void sceneGeneratePhotons(Scene *scene, const int lightRayBounces, const int numPhotonsPerLightSource) {
photonEndPointContainerClear(&scene->photons);
containerForeach (SceneObject *, object, scene->objects) {
// TODO: Distribute photons based on light intensity.
// Only emit photons from object with radiance.
if (!cEqual(sceneObjectRadiantFlux(*object), makeColorBlack())) {
// Spawn photons on the surface of the lightsource.
PhotonContainer emittedPhotons = makePhotonContainer(numPhotonsPerLightSource);
sceneObjectEmitPhotons(*object, numPhotonsPerLightSource, &emittedPhotons);
containerForeach (Photon, photon, emittedPhotons) {
// Save it for rendering.
photonEndPointContainerAddValue(&scene->photons, makePhotonEndPoint(*photon, makeIntersection(origin, makeVectorOrigo(), 0, makeVectorOrigo(), NULL)));
for(int bounce=0; bounce<lightRayBounces; ++bounce){
// Check if the photon hits anyting.
Intersection intersection = sceneIntersectRay(*scene, photon->heading);
if(intersection.hitType != surface)
break;
// Bounce the photon, filtering it by the reflectance.
*photon = materialSampleBRDF(intersection.material, intersection, *photon);
// Save it for rendering.
photonEndPointContainerAddValue(&scene->photons, makePhotonEndPoint(*photon, intersection));
}
}
// Done with them.
photonContainerDestroy(&emittedPhotons);
}
static EjsVar *invokeArrayOperator(Ejs *ejs, EjsVar *lhs, int opcode, EjsVar *rhs)
{
EjsVar *result;
if (rhs == 0 || lhs->type != rhs->type) {
if ((result = coerceArrayOperands(ejs, lhs, opcode, rhs)) != 0) {
return result;
}
}
switch (opcode) {
case EJS_OP_COMPARE_EQ: case EJS_OP_COMPARE_STRICTLY_EQ:
case EJS_OP_COMPARE_LE: case EJS_OP_COMPARE_GE:
return (EjsVar*) ejsCreateBoolean(ejs, (lhs == rhs));
case EJS_OP_COMPARE_NE: case EJS_OP_COMPARE_STRICTLY_NE:
case EJS_OP_COMPARE_LT: case EJS_OP_COMPARE_GT:
return (EjsVar*) ejsCreateBoolean(ejs, !(lhs == rhs));
/*
* Unary operators
*/
case EJS_OP_COMPARE_NOT_ZERO:
return (EjsVar*) ejs->trueValue;
case EJS_OP_COMPARE_UNDEFINED:
case EJS_OP_COMPARE_NULL:
case EJS_OP_COMPARE_FALSE:
case EJS_OP_COMPARE_TRUE:
case EJS_OP_COMPARE_ZERO:
return (EjsVar*) ejs->falseValue;
case EJS_OP_LOGICAL_NOT: case EJS_OP_NOT: case EJS_OP_NEG:
return (EjsVar*) ejs->oneValue;
/*
* Binary operators
*/
case EJS_OP_DIV: case EJS_OP_MUL: case EJS_OP_REM:
case EJS_OP_SHR: case EJS_OP_USHR: case EJS_OP_XOR:
return (EjsVar*) ejs->zeroValue;
#if BLD_FEATURE_EJS_LANG >= EJS_SPEC_PLUS
/*
* Operator overload
*/
case EJS_OP_ADD:
result = (EjsVar*) ejsCreateArray(ejs, 0);
pushArray(ejs, (EjsArray*) result, 1, (EjsVar**) &lhs);
pushArray(ejs, (EjsArray*) result, 1, (EjsVar**) &rhs);
return result;
case EJS_OP_AND:
return (EjsVar*) makeIntersection(ejs, (EjsArray*) lhs, (EjsArray*) rhs);
case EJS_OP_OR:
return (EjsVar*) makeUnion(ejs, (EjsArray*) lhs, (EjsArray*) rhs);
case EJS_OP_SHL:
return pushArray(ejs, (EjsArray*) lhs, 1, &rhs);
case EJS_OP_SUB:
return (EjsVar*) removeArrayElements(ejs, (EjsArray*) lhs, (EjsArray*) rhs);
#endif
default:
ejsThrowTypeError(ejs, "Opcode %d not implemented for type %s", opcode, lhs->type->qname.name);
return 0;
}
mprAssert(0);
}
static EjsAny *invokeArrayOperator(Ejs *ejs, EjsAny *lhs, int opcode, EjsAny *rhs)
{
EjsAny *result;
if (rhs == 0 || TYPE(lhs) != TYPE(rhs)) {
if ((result = coerceArrayOperands(ejs, lhs, opcode, rhs)) != 0) {
return result;
}
}
switch (opcode) {
case EJS_OP_COMPARE_EQ: case EJS_OP_COMPARE_STRICTLY_EQ:
case EJS_OP_COMPARE_LE: case EJS_OP_COMPARE_GE:
return ejsCreateBoolean(ejs, (lhs == rhs));
case EJS_OP_COMPARE_NE: case EJS_OP_COMPARE_STRICTLY_NE:
case EJS_OP_COMPARE_LT: case EJS_OP_COMPARE_GT:
return ejsCreateBoolean(ejs, !(lhs == rhs));
/*
Unary operators
*/
case EJS_OP_COMPARE_NOT_ZERO:
return ESV(true);
case EJS_OP_COMPARE_UNDEFINED:
case EJS_OP_COMPARE_NULL:
case EJS_OP_COMPARE_FALSE:
case EJS_OP_COMPARE_TRUE:
case EJS_OP_COMPARE_ZERO:
return ESV(false);
case EJS_OP_LOGICAL_NOT: case EJS_OP_NOT: case EJS_OP_NEG:
return ESV(one);
/*
Binary operators
*/
case EJS_OP_DIV: case EJS_OP_MUL: case EJS_OP_REM:
case EJS_OP_SHR: case EJS_OP_USHR: case EJS_OP_XOR:
return ESV(zero);
/*
Operator overload
*/
case EJS_OP_ADD:
result = ejsCreateArray(ejs, 0);
pushArray(ejs, result, 1, &lhs);
pushArray(ejs, result, 1, &rhs);
return result;
case EJS_OP_AND:
return makeIntersection(ejs, lhs, rhs);
case EJS_OP_OR:
return makeUnion(ejs, lhs, rhs);
case EJS_OP_SHL:
return pushArray(ejs, lhs, 1, &rhs);
case EJS_OP_SUB:
return ejsRemoveItems(ejs, lhs, rhs);
default:
ejsThrowTypeError(ejs, "Opcode %d not implemented for type %@", opcode, TYPE(lhs)->qname.name);
return 0;
}
assert(0);
}
