC geCamera_Project (  const geCamera *  Camera,
const geVec3d *  PointInCameraSpace,
geVec3d *  ProjectedPoint
) 
 

Definition at line 322 of file Camera.c.

References CAMERA_MINIMUM_PROJECTION_DISTANCE, geFloat, GENESISAPI, GENESISCC, NULL, geCamera::Scale, geVec3d::X, geCamera::XCenter, geVec3d::Y, geCamera::YCenter, Z, geVec3d::Z, and geCamera::ZScale.

Referenced by Frustum_ProjectRGBNoClamp(), geBodyInst_GetGeometry(), gePuppet_DrawShadow(), gePuppet_Render(), geWorld_IsActorPotentiallyVisible(), and RenderTexturedPoint(). 

00328 {
00329         geFloat ScaleOverZ;
00330         geFloat Z;
00331         assert( Camera != NULL );
00332         assert( PointInCameraSpace != NULL );
00333         assert( ProjectedPoint != NULL );
00334 
00335         Z = -PointInCameraSpace->Z;   
00336 
00337         if (Z < CAMERA_MINIMUM_PROJECTION_DISTANCE)
00338                 {
00339                         Z = CAMERA_MINIMUM_PROJECTION_DISTANCE; 
00340                 }
00341 
00342         ScaleOverZ = Camera->Scale / Z;
00343 
00344         ProjectedPoint->Z = Z*Camera->ZScale;   
00345 
00346         ProjectedPoint->X = ( PointInCameraSpace->X * ScaleOverZ ) + Camera->XCenter;
00347         
00348         ProjectedPoint->Y = Camera->YCenter - ( PointInCameraSpace->Y * ScaleOverZ );
00349 }

void GENESISCC geCamera_ProjectAndClamp (  const geCamera *  Camera,
const geVec3d *  PointInCameraSpace,
geVec3d *  ProjectedPoint
) 
 

Definition at line 393 of file Camera.c.

References geCamera::Bottom, CAMERA_MINIMUM_PROJECTION_DISTANCE, geFloat, GENESISCC, geCamera::Left, NULL, geCamera::Right, geCamera::Scale, geCamera::Top, geVec3d::X, geCamera::XCenter, geVec3d::Y, geCamera::YCenter, Z, geVec3d::Z, and geCamera::ZScale.

Referenced by Frustum_Project(), Frustum_ProjectRGB(), and Frustum_ProjectRGBA(). 

00400 {
00401         geFloat ScaleOverZ;
00402         geFloat X,Y,Z;
00403         assert( Camera != NULL );
00404         assert( PointInCameraSpace != NULL );
00405         assert( ProjectedPoint != NULL );
00406 
00407         Z = -PointInCameraSpace->Z;   
00408 
00409         if (Z < CAMERA_MINIMUM_PROJECTION_DISTANCE)
00410         {
00411                 Z = CAMERA_MINIMUM_PROJECTION_DISTANCE; 
00412         }
00413 
00414         ScaleOverZ = Camera->Scale / Z;
00415 
00416         ProjectedPoint->Z = Z*Camera->ZScale;   
00417 
00418         X = ( PointInCameraSpace->X * ScaleOverZ ) + Camera->XCenter;
00419         
00420         if (X < Camera->Left)
00421                 X = Camera->Left;
00422         else if (X > Camera->Right)     
00423                 X = Camera->Right;
00424 
00425         ProjectedPoint->X = X;
00426         
00427         Y = Camera->YCenter - ( PointInCameraSpace->Y * ScaleOverZ );
00428 
00429         if (Y < Camera->Top)
00430                 Y = Camera->Top;
00431         else if (Y > Camera->Bottom) 
00432                 Y = Camera->Bottom;
00433         
00434         ProjectedPoint->Y = Y;
00435 }

GENESISAPI void GENESISCC geCamera_ProjectZ (  const geCamera *  Camera,
const geVec3d *  PointInCameraSpace,
geVec3d *  ProjectedPoint
) 
 

Definition at line 355 of file Camera.c.

References CAMERA_MINIMUM_PROJECTION_DISTANCE, geFloat, GENESISAPI, GENESISCC, NULL, OneOverZ, geCamera::Scale, geVec3d::X, geCamera::XCenter, geVec3d::Y, geCamera::YCenter, Z, and geVec3d::Z.

Referenced by geBodyInst_GetGeometry(). 

00362 {
00363         geFloat OneOverZ;
00364         geFloat ScaleOverZ;
00365         geFloat Z;
00366         assert( Camera != NULL );
00367         assert( PointInCameraSpace != NULL );
00368         assert( ProjectedPoint != NULL );
00369 
00370         Z = -PointInCameraSpace->Z;   
00371 
00372         if (Z < CAMERA_MINIMUM_PROJECTION_DISTANCE)
00373                 {
00374                         Z = CAMERA_MINIMUM_PROJECTION_DISTANCE; 
00375                 }
00376 
00377         OneOverZ = 1.0f / Z;
00378         ScaleOverZ = Camera->Scale *  (OneOverZ);
00379 
00380         ProjectedPoint->Z = OneOverZ;   
00381 
00382         ProjectedPoint->X = ( PointInCameraSpace->X * ScaleOverZ ) + Camera->XCenter;
00383         
00384         ProjectedPoint->Y = Camera->YCenter - ( PointInCameraSpace->Y * ScaleOverZ );
00385 }

GENESISAPI void GENESISCC geCamera_ScreenPointToWorld (  const geCamera *  Camera,
int32  ScreenX,
int32  ScreenY,
geVec3d *  Vector
) 
 

Definition at line 285 of file Camera.c.

References geFloat, GENESISAPI, GENESISCC, geVec3d_Add(), geVec3d_Copy(), geVec3d_Normalize(), geVec3d_Scale(), geXForm3d_GetIn(), geXForm3d_GetLeft(), geXForm3d_GetUp(), geCamera::Scale, geCamera::TransposeXForm, geCamera::XCenter, and geCamera::YCenter. 

00291 {
00292         geVec3d In,Left,Up;
00293         geVec3d ScaledIn,ScaledLeft,ScaledUp ;
00294         geFloat XCenter ;
00295         geFloat YCenter ;
00296         geFloat Scale ;
00297         const geXForm3d *pM;
00298 
00299         pM = &(Camera->TransposeXForm);
00300         XCenter = Camera->XCenter ;
00301         YCenter = Camera->YCenter ;
00302         Scale   = Camera->Scale ;
00303 
00304         geXForm3d_GetIn( pM, &In ) ;
00305         geXForm3d_GetLeft( pM, &Left ) ;
00306         geXForm3d_GetUp( pM, &Up ) ;
00307         
00308         geVec3d_Scale(&In,   Scale, &ScaledIn);
00309         geVec3d_Scale(&Left, XCenter - ((geFloat)ScreenX), &ScaledLeft );
00310         geVec3d_Scale(&Up,   YCenter - ((geFloat)ScreenY), &ScaledUp   );
00311 
00312         geVec3d_Copy(&ScaledIn, Vector);
00313         geVec3d_Add(Vector,             &ScaledLeft,    Vector );
00314         geVec3d_Add(Vector,             &ScaledUp,              Vector );
00315         geVec3d_Normalize(Vector);
00316 }

GENESISAPI void GENESISCC geCamera_SetAttributes (  geCamera *  Camera,
geFloat  Fov,
const geRect *  Rect
) 
 

Definition at line 195 of file Camera.c.

References GE_Rect::Bottom, geCamera::Bottom, geCamera::CosViewAngleX, geCamera::CosViewAngleY, geCamera::Fov, geFloat, GENESISAPI, GENESISCC, geCamera::Height, GE_Rect::Left, geCamera::Left, max, NULL, GE_Rect::Right, geCamera::Right, geCamera::Scale, geCamera::SinViewAngleX, geCamera::SinViewAngleY, GE_Rect::Top, geCamera::Top, geCamera::Width, geCamera::XCenter, geCamera::XRatio, geCamera::YCenter, and geCamera::YRatio.

Referenced by geCamera_Create(), and SetupCamera(). 

00196 {
00197 
00198 #define TOO_SMALL (0.0001f)             // width and Fov must be >= TOO_SMALL
00199 
00200         geFloat Width, Height;
00201         geFloat OneOverFov;
00202 
00203         assert (Camera != NULL);
00204         assert (Rect != NULL);
00205         assert (! ((Fov < TOO_SMALL) && (Fov > -TOO_SMALL)));
00206 
00207         Width  = (geFloat)(Rect->Right - Rect->Left)+1.0f;
00208         Height = (geFloat)(Rect->Bottom - Rect->Top)+1.0f;
00209 
00210         assert( Width > 0.0f  );
00211         assert( Height > 0.0f );
00212 
00213         Camera->Width   = Width;
00214         Camera->Height  = Height;
00215         
00216         Camera->Fov             = Fov;
00217         
00218         if ((Camera->Fov < TOO_SMALL) && (Camera->Fov > -TOO_SMALL))
00219                 Camera->Fov = TOO_SMALL;                // Just in case
00220 
00221         OneOverFov  = 1.0f/Fov;
00222 
00223         if (Width <=0.0f)
00224                 Width = TOO_SMALL;                              // Just in case
00225         if (Height <=0.0f)
00226                 Height = TOO_SMALL;                             // Just in case
00227 
00228         Camera->XRatio  = Width  * OneOverFov;
00229         Camera->YRatio  = Height * OneOverFov;
00230         
00231         Camera->Scale   = max(Camera->XRatio, Camera->YRatio);
00232         //Camera->YScale = Camera->XScale;
00233 
00234         Camera->Left    = (geFloat)Rect->Left;
00235         Camera->Right   = (geFloat)Rect->Right;
00236         Camera->Top     = (geFloat)Rect->Top;
00237         Camera->Bottom  = (geFloat)Rect->Bottom;
00238 
00239         Camera->XCenter = Camera->Left + ( Width  * 0.5f ) - 0.5f;
00240         Camera->YCenter = Camera->Top  + ( Height * 0.5f ) - 0.5f;
00241 
00242         {
00243                 geFloat Numerator = 2.0f * OneOverFov * Camera->Scale;
00244                 double Angle;
00245                 Angle =  atan(Numerator / Camera->XRatio);
00246                 Camera->CosViewAngleX = (geFloat)cos(Angle);
00247                 Camera->SinViewAngleX = (geFloat)sin(Angle);
00248 
00249                 Angle =  atan(Numerator / Camera->YRatio);
00250                 Camera->CosViewAngleY = (geFloat)cos(Angle);
00251                 Camera->SinViewAngleY = (geFloat)sin(Angle);
00252         }
00253 }

GENESISAPI void GENESISCC geCamera_SetFarClipPlane (  geCamera *  Camera,
geBoolean  Enable,
geFloat  ZFar
) 
 

Definition at line 137 of file Camera.c.

References GENESISAPI, GENESISCC, geCamera::ZFar, and geCamera::ZFarEnable. 

00138 {
00139         assert(Camera);
00140 
00141         Camera->ZFarEnable = Enable;
00142         Camera->ZFar = ZFar;
00143 }

GENESISAPI geBoolean GENESISCC geCamera_SetWorldSpaceVisXForm (  geCamera *  Camera,
const geXForm3d *  XForm
) 
 

Definition at line 618 of file Camera.c.

References GE_FALSE, GE_TRUE, geBoolean, GENESISAPI, GENESISCC, geXForm3d_GetTranspose(), NULL, geXForm3d::Translation, geCamera::TransposeVisXForm, geCamera::UseVisPov, geCamera::VisPov, and geCamera::VisXForm. 

00619 {
00620         assert(Camera != NULL);
00621                 
00622         if (XForm)
00623         {
00624                 Camera->TransposeVisXForm = *XForm;             // Make a copy of the original XForm
00625                 Camera->VisPov = XForm->Translation;
00626                 geXForm3d_GetTranspose(XForm, &Camera->VisXForm);
00627 
00628                 Camera->UseVisPov = GE_TRUE;
00629         }
00630         else
00631         {
00632                 Camera->UseVisPov = GE_FALSE;
00633         }
00634 
00635         return GE_TRUE;
00636 }

GENESISAPI geBoolean GENESISCC geCamera_SetWorldSpaceXForm (  geCamera *  Camera,
const geXForm3d *  XForm
) 
 

Definition at line 599 of file Camera.c.

References GE_TRUE, geBoolean, GENESISAPI, GENESISCC, geXForm3d_GetTranspose(), NULL, geCamera::Pov, geXForm3d::Translation, geCamera::TransposeXForm, and geCamera::XForm.

Referenced by DoSplashScreen(), RenderFace(), RenderSubModels(), RenderWorldModel(), SetupCamera(), and SetupSkyForScene(). 

00600 {
00601         assert(Camera != NULL);
00602         assert(XForm != NULL);
00603 
00604         Camera->TransposeXForm = *XForm;                // Make a copy of the model XForm
00605         
00606         // Convert the model transform into a camera xform...
00607         //geCamera_ConvertModelToCamera(XForm, &Camera->XForm);
00608         geXForm3d_GetTranspose(XForm, &Camera->XForm);
00609 
00610         Camera->Pov = XForm->Translation;
00611 
00612         return GE_TRUE;
00613 }

GENESISAPI void GENESISCC geCamera_SetZScale (  geCamera *  Camera,
geFloat  ZScale
) 
 

Definition at line 119 of file Camera.c.

References GENESISAPI, GENESISCC, and geCamera::ZScale.

Referenced by GameMgr_SetDriverAndMode(). 

00120 {
00121         assert(Camera);
00122         Camera->ZScale = ZScale;
00123 }

GENESISAPI void GENESISCC geCamera_Transform (  const geCamera *  Camera,
const geVec3d *  WorldSpacePoint,
geVec3d *  CameraSpacePoint
) 
 

Definition at line 465 of file Camera.c.

References GENESISAPI, GENESISCC, geXForm3d_Transform(), and geCamera::XForm.

Referenced by gePuppet_DrawShadow(), gePuppet_RenderThroughFrustum(), RenderGouraudPoly(), RenderTexturedPoint(), RenderTexturedPoly(), and User_RenderPolyList(). 

00468 {
00469         assert( Camera );
00470         assert( WorldSpacePoint );
00471         assert( CameraSpacePoint );
00472 
00473         // Would be better if xform3d_transform was assembly, or a macro, or anything
00474         geXForm3d_Transform(&(Camera->XForm),WorldSpacePoint,CameraSpacePoint);
00475 }

GENESISAPI void GENESISCC geCamera_TransformAndProject (  const geCamera *  Camera,
const geVec3d *  Point,
geVec3d *  ProjectedPoint
) 
 

Definition at line 531 of file Camera.c.

References CAMERA_MINIMUM_PROJECTION_DISTANCE, geFloat, GENESISAPI, GENESISCC, geXForm3d_Transform(), max, geCamera::Scale, geVec3d::X, geCamera::XCenter, geCamera::XForm, geVec3d::Y, geCamera::YCenter, Z, geVec3d::Z, and geCamera::ZScale.

Referenced by geCamera_TransformAndProjectArray(). 

00537 {
00538         geFloat Z;
00539 
00540         assert( Camera );
00541         assert( Point );
00542         assert( ProjectedPoint );
00543 
00544         geXForm3d_Transform(&(Camera->XForm),Point,ProjectedPoint);
00545 
00546         Z = - ProjectedPoint->Z;
00547 
00548         Z = max(Z,CAMERA_MINIMUM_PROJECTION_DISTANCE);
00549 
00550         ProjectedPoint->Z = Z*Camera->ZScale;
00551 
00552         Z = Camera->Scale / Z;
00553 
00554         ProjectedPoint->X =   ( ProjectedPoint->X * Z ) + Camera->XCenter;
00555         ProjectedPoint->Y = - ( ProjectedPoint->Y * Z ) + Camera->YCenter;
00556 }

GENESISAPI void GENESISCC geCamera_TransformAndProjectArray (  const geCamera *  Camera,
const geVec3d *  WorldSpacePointPtr,
geVec3d *  ProjectedSpacePointPtr,
int  count
) 
 

Definition at line 498 of file Camera.c.

References count, geCamera_TransformAndProject(), GENESISAPI, and GENESISCC. 

00502 {
00503         assert( Camera );
00504         assert( WorldSpacePointPtr );
00505         assert( ProjectedSpacePointPtr );
00506         while(count--)
00507         {
00508                 geCamera_TransformAndProject(Camera,WorldSpacePointPtr++,ProjectedSpacePointPtr++);
00509         }
00510 }

GENESISAPI void GENESISCC geCamera_TransformAndProjectL (  const geCamera *  Camera,
const GE_LVertex *  Point,
GE_TLVertex *  ProjectedPoint
) 
 

Definition at line 562 of file Camera.c.

References GE_TLVertex::a, GE_TLVertex::b, CAMERA_MINIMUM_PROJECTION_DISTANCE, GE_TLVertex::g, geFloat, GENESISAPI, GENESISCC, geXForm3d_Transform(), max, GE_TLVertex::r, geCamera::Scale, GE_TLVertex::u, GE_TLVertex::v, GE_TLVertex::x, geCamera::XCenter, geCamera::XForm, GE_TLVertex::y, geCamera::YCenter, Z, GE_TLVertex::z, and geCamera::ZScale.

Referenced by geCamera_TransformAndProjectLArray(). 

00568 {
00569         geFloat ScaleOverZ;
00570         geFloat Z;
00571 
00572         assert( Camera );
00573         assert( Point );
00574         assert( ProjectedPoint );
00575 
00576         geXForm3d_Transform(&(Camera->XForm),(geVec3d *)Point,(geVec3d *)ProjectedPoint);
00577 
00578         Z = - ProjectedPoint->z;
00579 
00580         Z = max(Z,CAMERA_MINIMUM_PROJECTION_DISTANCE);
00581 
00582         ScaleOverZ = Camera->Scale / Z;
00583 
00584         ProjectedPoint->z = Z*Camera->ZScale;
00585         ProjectedPoint->x =   ( ProjectedPoint->x * ScaleOverZ ) + Camera->XCenter;
00586         ProjectedPoint->y = - ( ProjectedPoint->y * ScaleOverZ ) + Camera->YCenter;
00587 
00588         ProjectedPoint->u = Point->u;
00589         ProjectedPoint->v = Point->v;
00590         ProjectedPoint->r = Point->r;
00591         ProjectedPoint->g = Point->g;
00592         ProjectedPoint->b = Point->b;
00593         ProjectedPoint->a = Point->a;
00594 }

GENESISAPI void GENESISCC geCamera_TransformAndProjectLArray (  const geCamera *  Camera,
const GE_LVertex *  WorldSpacePointPtr,
GE_TLVertex *  ProjectedSpacePointPtr,
int  count
) 
 

Definition at line 515 of file Camera.c.

References count, geCamera_TransformAndProjectL(), GENESISAPI, and GENESISCC. 

00518 {
00519         assert( Camera );
00520         assert( WorldSpacePointPtr );
00521         assert( ProjectedSpacePointPtr );
00522         while(count--)
00523         {
00524                 geCamera_TransformAndProjectL(Camera,WorldSpacePointPtr++,ProjectedSpacePointPtr++);
00525         }
00526 }

GENESISAPI void GENESISCC geCamera_TransformArray (  const geCamera *  Camera,
const geVec3d *  WorldSpacePointPtr,
geVec3d *  CameraSpacePointPtr,
int  count
) 
 

Definition at line 481 of file Camera.c.

References count, GENESISAPI, GENESISCC, geXForm3d_Transform(), and geCamera::XForm.

Referenced by geSprite_CreateFrustumClippedScreenPoly(). 

00484 {
00485         assert( Camera );
00486         assert( WorldSpacePointPtr );
00487         assert( CameraSpacePointPtr );
00488         // use transformarray!!
00489         while(count--)
00490         {
00491                 geXForm3d_Transform(&(Camera->XForm),WorldSpacePointPtr++,CameraSpacePointPtr++);
00492         }
00493 }

Generated on Tue Sep 30 12:37:11 2003 for GTestAndEngine by doxygen 1.3.2