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And now the studio is rendering panoramas... finding out that vectorblur

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also could use correction for it.
The current perspective projected blur would look in 180 degree view like
this:

http://www.blender.org/bf/p2.jpg
(circle of planes rotating around camera)

After some fight with my rusty highschool gonio I got it fixed; nice
cylindrical projected speedvectors:

http://www.blender.org/bf/p1.jpg
This commit is contained in:
Ton Roosendaal
2006-03-11 21:46:19 +00:00
parent 58daa8a370
commit bad09bd2f9
2 changed files with 62 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

77
source/blender/render/intern/source/convertblender.c
View File

@@ -2149,7 +2149,7 @@ static int dl_surf_to_renderdata(Render *re, Object *ob, DispList *dl, Material
VertRen *v1, *v2, *v3, *v4, *ver;
VlakRen *vlr, *vlr1, *vlr2, *vlr3;
Curve *cu= ob->data;
float *data, n1[3], *orcobase= orco, flen;
float *data, n1[3], flen;
int u, v, orcoret= 0;
int p1, p2, p3, p4, a;
int sizeu, nsizeu, sizev, nsizev;
@@ -3239,11 +3239,63 @@ static void database_fromscene_vectors(Render *re, Scene *scene, int timeoffset)
G.scene->r.cfra-=timeoffset;
}
/* choose to use static, to prevent giving too many args to this call */
static void speedvector_project(Render *re, float *zco, VertRen *ver)
{
static float pixelphix=0.0f, pixelphiy=0.0f, zmulx=0.0f, zmuly=0.0f;
static int pano= 0;
float div;
/* initialize */
if(re) {
pano= re->r.mode & R_PANORAMA;
/* precalculate amount of radians 1 pixel rotates */
if(pano) {
/* size of 1 pixel mapped to viewplane coords */
float psize= (re->viewplane.xmax-re->viewplane.xmin)/(float)re->winx;
/* x angle of a pixel */
pixelphix= atan(psize/re->clipsta);
psize= (re->viewplane.ymax-re->viewplane.ymin)/(float)re->winy;
/* y angle of a pixel */
pixelphiy= atan(psize/re->clipsta);
}
zmulx= re->winx/2;
zmuly= re->winy/2;
return;
}
/* now map hocos to screenspace, uses very primitive clip still */
if(ver->ho[3]<0.1f) div= 10.0f;
else div= 1.0f/ver->ho[3];
/* use cylinder projection */
if(pano) {
float vec[3], ang;
/* angle between (0,0,-1) and (ver->co) */
VECCOPY(vec, ver->co);
ang= saacos(-vec[2]/sqrt(vec[0]*vec[0] + vec[2]*vec[2]));
if(vec[0]<0.0f) ang= -ang;
zco[0]= ang/pixelphix + zmulx;
ang= 0.5f*M_PI - saacos(vec[1]/sqrt(vec[0]*vec[0] + vec[1]*vec[1] + vec[2]*vec[2]));
zco[1]= ang/pixelphiy + zmuly;
}
else {
zco[0]= zmulx*(1.0f+ver->ho[0]*div);
zco[1]= zmuly*(1.0f+ver->ho[1]*div);
}
}
static void calculate_speedvectors(Render *re, float *vectors, int startvert, int endvert, int step)
{
VertRen *ver= NULL;
float *speed, div, zco[2];
float zmulx= re->winx/2, zmuly= re->winy/2, len;
float *speed, zco[2];
float len;
float winsq= re->winx*re->winy, winroot= sqrt(winsq);
int a;
@@ -3257,11 +3309,7 @@ static void calculate_speedvectors(Render *re, float *vectors, int startvert, in
else
ver++;
/* now map hocos to screenspace, uses very primitive clip still */
if(ver->ho[3]<0.1f) div= 10.0f;
else div= 1.0f/ver->ho[3];
zco[0]= zmulx*(1.0f+ver->ho[0]*div);
zco[1]= zmuly*(1.0f+ver->ho[1]*div);
speedvector_project(NULL, zco, ver);
zco[0]= vectors[0] - zco[0];
zco[1]= vectors[1] - zco[1];
@@ -3373,8 +3421,7 @@ static void copy_dbase_object_vectors(Render *re, ListBase *lb)
{
ObjectRen *obren, *obrenlb;
VertRen *ver;
float zmulx= re->winx/2, zmuly= re->winy/2;
float div, *vec;
float *vec;
int a;
for(obren= re->objecttable.first; obren; obren= obren->next) {
@@ -3393,11 +3440,7 @@ static void copy_dbase_object_vectors(Render *re, ListBase *lb)
else
ver++;
if(ver->ho[3]<0.1f) div= 10.0f;
else div= 1.0f/ver->ho[3];
vec[0]= zmulx*(1.0f+ver->ho[0]*div);
vec[1]= zmuly*(1.0f+ver->ho[1]*div);
speedvector_project(NULL, vec, ver);
}
}
}
@@ -3422,7 +3465,9 @@ void RE_Database_FromScene_Vectors(Render *re, Scene *sce)
re->i.infostr= "Calculating previous vectors";
re->r.mode |= R_SPEED;
speedvector_project(re, NULL, NULL); /* initializes projection code */
/* creates entire dbase */
database_fromscene_vectors(re, sce, -1);

2
source/blender/render/intern/source/pipeline.c
View File

@@ -935,7 +935,7 @@ static void render_tile_processor(Render *re, int firsttile)
/* calculus for how much 1 pixel rendered should rotate the 3d geometry */
/* is not that simple, needs to be corrected for errors of larger viewplane sizes */
/* called in initrender.c, initparts() */
/* called in initrender.c, initparts() and convertblender.c, for speedvectors */
float panorama_pixel_rot(Render *re)
{
float psize, phi, xfac;