void ExecImplicitStmt(Stmt *stmt)
{
ImplicitStmtData *sd = (ImplicitStmtData *)stmt->data;
Vec3 bmin, bmax, steps;
Object *obj, *oldobj;
V3Set(&bmin, -1.0, -1.0, -1.0);
V3Set(&bmax, 1.0, 1.0, 1.0);
assert(sd->fn != NULL);
assert(sd->bmin != NULL);
assert(sd->bmax != NULL);
ExprEvalVector(sd->bmin, &bmin);
ExprEvalVector(sd->bmax, &bmax);
if(sd->steps != NULL)
ExprEvalVector(sd->steps, &steps);
else
V3Set(&steps, 32.0, 32.0, 32.0);
if((obj = Ray_MakeImplicit(sd->fn, &bmin, &bmax, &steps)) != NULL)
{
/* The ray tracer now has the fn expr, set the stmt's ptr to */
/* NULL so that DeleteImplicitStmt() will not delete it. */
/* The ray tracer will delete it when finished. */
sd->fn = NULL;
obj->surface = Ray_ShareSurface(default_surface);
ScnBuild_AddObject(obj);
oldobj = objstack_ptr->curobj;
objstack_ptr->curobj = obj;
ExecBlock(stmt, sd->block);
objstack_ptr->curobj = oldobj;
}
}
void ExecLoadImageMapStmt(Stmt *stmt)
{
LoadImageMapStmtData *sd = (LoadImageMapStmtData *)stmt->data;
ColorMap *old_cmap = cur_cmap;
if((cur_cmap = ColorMap_Create()) != NULL)
{
if(Symbol_AddLocal(sd->name, DECL_COLOR_MAP, 0, (void *)cur_cmap))
ExecBlock(stmt, sd->block);
/* Note: Color map will be deleted if symbol table fails to add it. */
}
cur_cmap = old_cmap;
}
void ExecTriangleStmt(Stmt *stmt)
{
TriangleStmtData *sd = (TriangleStmtData *)stmt->data;
float pts[9], norms[9], uv[6];
float *ppts, *pnorms, *puv;
Vec3 v;
Object *obj, *oldobj;
ppts = pnorms = puv = NULL;
assert(sd->pt1 != NULL);
assert(sd->pt2 != NULL);
assert(sd->pt3 != NULL);
ExprEvalVector(sd->pt1, &v);
pts[0] = (float)v.x; pts[1] = (float)v.y; pts[2] = (float)v.z;
ExprEvalVector(sd->pt2, &v);
pts[3] = (float)v.x; pts[4] = (float)v.y; pts[5] = (float)v.z;
ExprEvalVector(sd->pt3, &v);
pts[6] = (float)v.x; pts[7] = (float)v.y; pts[8] = (float)v.z;
ppts = pts;
if (sd->n1 != NULL)
{
assert(sd->n2 != NULL);
assert(sd->n3 != NULL);
ExprEvalVector(sd->n1, &v);
norms[0] = (float)v.x; norms[1] = (float)v.y; norms[2] = (float)v.z;
ExprEvalVector(sd->n2, &v);
norms[3] = (float)v.x; norms[4] = (float)v.y; norms[5] = (float)v.z;
ExprEvalVector(sd->n3, &v);
norms[6] = (float)v.x; norms[7] = (float)v.y; norms[8] = (float)v.z;
pnorms = norms;
}
if (sd->u != NULL)
{
assert(sd->v != NULL);
ExprEvalVector(sd->u, &v);
uv[0] = (float)v.x; uv[2] = (float)v.y; uv[4] = (float)v.z;
ExprEvalVector(sd->v, &v);
uv[1] = (float)v.x; uv[3] = (float)v.y; uv[5] = (float)v.z;
puv = uv;
}
if ((obj = Ray_MakeTriangle(ppts, pnorms, puv)) != NULL)
{
obj->surface = Ray_ShareSurface(default_surface);
ScnBuild_AddObject(obj);
oldobj = objstack_ptr->curobj;
objstack_ptr->curobj = obj;
ExecBlock(stmt, sd->block);
objstack_ptr->curobj = oldobj;
}
}
//
// Cineractive::GameTimeSim
//
void Cineractive::GameTimeSim()
{
if (moviePrim)
{
if (moviePrim->done)
{
delete moviePrim;
moviePrim = NULL;
}
else
{
moviePrim->Notify(0x7FEF2C7B); // "CycleTick"
return;
}
}
// Currently elapsed seconds
elapsedCycles = GameTime::GameCycle() - startCycle;
// Any new instructions to instantiate?
while (nextScope && (nextCycle <= elapsedCycles && !moviePrim))
{
ExecBlock(nextScope);
NextInstruction();
}
// Send all primitives a cycle tick message
NList<Prim>::Iterator i(&primitiveList);
Prim *prim;
while ((prim = i++) != NULL)
{
if (prim->done)
{
primitiveList.Dispose(prim);
}
else
{
prim->Notify(0x7FEF2C7B); // "CycleTick"
}
}
}
void ExecInfiniteLightStmt(Stmt *stmt)
{
InfiniteLightStmtData *lsd = (InfiniteLightStmtData *)stmt->data;
Light *light, *prev_light;
Vec3 dir, color;
V3Set(&dir, 0.0, 0.0, -1.0);
V3Set(&color, 1.0, 1.0, 1.0);
if(lsd->dir != NULL)
ExprEvalVector(lsd->dir, &dir);
if(lsd->color != NULL)
ExprEvalVector(lsd->color, &color);
if((light = Ray_MakeInfiniteLight(&dir, &color)) != NULL)
{
prev_light = cur_light;
cur_light = light;
ExecBlock(stmt, lsd->block);
Ray_AddLight(&ray_setup_data->lights, light);
cur_light = prev_light;
}
}
void ExecLightStmt(Stmt *stmt)
{
LightStmtData *lsd = (LightStmtData *)stmt->data;
Light *light, *prev_light;
Vec3 from, color;
double falloff;
V3Set(&from, 0.0, 0.0, 0.0);
V3Set(&color, 1.0, 1.0, 1.0);
falloff = 0.0;
if(lsd->from != NULL)
ExprEvalVector(lsd->from, &from);
if(lsd->color != NULL)
ExprEvalVector(lsd->color, &color);
if(lsd->falloff != NULL)
falloff = ExprEvalDouble(lsd->falloff);
if((light = Ray_MakePointLight(&from, &color, falloff)) != NULL)
{
prev_light = cur_light;
cur_light = light;
ExecBlock(stmt, lsd->block);
Ray_AddLight(&ray_setup_data->lights, light);
cur_light = prev_light;
}
}
