diff options
Diffstat (limited to 'vis.c')
| -rw-r--r-- | vis.c | 860 |
1 files changed, 860 insertions, 0 deletions
@@ -0,0 +1,860 @@ +#include <u.h> +#include <libc.h> +#include <thread.h> +#include <draw.h> +#include <memdraw.h> +#include <mouse.h> +#include <keyboard.h> +#include <geometry.h> +#include "libobj/obj.h" +#include "libgraphics/graphics.h" +#include "dat.h" +#include "fns.h" + +typedef struct Camcfg Camcfg; +struct Camcfg +{ + Point3 p, lookat, up; + double fov, clipn, clipf; + int ptype; +}; + +Rune keys[Ke] = { + [K↑] = Kup, + [K↓] = Kdown, + [K←] = Kleft, + [K→] = Kright, + [Krise] = Kpgup, + [Kfall] = Kpgdown, + [KR↑] = 'w', + [KR↓] = 's', + [KR←] = 'a', + [KR→] = 'd', + [KR↺] = 'q', + [KR↻] = 'e', + [Kzoomin] = 'z', + [Kzoomout] = 'x', + [Kcam0] = KF|1, + [Kcam1] = KF|2, + [Kcam2] = KF|3, + [Kcam3] = KF|4, + [Khud] = 'h', +}; +char stats[Se][256]; +Image *screenb; +Mousectl *mctl; +Keyboardctl *kctl; +Channel *drawc; +int kdown; +Shadertab *shader; +Model *model; +Entity *subject; +Scene *scene; +Mouse om; +Quaternion orient = {1,0,0,0}; + +Camera cams[4], *maincam; +Camcfg camcfgs[4] = { + 2,0,-4,1, + 0,0,0,1, + 0,1,0,0, + 0, 0.01, 100, ORTHOGRAPHIC, + + -2,0,-4,1, + 0,0,0,1, + 0,1,0,0, + 120*DEG, 0.01, 100, PERSPECTIVE, + + -2,0,4,1, + 0,0,0,1, + 0,1,0,0, + 0, 0.01, 100, ORTHOGRAPHIC, + + 2,0,4,1, + 0,0,0,1, + 0,1,0,0, + 80*DEG, 0.01, 100, PERSPECTIVE +}; +Point3 center = {0,0,0,1}; +LightSource light; /* global point light */ + +static int doprof; +static int inception; +static int showhud; +Color (*tsampler)(Memimage*,Point2); + +static int +min(int a, int b) +{ + return a < b? a: b; +} + +static int +max(int a, int b) +{ + return a > b? a: b; +} + +static Point3 +Vecquat(Quaternion q) +{ + return Vec3(q.i, q.j, q.k); +} + +static Point3 +Ptquat(Quaternion q, double w) +{ + return Pt3(q.i, q.j, q.k, w); +} + +Point3 +gouraudvshader(VSparams *sp) +{ + static double Ka = 0.1; /* ambient factor */ + static double Ks = 0.5; /* specular factor */ + double Kd; /* diffuse factor */ + double spec; + Point3 pos, lightdir, lookdir; + Material m; + Color ambient, diffuse, specular; + + sp->v->n = Vecquat(mulq(mulq(orient, Quatvec(0, sp->v->n)), invq(orient))); + sp->v->p = Ptquat(mulq(mulq(orient, Quatvec(0, sp->v->p)), invq(orient)), sp->v->p.w); + pos = model2world(sp->su->entity, sp->v->p); + if(sp->v->mtl != nil){ + m = *sp->v->mtl; + + ambient = mulpt3(light.c, Ka); + ambient.r *= m.ambient.r; + ambient.g *= m.ambient.g; + ambient.b *= m.ambient.b; + ambient.a *= m.ambient.a; + + lightdir = normvec3(subpt3(light.p, pos)); + Kd = fmax(0, dotvec3(sp->v->n, lightdir)); + diffuse = mulpt3(light.c, Kd); + diffuse.r *= m.diffuse.r; + diffuse.g *= m.diffuse.g; + diffuse.b *= m.diffuse.b; + diffuse.a *= m.diffuse.a; + + lookdir = normvec3(subpt3(maincam->p, pos)); + lightdir = qrotate(lightdir, sp->v->n, PI); + spec = pow(fmax(0, dotvec3(lookdir, lightdir)), m.shininess); + specular = mulpt3(light.c, spec*Ks); + specular.r *= m.specular.r; + specular.g *= m.specular.g; + specular.b *= m.specular.b; + specular.a *= m.specular.a; + + sp->v->c = addpt3(ambient, addpt3(diffuse, specular)); + } + return world2clip(maincam, pos); +} + +Color +gouraudshader(FSparams *sp) +{ + Color tc, c; + + if(sp->v.mtl != nil && sp->v.mtl->diffusemap != nil && sp->v.uv.w != 0){ + tc = texture(sp->v.mtl->diffusemap, sp->v.uv, tsampler); + }else if(sp->su->entity->mdl->tex != nil && sp->v.uv.w != 0) + tc = texture(sp->su->entity->mdl->tex, sp->v.uv, tsampler); + else + tc = Pt3(1,1,1,1); + + c.a = 1; + c.b = fclamp(sp->v.c.b*tc.b, 0, 1); + c.g = fclamp(sp->v.c.g*tc.g, 0, 1); + c.r = fclamp(sp->v.c.r*tc.r, 0, 1); + + return c; +} + +Point3 +phongvshader(VSparams *sp) +{ + Point3 pos; + Color a, d, s; + double ss; + + sp->v->n = Vecquat(mulq(mulq(orient, Quatvec(0, sp->v->n)), invq(orient))); + sp->v->p = Ptquat(mulq(mulq(orient, Quatvec(0, sp->v->p)), invq(orient)), sp->v->p.w); + pos = model2world(sp->su->entity, sp->v->p); + addvattr(sp->v, "pos", VAPoint, &pos); + if(sp->v->mtl != nil){ + a = sp->v->mtl->ambient; + d = sp->v->mtl->diffuse; + s = sp->v->mtl->specular; + ss = sp->v->mtl->shininess; + addvattr(sp->v, "ambient", VAPoint, &a); + addvattr(sp->v, "diffuse", VAPoint, &d); + addvattr(sp->v, "specular", VAPoint, &s); + addvattr(sp->v, "shininess", VANumber, &ss); + } + return world2clip(maincam, pos); +} + +Color +phongshader(FSparams *sp) +{ + static double Ka = 0.1; /* ambient factor */ + static double Ks = 0.5; /* specular factor */ + double Kd; /* diffuse factor */ + double spec; + Color ambient, diffuse, specular, tc, c; + Point3 pos, lookdir, lightdir; + Material m; + Vertexattr *va; + + va = getvattr(&sp->v, "pos"); + pos = va->p; + + va = getvattr(&sp->v, "ambient"); + m.ambient = va != nil? va->p: Pt3(1,1,1,1); + va = getvattr(&sp->v, "diffuse"); + m.diffuse = va != nil? va->p: Pt3(1,1,1,1); + va = getvattr(&sp->v, "specular"); + m.specular = va != nil? va->p: Pt3(1,1,1,1); + va = getvattr(&sp->v, "shininess"); + m.shininess = va != nil? va->n: 1; + + ambient = mulpt3(light.c, Ka); + ambient.r *= m.ambient.r; + ambient.g *= m.ambient.g; + ambient.b *= m.ambient.b; + ambient.a *= m.ambient.a; + + lightdir = normvec3(subpt3(light.p, pos)); + Kd = fmax(0, dotvec3(sp->v.n, lightdir)); + diffuse = mulpt3(light.c, Kd); + diffuse.r *= m.diffuse.r; + diffuse.g *= m.diffuse.g; + diffuse.b *= m.diffuse.b; + diffuse.a *= m.diffuse.a; + + lookdir = normvec3(subpt3(maincam->p, pos)); + lightdir = qrotate(lightdir, sp->v.n, PI); + spec = pow(fmax(0, dotvec3(lookdir, lightdir)), m.shininess); + specular = mulpt3(light.c, spec*Ks); + specular.r *= m.specular.r; + specular.g *= m.specular.g; + specular.b *= m.specular.b; + specular.a *= m.specular.a; + + if(sp->v.mtl != nil && sp->v.mtl->diffusemap != nil && sp->v.uv.w != 0) + tc = texture(sp->v.mtl->diffusemap, sp->v.uv, tsampler); + else if(sp->su->entity->mdl->tex != nil && sp->v.uv.w != 0) + tc = texture(sp->su->entity->mdl->tex, sp->v.uv, tsampler); + else + tc = Pt3(1,1,1,1); + + c = addpt3(ambient, addpt3(diffuse, specular)); + c.a = 1; + c.b = fclamp(c.b*tc.b, 0, 1); + c.g = fclamp(c.g*tc.g, 0, 1); + c.r = fclamp(c.r*tc.r, 0, 1); + + return c; +} + +Point3 +identvshader(VSparams *sp) +{ + Point3 pos, lightdir; + double intens; + + sp->v->n = Vecquat(mulq(mulq(orient, Quatvec(0, sp->v->n)), invq(orient))); + sp->v->p = Ptquat(mulq(mulq(orient, Quatvec(0, sp->v->p)), invq(orient)), sp->v->p.w); + pos = model2world(sp->su->entity, sp->v->p); + lightdir = normvec3(subpt3(light.p, pos)); + intens = fmax(0, dotvec3(sp->v->n, lightdir)); + addvattr(sp->v, "intensity", VANumber, &intens); + if(sp->v->mtl != nil) + sp->v->c = sp->v->mtl->diffuse; + return world2clip(maincam, pos); +} + +Color +toonshader(FSparams *sp) +{ + Vertexattr *va; + double intens; + + va = getvattr(&sp->v, "intensity"); + intens = va->n; + intens = intens > 0.85? 1: intens > 0.60? 0.80: intens > 0.45? 0.60: intens > 0.30? 0.45: intens > 0.15? 0.30: 0; + + return Pt3(intens, 0.6*intens, 0, 1); +} + +Color +identshader(FSparams *sp) +{ + Color tc, c; + + if(sp->v.mtl != nil && sp->v.mtl->diffusemap != nil && sp->v.uv.w != 0) + tc = texture(sp->v.mtl->diffusemap, sp->v.uv, tsampler); + else if(sp->su->entity->mdl->tex != nil && sp->v.uv.w != 0) + tc = texture(sp->su->entity->mdl->tex, sp->v.uv, tsampler); + else + tc = Pt3(1,1,1,1); + + c.a = 1; + c.b = fclamp(sp->v.c.b*tc.b, 0, 1); + c.g = fclamp(sp->v.c.g*tc.g, 0, 1); + c.r = fclamp(sp->v.c.r*tc.r, 0, 1); + + return c; +} + +Point3 +ivshader(VSparams *sp) +{ + sp->v->n = Vecquat(mulq(mulq(orient, Quatvec(0, sp->v->n)), invq(orient))); + sp->v->p = Ptquat(mulq(mulq(orient, Quatvec(0, sp->v->p)), invq(orient)), sp->v->p.w); + return world2clip(maincam, model2world(sp->su->entity, sp->v->p)); +} + +Color +triangleshader(FSparams *sp) +{ + Triangle2 t; + Rectangle bbox; + Point3 bc; + + t.p0 = Pt2(240,200,1); + t.p1 = Pt2(400,40,1); + t.p2 = Pt2(240,40,1); + + bbox = Rect( + min(min(t.p0.x, t.p1.x), t.p2.x), min(min(t.p0.y, t.p1.y), t.p2.y), + max(max(t.p0.x, t.p1.x), t.p2.x), max(max(t.p0.y, t.p1.y), t.p2.y) + ); + if(!ptinrect(sp->p, bbox)) + return Vec3(0,0,0); + + bc = barycoords(t, Pt2(sp->p.x,sp->p.y,1)); + if(bc.x < 0 || bc.y < 0 || bc.z < 0) + return Vec3(0,0,0); + + return Pt3(bc.x, bc.y, bc.z, 1); +} + +Color +circleshader(FSparams *sp) +{ + Point2 uv; + double r, d; + + uv = Pt2(sp->p.x,sp->p.y,1); + uv.x /= Dx(sp->su->fb->r); + uv.y /= Dy(sp->su->fb->r); +// r = 0.3; + r = 0.3*fabs(sin(sp->su->uni_time/1e9)); + d = vec2len(subpt2(uv, Vec2(0.5,0.5))); + + if(d > r + r*0.05 || d < r - r*0.05) + return Vec3(0,0,0); + + return Pt3(uv.x, uv.y, 0, 1); +} + +/* some shaping functions from The Book of Shaders, Chapter 5 */ +Color +sfshader(FSparams *sp) +{ + Point2 uv; + double y, pct; + + uv = Pt2(sp->p.x,sp->p.y,1); + uv.x /= Dx(sp->su->fb->r); + uv.y /= Dy(sp->su->fb->r); + uv.y = 1 - uv.y; /* make [0 0] the bottom-left corner */ + +// y = step(0.5, uv.x); +// y = pow(uv.x, 5); +// y = sin(uv.x); + y = sin(uv.x*sp->su->uni_time/1e8)/2.0 + 0.5; +// y = smoothstep(0.1, 0.9, uv.x); + pct = smoothstep(y-0.02, y, uv.y) - smoothstep(y, y+0.02, uv.y); + + return Pt3(flerp(y, 0, pct), flerp(y, 1, pct), flerp(y, 0, pct), 1); +} + +Color +boxshader(FSparams *sp) +{ + Point2 uv, p; + Point2 r; + + uv = Pt2(sp->p.x,sp->p.y,1); + uv.x /= Dx(sp->su->fb->r); + uv.y /= Dy(sp->su->fb->r); + r = Vec2(0.2,0.4); + + p = Pt2(fabs(uv.x - 0.5), fabs(uv.y - 0.5), 1); + p = subpt2(p, r); + p.x = fmax(p.x, 0); + p.y = fmax(p.y, 0); + + if(vec2len(p) > 0) + return Vec3(0,0,0); + + return Pt3(uv.x, uv.y, smoothstep(0,1,uv.x+uv.y), 1); +} + +Shadertab shadertab[] = { + { "triangle", ivshader, triangleshader }, + { "circle", ivshader, circleshader }, + { "box", ivshader, boxshader }, + { "sf", ivshader, sfshader }, + { "toon", identvshader, toonshader }, + { "ident", identvshader, identshader }, + { "gouraud", gouraudvshader, gouraudshader }, + { "phong", phongvshader, phongshader }, +}; +Shadertab * +getshader(char *name) +{ + int i; + + for(i = 0; i < nelem(shadertab); i++) + if(strcmp(shadertab[i].name, name) == 0) + return &shadertab[i]; + return nil; +} + +void +zoomin(void) +{ + maincam->fov = fclamp(maincam->fov - 1*DEG, 1*DEG, 359*DEG); + reloadcamera(maincam); +} + +void +zoomout(void) +{ + maincam->fov = fclamp(maincam->fov + 1*DEG, 1*DEG, 359*DEG); + reloadcamera(maincam); +} + +void +drawstats(void) +{ + int i; + + snprint(stats[Scamno], sizeof(stats[Scamno]), "CAM %lld", maincam-cams+1); + snprint(stats[Sfov], sizeof(stats[Sfov]), "FOV %g°", maincam->fov/DEG); + snprint(stats[Scampos], sizeof(stats[Scampos]), "%V", maincam->p); + snprint(stats[Scambx], sizeof(stats[Scambx]), "bx %V", maincam->bx); + snprint(stats[Scamby], sizeof(stats[Scamby]), "by %V", maincam->by); + snprint(stats[Scambz], sizeof(stats[Scambz]), "bz %V", maincam->bz); + snprint(stats[Sfps], sizeof(stats[Sfps]), "FPS %.0f/%.0f/%.0f/%.0f", !maincam->stats.max? 0: 1e9/maincam->stats.max, !maincam->stats.avg? 0: 1e9/maincam->stats.avg, !maincam->stats.min? 0: 1e9/maincam->stats.min, !maincam->stats.v? 0: 1e9/maincam->stats.v); + snprint(stats[Sframes], sizeof(stats[Sframes]), "frame %llud", maincam->stats.nframes); + snprint(stats[Sorient], sizeof(stats[Sorient]), "ℍ %V", (Point3)orient); + for(i = 0; i < Se; i++) + stringbg(screen, addpt(screen->r.min, Pt(10,10 + i*font->height)), display->black, ZP, font, stats[i], display->white, ZP); +} + +void +redraw(void) +{ + static Image *bg; + + if(bg == nil) + bg = eallocimage(display, UR, RGB24, 1, 0x888888FF); + + lockdisplay(display); + maincam->vp->draw(maincam->vp, screenb); + draw(screen, screen->r, bg, nil, ZP); + draw(screen, screen->r, screenb, nil, ZP); + if(showhud) + drawstats(); + flushimage(display, 1); + unlockdisplay(display); +} + +void +drawproc(void *) +{ + uvlong t0, Δt; + int fd; + + threadsetname("drawproc"); + + fd = -1; + if(inception){ + fd = open("/dev/screen", OREAD); + if(fd < 0) + sysfatal("open: %r"); + freememimage(model->tex); + if((model->tex = readmemimage(fd)) == nil) + sysfatal("readmemimage: %r"); + } + + t0 = nsec(); + for(;;){ + shootcamera(maincam, shader); + if(doprof) + fprint(2, "R %llud %llud\nE %llud %llud\nT %llud %llud\nr %llud %llud\n\n", + maincam->times.R[maincam->times.cur-1].t0, maincam->times.R[maincam->times.cur-1].t1, + maincam->times.E[maincam->times.cur-1].t0, maincam->times.E[maincam->times.cur-1].t1, + maincam->times.Tn[maincam->times.cur-1].t0, maincam->times.Tn[maincam->times.cur-1].t1, + maincam->times.Rn[maincam->times.cur-1].t0, maincam->times.Rn[maincam->times.cur-1].t1); + Δt = nsec() - t0; + if(Δt > HZ2MS(60)*1000000ULL){ + nbsend(drawc, nil); + t0 += Δt; + if(inception){ + freememimage(model->tex); + seek(fd, 0, 0); + if((model->tex = readmemimage(fd)) == nil) + sysfatal("readmemimage: %r"); + } + } + } +} + +void +lmb(void) +{ + if((om.buttons^mctl->buttons) == 0) + qball(screen->r, om.xy, mctl->xy, &orient, nil); +} + +void +mmb(void) +{ + enum { + MOVELIGHT, + TSNEAREST, + TSBILINEAR, + }; + static char *items[] = { + [MOVELIGHT] "move light", + [TSNEAREST] "use nearest sampler", + [TSBILINEAR] "use bilinear sampler", + nil, + }; + static Menu menu = { .item = items }; + char buf[256], *f[3]; + int nf; + + switch(menuhit(2, mctl, &menu, _screen)){ + case MOVELIGHT: + snprint(buf, sizeof buf, "%g %g %g", light.p.x, light.p.y, light.p.z); + if(enter("light pos", buf, sizeof buf, mctl, kctl, nil) <= 0) + return; + nf = tokenize(buf, f, 3); + if(nf != 3) + return; + light.p.x = strtod(f[0], nil); + light.p.y = strtod(f[1], nil); + light.p.z = strtod(f[2], nil); + break; + case TSNEAREST: + tsampler = neartexsampler; + break; + case TSBILINEAR: + tsampler = bilitexsampler; + break; + } + nbsend(drawc, nil); +} + +static char * +genrmbmenuitem(int idx) +{ + if(idx < nelem(shadertab)) + return shadertab[idx].name; + return nil; +} + +void +rmb(void) +{ + static Menu menu = { .gen = genrmbmenuitem }; + int idx; + + idx = menuhit(3, mctl, &menu, _screen); + if(idx < 0) + return; + shader = &shadertab[idx]; + for(idx = 0; idx < nelem(cams); idx++) + memset(&cams[idx].stats, 0, sizeof(cams[idx].stats)); + nbsend(drawc, nil); +} + +void +mouse(void) +{ + if((mctl->buttons & 1) != 0) + lmb(); + if((mctl->buttons & 2) != 0) + mmb(); + if((mctl->buttons & 4) != 0) + rmb(); + if((mctl->buttons & 8) != 0) + zoomin(); + if((mctl->buttons & 16) != 0) + zoomout(); + om = mctl->Mouse; +} + +void +kbdproc(void *) +{ + Rune r, *a; + char buf[128], *s; + int fd, n; + + threadsetname("kbdproc"); + + if((fd = open("/dev/kbd", OREAD)) < 0) + sysfatal("kbdproc: %r"); + memset(buf, 0, sizeof buf); + + for(;;){ + if(buf[0] != 0){ + n = strlen(buf)+1; + memmove(buf, buf+n, sizeof(buf)-n); + } + if(buf[0] == 0){ + if((n = read(fd, buf, sizeof(buf)-1)) <= 0) + break; + buf[n-1] = 0; + buf[n] = 0; + } + if(buf[0] == 'c'){ + chartorune(&r, buf+1); + if(r == Kdel){ + close(fd); + threadexitsall(nil); + }else + nbsend(kctl->c, &r); + } + if(buf[0] != 'k' && buf[0] != 'K') + continue; + s = buf+1; + kdown = 0; + while(*s){ + s += chartorune(&r, s); + for(a = keys; a < keys+Ke; a++) + if(r == *a){ + kdown |= 1 << a-keys; + break; + } + } + } +} + +void +keyproc(void *c) +{ + threadsetname("keyproc"); + + for(;;){ + nbsend(c, nil); + sleep(HZ2MS(100)); /* key poll rate */ + } +} + +void +handlekeys(void) +{ + static int okdown; + + if(kdown & 1<<K↑) + placecamera(maincam, subpt3(maincam->p, mulpt3(maincam->bz, 0.1)), maincam->bz, maincam->by); + if(kdown & 1<<K↓) + placecamera(maincam, addpt3(maincam->p, mulpt3(maincam->bz, 0.1)), maincam->bz, maincam->by); + if(kdown & 1<<K←) + placecamera(maincam, subpt3(maincam->p, mulpt3(maincam->bx, 0.1)), maincam->bz, maincam->by); + if(kdown & 1<<K→) + placecamera(maincam, addpt3(maincam->p, mulpt3(maincam->bx, 0.1)), maincam->bz, maincam->by); + if(kdown & 1<<Krise) + placecamera(maincam, addpt3(maincam->p, mulpt3(maincam->by, 0.1)), maincam->bz, maincam->by); + if(kdown & 1<<Kfall) + placecamera(maincam, subpt3(maincam->p, mulpt3(maincam->by, 0.1)), maincam->bz, maincam->by); + if(kdown & 1<<KR↑) + aimcamera(maincam, qrotate(maincam->bz, maincam->bx, 1*DEG)); + if(kdown & 1<<KR↓) + aimcamera(maincam, qrotate(maincam->bz, maincam->bx, -1*DEG)); + if(kdown & 1<<KR←) + aimcamera(maincam, qrotate(maincam->bz, maincam->by, 1*DEG)); + if(kdown & 1<<KR→) + aimcamera(maincam, qrotate(maincam->bz, maincam->by, -1*DEG)); + if(kdown & 1<<KR↺) + placecamera(maincam, maincam->p, maincam->bz, qrotate(maincam->by, maincam->bz, 1*DEG)); + if(kdown & 1<<KR↻) + placecamera(maincam, maincam->p, maincam->bz, qrotate(maincam->by, maincam->bz, -1*DEG)); + if(kdown & 1<<Kzoomin) + zoomin(); + if(kdown & 1<<Kzoomout) + zoomout(); + if(kdown & 1<<Kcam0) + maincam = &cams[0]; + if(kdown & 1<<Kcam1) + maincam = &cams[1]; + if(kdown & 1<<Kcam2) + maincam = &cams[2]; + if(kdown & 1<<Kcam3) + maincam = &cams[3]; + + if((okdown & 1<<Khud) == 0 && (kdown & 1<<Khud) != 0) + showhud ^= 1; + + okdown = kdown; +} + +void +resize(void) +{ + lockdisplay(display); + if(getwindow(display, Refnone) < 0) + fprint(2, "can't reattach to window\n"); + unlockdisplay(display); + nbsend(drawc, nil); +} + +static void +confproc(void) +{ + char buf[64]; + int fd; + + snprint(buf, sizeof buf, "/proc/%d/ctl", getpid()); + fd = open(buf, OWRITE); + if(fd < 0) + sysfatal("open: %r"); + + if(doprof) + fprint(fd, "profile\n"); +// fprint(fd, "pri 15\n"); +// fprint(fd, "wired 0\n"); +// setfcr(getfcr() & ~FPINVAL); + + close(fd); +} + +void +usage(void) +{ + fprint(2, "usage: %s [-t texture] [-n normals] [-s shader] model...\n", argv0); + exits("usage"); +} + +void +threadmain(int argc, char *argv[]) +{ + Viewport *v; + Renderer *rctl; + Channel *keyc; + OBJ *obj; + char *texpath, *norpath, *sname, *mdlpath; + int i, fd; + + GEOMfmtinstall(); + texpath = nil; + norpath = nil; + sname = "gouraud"; + ARGBEGIN{ + case 't': texpath = EARGF(usage()); break; + case 'n': norpath = EARGF(usage()); break; + case 's': sname = EARGF(usage()); break; + case L'ι': inception++; break; + case 'p': doprof++; break; + default: usage(); + }ARGEND; + if(argc < 1) + usage(); + + confproc(); + + if((shader = getshader(sname)) == nil) + sysfatal("couldn't find %s shader", sname); + + scene = newscene(nil); + while(argc--){ + mdlpath = argv[argc]; + model = newmodel(); + subject = newentity(model); + subject->p.x = argc*4; + scene->addent(scene, subject); + + if((obj = objparse(mdlpath)) == nil) + sysfatal("objparse: %r"); + loadobjmodel(model, obj); + objfree(obj); + + if(argc == 0 && texpath != nil){ + fd = open(texpath, OREAD); + if(fd < 0) + sysfatal("open: %r"); + if((model->tex = readmemimage(fd)) == nil) + sysfatal("readmemimage: %r"); + close(fd); + } + if(argc == 0 && norpath != nil){ + fd = open(norpath, OREAD); + if(fd < 0) + sysfatal("open: %r"); + if((model->nor = readmemimage(fd)) == nil) + sysfatal("readmemimage: %r"); + close(fd); + } + } + + if(memimageinit() != 0) + sysfatal("memimageinit: %r"); + if((rctl = initgraphics()) == nil) + sysfatal("initgraphics: %r"); + if(initdraw(nil, nil, "3d") < 0) + sysfatal("initdraw: %r"); + if((mctl = initmouse(nil, screen)) == nil) + sysfatal("initmouse: %r"); + + screenb = eallocimage(display, rectsubpt(screen->r, screen->r.min), RGBA32, 0, DNofill); + for(i = 0; i < nelem(cams); i++){ + v = mkviewport(screenb->r); + placecamera(&cams[i], camcfgs[i].p, camcfgs[i].lookat, camcfgs[i].up); + configcamera(&cams[i], v, camcfgs[i].fov, camcfgs[i].clipn, camcfgs[i].clipf, camcfgs[i].ptype); + cams[i].s = scene; + cams[i].rctl = rctl; + } + maincam = &cams[3]; + light.p = Pt3(0,100,100,1); + light.c = Pt3(1,1,1,1); + light.type = LIGHT_POINT; + tsampler = neartexsampler; + + kctl = emalloc(sizeof *kctl); + kctl->c = chancreate(sizeof(Rune), 16); + keyc = chancreate(sizeof(void*), 1); + drawc = chancreate(sizeof(void*), 1); + display->locking = 1; + unlockdisplay(display); + + proccreate(kbdproc, nil, mainstacksize); + proccreate(keyproc, keyc, mainstacksize); + proccreate(drawproc, nil, mainstacksize); + + for(;;){ + enum {MOUSE, RESIZE, KEY, DRAW}; + Alt a[] = { + {mctl->c, &mctl->Mouse, CHANRCV}, + {mctl->resizec, nil, CHANRCV}, + {keyc, nil, CHANRCV}, + {drawc, nil, CHANRCV}, + {nil, nil, CHANEND} + }; + switch(alt(a)){ + case MOUSE: mouse(); break; + case RESIZE: resize(); break; + case KEY: handlekeys(); break; + case DRAW: redraw(); break; + } + } +} |