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support for camera shift with UV camera project.

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This commit is contained in:
Campbell Barton
2010-02-15 12:50:10 +00:00
parent 37858fd435
commit c864df6cfe
1 changed files with 51 additions and 36 deletions
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87
source/blender/editors/uvedit/uvedit_unwrap_ops.c
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@@ -881,7 +881,18 @@ static void uv_from_view_bounds(float target[2], float source[3], float rotmat[4
target[1] = pv[2];
}
static void uv_from_camera(float camsize, float camangle, float xasp, float yasp, float target[2], float source[3], float rotmat[4][4], float cammat[4][4], int persp, int pano)
typedef struct UvCameraInfo {
float camangle;
float camsize;
float xasp, yasp;
float shiftx, shifty;
float rotmat[4][4];
float caminv[4][4];
short do_persp, do_pano;
} UvCameraInfo;
//static void uv_from_camera(float camsize, float camangle, float xasp, float yasp, float target[2], float source[3], float rotmat[4][4], float caminv[4][4], int persp, int pano)
static void uv_from_camera(UvCameraInfo *uci, float target[2], float source[3])
{
float pv4[4];
@@ -889,37 +900,39 @@ static void uv_from_camera(float camsize, float camangle, float xasp, float yasp
pv4[3]= 1.0;
/* rotmat is the object matrix in this case */
mul_m4_v4(rotmat, pv4);
mul_m4_v4(uci->rotmat, pv4);
/* cammat is the inverse camera matrix */
mul_m4_v4(cammat, pv4);
/* caminv is the inverse camera matrix */
mul_m4_v4(uci->caminv, pv4);
if(pano) {
if(uci->do_pano) {
float angle= atan2f(pv4[0], -pv4[2]) / (M_PI * 2.0); /* angle around the camera */
if (persp & CAM_ORTHO) {
if (uci->do_persp==0) {
target[0] = angle; /* no correct method here, just map to 0-1 */
target[1] = pv4[1] / camsize;
target[1] = pv4[1] / uci->camsize;
}
else {
float vec2d[2]= {pv4[0], pv4[2]}; /* 2D position from the camera */
target[0] = angle * (M_PI / camangle);
target[1] = pv4[1] / (len_v2(vec2d) * camsize);
target[0] = angle * (M_PI / uci->camangle);
target[1] = pv4[1] / (len_v2(vec2d) * uci->camsize);
}
target[0]+= 0.5f; /* aspect is ignored for now */
target[1]+= 0.5f;
}
else {
if (pv4[2]==0.0f) pv4[2]=0.00001f; /* don't allow div by 0 */
if (persp & CAM_ORTHO) {
target[0]=((pv4[0]/camsize)*xasp)+0.5f;
target[1]=((pv4[1]/camsize)*yasp)+0.5f;
if (uci->do_persp==0) {
target[0]=(pv4[0]/uci->camsize) * uci->xasp;
target[1]=(pv4[1]/uci->camsize) * uci->yasp;
}
else {
target[0]=((-pv4[0]*((1.0f/camsize)/pv4[2])*xasp)/2)+0.5;
target[1]=((-pv4[1]*((1.0f/camsize)/pv4[2])*yasp)/2)+0.5;
target[0]=(-pv4[0]*((1.0f/uci->camsize)/pv4[2])*uci->xasp) / 2.0f;
target[1]=(-pv4[1]*((1.0f/uci->camsize)/pv4[2])*uci->yasp) / 2.0f;
}
}
/* adds camera shift + 0.5 */
target[0] += uci->shiftx;
target[1] += uci->shifty;
}
static void uv_from_view(ARegion *ar, float target[2], float source[3], float rotmat[4][4])
@@ -975,8 +988,7 @@ static int from_view_exec(bContext *C, wmOperator *op)
RegionView3D *rv3d= ar->regiondata;
EditFace *efa;
MTFace *tf;
float invmat[4][4],rotmat[4][4];
float xasp, yasp, camsize, camangle;
float rotmat[4][4];
/* add uvs if they don't exist yet */
if(!ED_uvedit_ensure_uvs(C, scene, obedit)) {
@@ -1005,39 +1017,42 @@ static int from_view_exec(bContext *C, wmOperator *op)
}
}
else if (camera) {
int pano = camera->flag & CAM_PANORAMA;
camangle= DEG2RAD(camera->angle)/2.0f;
UvCameraInfo uci;
if (camera->type==CAM_PERSP) {
camsize= tanf(camangle); /* calcs ez as distance from camera plane to viewer */
}
else {
camsize=camera->ortho_scale;
}
uci.do_pano = (camera->flag & CAM_PANORAMA);
uci.do_persp = (camera->type==CAM_PERSP);
uci.camangle= DEG2RAD(camera->angle)/2.0f;
uci.camsize= uci.do_persp ? uci.camsize= tanf(uci.camangle) : camera->ortho_scale;
if (invert_m4_m4(uci.caminv, v3d->camera->obmat)) {
if (invert_m4_m4(invmat, v3d->camera->obmat)) {
/* normal projection */
copy_m4_m4(rotmat, obedit->obmat);
copy_m4_m4(uci.rotmat, obedit->obmat);
/* also make aspect ratio adjustment factors */
if (scene->r.xsch > scene->r.ysch) {
xasp=1;
yasp=(float)(scene->r.xsch)/(float)(scene->r.ysch);
uci.xasp= 1.0f;
uci.yasp= (float)(scene->r.xsch)/(float)(scene->r.ysch);
}
else {
xasp=(float)(scene->r.ysch)/(float)(scene->r.xsch);
yasp=1;
uci.xasp= (float)(scene->r.ysch)/(float)(scene->r.xsch);
uci.yasp= 1.0f;
}
/* include 0.5f here to move the UVs into the center */
uci.shiftx = 0.5f - camera->shiftx;
uci.shifty = 0.5f - camera->shifty;
for(efa= em->faces.first; efa; efa= efa->next) {
if(efa->f & SELECT) {
tf= CustomData_em_get(&em->fdata, efa->data, CD_MTFACE);
uv_from_camera(camsize, camangle, xasp, yasp, tf->uv[0], efa->v1->co, rotmat, invmat, camera->type, pano);
uv_from_camera(camsize, camangle, xasp, yasp, tf->uv[1], efa->v2->co, rotmat, invmat, camera->type, pano);
uv_from_camera(camsize, camangle, xasp, yasp, tf->uv[2], efa->v3->co, rotmat, invmat, camera->type, pano);
uv_from_camera(&uci, tf->uv[0], efa->v1->co);
uv_from_camera(&uci, tf->uv[1], efa->v2->co);
uv_from_camera(&uci, tf->uv[2], efa->v3->co);
if(efa->v4)
uv_from_camera(camsize, camangle, xasp, yasp, tf->uv[3], efa->v4->co, rotmat, invmat, camera->type, pano);
uv_from_camera(&uci, tf->uv[3], efa->v4->co);
}
}
}