diff options
author | Campbell Barton <ideasman42@gmail.com> | 2010-03-05 17:06:39 +0300 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2010-03-05 17:06:39 +0300 |
commit | f4298de8aaafd36cb8da6f7051c24ca630589001 (patch) | |
tree | 8f5f0b2b6879bbb956ab4224ec51a7bf5b8d9e35 /source/blender/blenkernel | |
parent | 19154014b8a87f1f63f5d75d6983adc5fa6dbc7f (diff) |
utility function object_camera_matrix, moved code from RE_SetCamera into this.
use for getting the render matrix of a camera (view plane, winmat, clipstart/end) without rendering.
Diffstat (limited to 'source/blender/blenkernel')
-rw-r--r-- | source/blender/blenkernel/BKE_object.h | 5 | ||||
-rw-r--r-- | source/blender/blenkernel/intern/object.c | 109 |
2 files changed, 114 insertions, 0 deletions
diff --git a/source/blender/blenkernel/BKE_object.h b/source/blender/blenkernel/BKE_object.h index a6a641a3219..1362a191919 100644 --- a/source/blender/blenkernel/BKE_object.h +++ b/source/blender/blenkernel/BKE_object.h @@ -45,6 +45,7 @@ struct SoftBody; struct BulletSoftBody; struct Group; struct bAction; +struct RenderData; void clear_workob(struct Object *workob); void what_does_parent(struct Scene *scene, struct Object *ob, struct Object *workob); @@ -128,6 +129,10 @@ int object_insert_ptcache(struct Object *ob); // void object_delete_ptcache(struct Object *ob, int index); struct KeyBlock *object_insert_shape_key(struct Scene *scene, struct Object *ob, char *name, int from_mix); +void object_camera_matrix( + struct RenderData *rd, struct Object *camera, int winx, int winy, short field_second, + float winmat[][4], struct rctf *viewplane, float *clipsta, float *clipend, float *lens, float *ycor, + float *viewdx, float *viewdy); #ifdef __cplusplus } diff --git a/source/blender/blenkernel/intern/object.c b/source/blender/blenkernel/intern/object.c index 46c26524f47..2d7fc08aa74 100644 --- a/source/blender/blenkernel/intern/object.c +++ b/source/blender/blenkernel/intern/object.c @@ -2715,6 +2715,115 @@ int object_insert_ptcache(Object *ob) return i; } +/* 'lens' may be set for envmap only */ +void object_camera_matrix( + RenderData *rd, Object *camera, int winx, int winy, short field_second, + float winmat[][4], rctf *viewplane, float *clipsta, float *clipend, float *lens, float *ycor, + float *viewdx, float *viewdy +) { + Camera *cam=NULL; + float pixsize; + float shiftx=0.0, shifty=0.0, winside, viewfac; + + /* question mark */ + (*ycor)= rd->yasp / rd->xasp; + if(rd->mode & R_FIELDS) + (*ycor) *= 2.0f; + + if(camera->type==OB_CAMERA) { + cam= camera->data; + + if(cam->type==CAM_ORTHO) rd->mode |= R_ORTHO; + if(cam->flag & CAM_PANORAMA) rd->mode |= R_PANORAMA; + + /* solve this too... all time depending stuff is in convertblender.c? + * Need to update the camera early because it's used for projection matrices + * and other stuff BEFORE the animation update loop is done + * */ +#if 0 // XXX old animation system + if(cam->ipo) { + calc_ipo(cam->ipo, frame_to_float(re->scene, re->r.cfra)); + execute_ipo(&cam->id, cam->ipo); + } +#endif // XXX old animation system + shiftx=cam->shiftx; + shifty=cam->shifty; + (*lens)= cam->lens; + (*clipsta)= cam->clipsta; + (*clipend)= cam->clipend; + } + else if(camera->type==OB_LAMP) { + Lamp *la= camera->data; + float fac= cos( M_PI*la->spotsize/360.0 ); + float phi= acos(fac); + + (*lens)= 16.0*fac/sin(phi); + if((*lens)==0.0f) + (*lens)= 35.0; + (*clipsta)= la->clipsta; + (*clipend)= la->clipend; + } + else { /* envmap exception... */; + if((*lens)==0.0f) + (*lens)= 16.0; + + if((*clipsta)==0.0f || (*clipend)==0.0f) { + (*clipsta)= 0.1f; + (*clipend)= 1000.0f; + } + } + + /* ortho only with camera available */ + if(cam && rd->mode & R_ORTHO) { + if(rd->xasp*winx >= rd->yasp*winy) { + viewfac= winx; + } + else { + viewfac= (*ycor) * winy; + } + /* ortho_scale == 1.0 means exact 1 to 1 mapping */ + pixsize= cam->ortho_scale/viewfac; + } + else { + if(rd->xasp*winx >= rd->yasp*winy) viewfac= (winx*(*lens))/32.0; + else viewfac= (*ycor) * (winy*(*lens))/32.0; + pixsize= (*clipsta) / viewfac; + } + + /* viewplane fully centered, zbuffer fills in jittered between -.5 and +.5 */ + winside= MAX2(winx, winy); + viewplane->xmin= -0.5f*(float)winx + shiftx*winside; + viewplane->ymin= -0.5f*(*ycor)*(float)winy + shifty*winside; + viewplane->xmax= 0.5f*(float)winx + shiftx*winside; + viewplane->ymax= 0.5f*(*ycor)*(float)winy + shifty*winside; + + if(field_second) { + if(rd->mode & R_ODDFIELD) { + viewplane->ymin-= .5 * (*ycor); + viewplane->ymax-= .5 * (*ycor); + } + else { + viewplane->ymin+= .5* (*ycor); + viewplane->ymax+= .5* (*ycor); + } + } + /* the window matrix is used for clipping, and not changed during OSA steps */ + /* using an offset of +0.5 here would give clip errors on edges */ + viewplane->xmin= pixsize*(viewplane->xmin); + viewplane->xmax= pixsize*(viewplane->xmax); + viewplane->ymin= pixsize*(viewplane->ymin); + viewplane->ymax= pixsize*(viewplane->ymax); + + (*viewdx)= pixsize; + (*viewdy)= (*ycor) * pixsize; + + if(rd->mode & R_ORTHO) + orthographic_m4(winmat, viewplane->xmin, viewplane->xmax, viewplane->ymin, viewplane->ymax, *clipsta, *clipend); + else + perspective_m4(winmat, viewplane->xmin, viewplane->xmax, viewplane->ymin, viewplane->ymax, *clipsta, *clipend); + +} + #if 0 static int pc_findindex(ListBase *listbase, int index) { |