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Diffstat (limited to 'source/blender/blenkernel/intern/camera.c')
| -rw-r--r-- | source/blender/blenkernel/intern/camera.c | 396 |
1 files changed, 396 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/camera.c b/source/blender/blenkernel/intern/camera.c new file mode 100644 index 00000000000..145eb9363e9 --- /dev/null +++ b/source/blender/blenkernel/intern/camera.c @@ -0,0 +1,396 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/blenkernel/intern/camera.c + * \ingroup bke + */ + +#include <stdlib.h> + +#include "DNA_camera_types.h" +#include "DNA_lamp_types.h" +#include "DNA_object_types.h" +#include "DNA_scene_types.h" + +#include "BLI_math.h" +#include "BLI_utildefines.h" + +#include "BKE_animsys.h" +#include "BKE_camera.h" +#include "BKE_global.h" +#include "BKE_library.h" +#include "BKE_main.h" + +void *add_camera(const char *name) +{ + Camera *cam; + + cam= alloc_libblock(&G.main->camera, ID_CA, name); + + cam->lens= 35.0f; + cam->sensor_x= 32.0f; + cam->sensor_y= 18.0f; + cam->clipsta= 0.1f; + cam->clipend= 100.0f; + cam->drawsize= 0.5f; + cam->ortho_scale= 6.0; + cam->flag |= CAM_SHOWPASSEPARTOUT; + cam->passepartalpha = 0.5f; + + return cam; +} + +Camera *copy_camera(Camera *cam) +{ + Camera *camn; + + camn= copy_libblock(&cam->id); + + return camn; +} + +void make_local_camera(Camera *cam) +{ + Main *bmain= G.main; + Object *ob; + int is_local= FALSE, is_lib= FALSE; + + /* - only lib users: do nothing + * - only local users: set flag + * - mixed: make copy + */ + + if(cam->id.lib==NULL) return; + if(cam->id.us==1) { + id_clear_lib_data(bmain, &cam->id); + return; + } + + for(ob= bmain->object.first; ob && ELEM(0, is_lib, is_local); ob= ob->id.next) { + if(ob->data==cam) { + if(ob->id.lib) is_lib= TRUE; + else is_local= TRUE; + } + } + + if(is_local && is_lib == FALSE) { + id_clear_lib_data(bmain, &cam->id); + } + else if(is_local && is_lib) { + Camera *camn= copy_camera(cam); + + camn->id.us= 0; + + /* Remap paths of new ID using old library as base. */ + BKE_id_lib_local_paths(bmain, &camn->id); + + for(ob= bmain->object.first; ob; ob= ob->id.next) { + if(ob->data == cam) { + if(ob->id.lib==NULL) { + ob->data= camn; + camn->id.us++; + cam->id.us--; + } + } + } + } +} + +/* get the camera's dof value, takes the dof object into account */ +float dof_camera(Object *ob) +{ + Camera *cam = (Camera *)ob->data; + if (ob->type != OB_CAMERA) + return 0.0f; + if (cam->dof_ob) { + /* too simple, better to return the distance on the view axis only + * return len_v3v3(ob->obmat[3], cam->dof_ob->obmat[3]); */ + float mat[4][4], imat[4][4], obmat[4][4]; + + copy_m4_m4(obmat, ob->obmat); + normalize_m4(obmat); + invert_m4_m4(imat, obmat); + mul_m4_m4m4(mat, cam->dof_ob->obmat, imat); + return (float)fabs(mat[3][2]); + } + return cam->YF_dofdist; +} + +void free_camera(Camera *ca) +{ + BKE_free_animdata((ID *)ca); +} + +void object_camera_mode(RenderData *rd, Object *camera) +{ + rd->mode &= ~(R_ORTHO|R_PANORAMA); + if(camera && camera->type==OB_CAMERA) { + Camera *cam= camera->data; + if(cam->type == CAM_ORTHO) rd->mode |= R_ORTHO; + if(cam->flag & CAM_PANORAMA) rd->mode |= R_PANORAMA; + } +} + +void object_camera_intrinsics(Object *camera, Camera **cam_r, short *is_ortho, float *shiftx, float *shifty, + float *clipsta, float *clipend, float *lens, float *sensor_x, float *sensor_y, short *sensor_fit) +{ + Camera *cam= NULL; + + (*shiftx)= 0.0f; + (*shifty)= 0.0f; + + (*sensor_x)= DEFAULT_SENSOR_WIDTH; + (*sensor_y)= DEFAULT_SENSOR_HEIGHT; + (*sensor_fit)= CAMERA_SENSOR_FIT_AUTO; + + if(camera->type==OB_CAMERA) { + cam= camera->data; + + if(cam->type == CAM_ORTHO) { + *is_ortho= TRUE; + } + + /* 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; + (*sensor_x)= cam->sensor_x; + (*sensor_y)= cam->sensor_y; + (*clipsta)= cam->clipsta; + (*clipend)= cam->clipend; + (*sensor_fit)= cam->sensor_fit; + } + else if(camera->type==OB_LAMP) { + Lamp *la= camera->data; + float fac= cosf((float)M_PI*la->spotsize/360.0f); + float phi= acos(fac); + + (*lens)= 16.0f*fac/sinf(phi); + if((*lens)==0.0f) + (*lens)= 35.0f; + (*clipsta)= la->clipsta; + (*clipend)= la->clipend; + } + else { /* envmap exception... */; + if((*lens)==0.0f) /* is this needed anymore? */ + (*lens)= 16.0f; + + if((*clipsta)==0.0f || (*clipend)==0.0f) { + (*clipsta)= 0.1f; + (*clipend)= 1000.0f; + } + } + + (*cam_r)= cam; +} + +/* '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 *sensor_x, float *sensor_y, short *sensor_fit, float *ycor, + float *viewdx, float *viewdy) +{ + Camera *cam=NULL; + float pixsize; + float shiftx=0.0, shifty=0.0, winside, viewfac; + short is_ortho= FALSE; + + /* question mark */ + (*ycor)= rd->yasp / rd->xasp; + if(rd->mode & R_FIELDS) + (*ycor) *= 2.0f; + + object_camera_intrinsics(camera, &cam, &is_ortho, &shiftx, &shifty, clipsta, clipend, lens, sensor_x, sensor_y, sensor_fit); + + /* ortho only with camera available */ + if(cam && is_ortho) { + if((*sensor_fit)==CAMERA_SENSOR_FIT_AUTO) { + if(rd->xasp*winx >= rd->yasp*winy) viewfac= winx; + else viewfac= (*ycor) * winy; + } + else if((*sensor_fit)==CAMERA_SENSOR_FIT_HOR) { + viewfac= winx; + } + else { /* if((*sensor_fit)==CAMERA_SENSOR_FIT_VERT) { */ + viewfac= (*ycor) * winy; + } + + /* ortho_scale == 1.0 means exact 1 to 1 mapping */ + pixsize= cam->ortho_scale/viewfac; + } + else { + if((*sensor_fit)==CAMERA_SENSOR_FIT_AUTO) { + if(rd->xasp*winx >= rd->yasp*winy) viewfac= ((*lens) * winx) / (*sensor_x); + else viewfac= (*ycor) * ((*lens) * winy) / (*sensor_x); + } + else if((*sensor_fit)==CAMERA_SENSOR_FIT_HOR) { + viewfac= ((*lens) * winx) / (*sensor_x); + } + else { /* if((*sensor_fit)==CAMERA_SENSOR_FIT_VERT) { */ + viewfac= ((*lens) * winy) / (*sensor_y); + } + + pixsize= (*clipsta) / viewfac; + } + + /* viewplane fully centered, zbuffer fills in jittered between -.5 and +.5 */ + winside= MAX2(winx, winy); + + if(cam) { + if(cam->sensor_fit==CAMERA_SENSOR_FIT_HOR) + winside= winx; + else if(cam->sensor_fit==CAMERA_SENSOR_FIT_VERT) + winside= 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-= 0.5f * (*ycor); + viewplane->ymax-= 0.5f * (*ycor); + } + else { + viewplane->ymin+= 0.5f * (*ycor); + viewplane->ymax+= 0.5f * (*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->xmax *= pixsize; + viewplane->ymin *= pixsize; + viewplane->ymax *= pixsize; + + (*viewdx)= pixsize; + (*viewdy)= (*ycor) * pixsize; + + if(is_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); + +} + +void camera_view_frame_ex(Scene *scene, Camera *camera, float drawsize, const short do_clip, const float scale[3], + float r_asp[2], float r_shift[2], float *r_drawsize, float r_vec[4][3]) +{ + float facx, facy; + float depth; + + /* aspect correcton */ + if (scene) { + float aspx= (float) scene->r.xsch*scene->r.xasp; + float aspy= (float) scene->r.ysch*scene->r.yasp; + + if(camera->sensor_fit==CAMERA_SENSOR_FIT_AUTO) { + if(aspx < aspy) { + r_asp[0]= aspx / aspy; + r_asp[1]= 1.0; + } + else { + r_asp[0]= 1.0; + r_asp[1]= aspy / aspx; + } + } + else if(camera->sensor_fit==CAMERA_SENSOR_FIT_AUTO) { + r_asp[0]= aspx / aspy; + r_asp[1]= 1.0; + } + else { + r_asp[0]= 1.0; + r_asp[1]= aspy / aspx; + } + } + else { + r_asp[0]= 1.0f; + r_asp[1]= 1.0f; + } + + if(camera->type==CAM_ORTHO) { + facx= 0.5f * camera->ortho_scale * r_asp[0] * scale[0]; + facy= 0.5f * camera->ortho_scale * r_asp[1] * scale[1]; + r_shift[0]= camera->shiftx * camera->ortho_scale * scale[0]; + r_shift[1]= camera->shifty * camera->ortho_scale * scale[1]; + depth= do_clip ? -((camera->clipsta * scale[2]) + 0.1f) : - drawsize * camera->ortho_scale * scale[2]; + + *r_drawsize= 0.5f * camera->ortho_scale; + } + else { + /* that way it's always visible - clipsta+0.1 */ + float fac; + float half_sensor= 0.5f*((camera->sensor_fit==CAMERA_SENSOR_FIT_VERT) ? (camera->sensor_y) : (camera->sensor_x)); + + *r_drawsize= drawsize / ((scale[0] + scale[1] + scale[2]) / 3.0f); + + if(do_clip) { + /* fixed depth, variable size (avoids exceeding clipping range) */ + depth = -(camera->clipsta + 0.1f); + fac = depth / (camera->lens/(-half_sensor) * scale[2]); + } + else { + /* fixed size, variable depth (stays a reasonable size in the 3D view) */ + depth= *r_drawsize * camera->lens/(-half_sensor) * scale[2]; + fac= *r_drawsize; + } + + facx= fac * r_asp[0] * scale[0]; + facy= fac * r_asp[1] * scale[1]; + r_shift[0]= camera->shiftx*fac*2 * scale[0]; + r_shift[1]= camera->shifty*fac*2 * scale[1]; + } + + r_vec[0][0]= r_shift[0] + facx; r_vec[0][1]= r_shift[1] + facy; r_vec[0][2]= depth; + r_vec[1][0]= r_shift[0] + facx; r_vec[1][1]= r_shift[1] - facy; r_vec[1][2]= depth; + r_vec[2][0]= r_shift[0] - facx; r_vec[2][1]= r_shift[1] - facy; r_vec[2][2]= depth; + r_vec[3][0]= r_shift[0] - facx; r_vec[3][1]= r_shift[1] + facy; r_vec[3][2]= depth; +} + +void camera_view_frame(Scene *scene, Camera *camera, float r_vec[4][3]) +{ + float dummy_asp[2]; + float dummy_shift[2]; + float dummy_drawsize; + const float dummy_scale[3]= {1.0f, 1.0f, 1.0f}; + + camera_view_frame_ex(scene, camera, FALSE, 1.0, dummy_scale, + dummy_asp, dummy_shift, &dummy_drawsize, r_vec); +} + |