shithub: 3dee

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set up a scene to hold the world and its entities.

--- a/main.c

+++ b/main.c

@@ -43,9 +43,10 @@

 Mousectl *mctl;

 Channel *drawc;

 int kdown;

-OBJ *model;

-Memimage *modeltex;

 Shader *shader;

+Model *model;

+Entity *subject;

+Scene *scene;

 double θ, ω = 0;

 Camera cams[4], *maincam;

@@ -105,6 +106,12 @@

 //	string3(maincam, pz, display->black, font, "z");

 //}

+static Point3

+model2world(Entity *e, Point3 p)

+{

+	return invrframexform3(p, *e);

+}

+

 Point3

 vertshader(VSparams *sp)

 {

@@ -111,7 +118,7 @@

 	sp->v->n = qrotate(sp->v->n, Vec3(0,1,0), θ+fmod(ω*sp->su->uni_time/1e9, 2*PI));

 	sp->v->intensity = fmax(0, dotvec3(sp->v->n, light));

 	sp->v->p = qrotate(sp->v->p, Vec3(0,1,0), θ+fmod(ω*sp->su->uni_time/1e9, 2*PI));

-	return world2clip(maincam, sp->v->p);

+	return world2clip(maincam, model2world(subject, sp->v->p));

 }

 Memimage *

@@ -335,22 +342,22 @@

 		fd = open("/dev/screen", OREAD);

 		if(fd < 0)

 			sysfatal("open: %r");

-		freememimage(modeltex);

-		if((modeltex = readmemimage(fd)) == nil)

+		freememimage(model->tex);

+		if((model->tex = readmemimage(fd)) == nil)

 			sysfatal("readmemimage: %r");

 	}

 	t0 = nsec();

 	for(;;){

-		shootcamera(maincam, model, modeltex, shader);

+		shootcamera(maincam, shader);

 		Δt = nsec() - t0;

 		if(Δt > HZ2MS(60)*1000000ULL){

 			nbsend(drawc, nil);

 			t0 += Δt;

 			if(inception){

-				freememimage(modeltex);

+				freememimage(model->tex);

 				seek(fd, 0, 0);

-				if((modeltex = readmemimage(fd)) == nil)

+				if((model->tex = readmemimage(fd)) == nil)

 					sysfatal("readmemimage: %r");

 			}

 		}

@@ -535,16 +542,22 @@

 	if((shader = getshader(sname)) == nil)

 		sysfatal("couldn't find %s shader", sname);

-	if((model = objparse(mdlpath)) == nil)

+	scene = newscene(nil);

+	model = newmodel();

+	subject = newentity(model);

+	scene->addent(scene, subject);

+

+	if((model->obj = objparse(mdlpath)) == nil)

 		sysfatal("objparse: %r");

 	if(texpath != nil){

 		fd = open(texpath, OREAD);

 		if(fd < 0)

 			sysfatal("open: %r");

-		if((modeltex = readmemimage(fd)) == nil)

+		if((model->tex = readmemimage(fd)) == nil)

 			sysfatal("readmemimage: %r");

 		close(fd);

 	}

+	refreshmodel(model);

 	if(initdraw(nil, nil, "3d") < 0)

 		sysfatal("initdraw: %r");

@@ -558,6 +571,7 @@

 		v = mkviewport(screenfb->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;

 	}

 	maincam = &cams[0];

 	light = normvec3(subpt3(light, center));