diff options
| -rw-r--r-- | solar.c | 111 |
1 files changed, 99 insertions, 12 deletions
@@ -172,6 +172,92 @@ max(int a, int b) return a > b? a: b; } +static Point3 +minpt3(Point3 a, Point3 b) +{ + return (Point3){ + fmin(a.x, b.x), + fmin(a.y, b.y), + fmin(a.z, b.z), + fmin(a.w, b.w) + }; +} + +static Point3 +maxpt3(Point3 a, Point3 b) +{ + return (Point3){ + fmax(a.x, b.x), + fmax(a.y, b.y), + fmax(a.z, b.z), + fmax(a.w, b.w) + }; +} + +static void +selectplanet(Planet *p) +{ + static Planet *oldp; + struct { Point3 min, max; } aabb; + Entity *e, *esel; + Model *msel; + Primitive l; + int i, j; + + if(p == oldp) + return; + + oldp = selplanet = p; + esel = scene->getent(scene, "selection"); + if(esel != nil) + scene->delent(scene, esel); + if(p == nil) + return; + + e = p->body; + msel = newmodel(); + esel = newentity("selection", msel); + esel->RFrame3 = e->RFrame3; + + memset(&aabb, 0, sizeof aabb); + for(i = 0; i < e->mdl->nprims; i++) + for(j = 0; j < e->mdl->prims[i].type+1; j++){ + aabb.min = minpt3(aabb.min, e->mdl->prims[i].v[j].p); + aabb.max = maxpt3(aabb.max, e->mdl->prims[i].v[j].p); + } + aabb.min = mulpt3(aabb.min, p->scale*0.8); + aabb.max = mulpt3(aabb.max, p->scale*0.8); + aabb.min.w = aabb.max.w = 1; + + memset(&l, 0, sizeof l); + l.type = PLine; + l.v[0].c = l.v[1].c = Pt3(0.2666, 0.5333, 0.2666, 1); + /* bottom */ + l.v[0].p = aabb.min; l.v[1].p = qrotate(aabb.min, Vec3(0,1,0), PI/2); + msel->addprim(msel, l); + for(i = 0; i < 3; i++){ + l.v[0].p = l.v[1].p; l.v[1].p = qrotate(l.v[1].p, Vec3(0,1,0), PI/2); + msel->addprim(msel, l); + } + /* top */ + l.v[0].p = aabb.max; l.v[1].p = qrotate(aabb.max, Vec3(0,1,0), PI/2); + msel->addprim(msel, l); + for(i = 0; i < 3; i++){ + l.v[0].p = l.v[1].p; l.v[1].p = qrotate(l.v[1].p, Vec3(0,1,0), PI/2); + msel->addprim(msel, l); + } + /* struts */ + l.v[0].p = aabb.min; l.v[1].p = qrotate(aabb.max, Vec3(0,1,0), PI); + msel->addprim(msel, l); + for(i = 0; i < 3; i++){ + l.v[0].p = qrotate(l.v[0].p, Vec3(0,1,0), PI/2); + l.v[1].p = qrotate(l.v[1].p, Vec3(0,1,0), PI/2); + msel->addprim(msel, l); + } + + scene->addent(scene, esel); +} + static void sailor(void *arg) { @@ -284,18 +370,20 @@ identvshader(VSparams *sp) Point3 pos; p = getplanet(sp->su->entity->name); - assert(p != nil); - Matrix3 S = { - p->scale, 0, 0, 0, - 0, p->scale, 0, 0, - 0, 0, p->scale, 0, - 0, 0, 0, 1, - }; - pos = xform3(sp->v->p, S); + if(p != nil){ + Matrix3 S = { + p->scale, 0, 0, 0, + 0, p->scale, 0, 0, + 0, 0, p->scale, 0, + 0, 0, 0, 1, + }; + pos = xform3(sp->v->p, S); + sp->v->mtl = p->mtl; + sp->v->c = p->mtl->diffuse; + }else + pos = sp->v->p; - sp->v->mtl = p->mtl; - sp->v->c = p->mtl->diffuse; return world2clip(sp->su->camera, model2world(sp->su->entity, pos)); } @@ -496,8 +584,7 @@ lmb(void) p = &planets[i]; } } - if(p != nil) - selplanet = p; + selectplanet(p); return; } |