void VRNature::addScrub(VRPolygonPtr area, bool addGround) {
float a = area->computeArea();
if (a == 0) return;
//VRTimer timer; timer.start();
//int t0 = timer.stop();
if (auto t = terrain.lock()) t->elevatePolygon(area, 0.18);
Vec3d median = area->getBoundingBox().center();
area->translate(-median);
for (auto p : area->getRandomPoints(1.0, -0.1, 0.7)) createRandomBush(median+p);
if (addGround) {
Triangulator tri;
tri.add(*area);
auto ground = tri.compute();
ground->translate(median);
ground->setPositionalTexCoords(1.0, 0, Vec3i(0,2,1));
ground->updateNormals();
ground->flipNormals();
if (!groundPatches) {
groundPatches = VRGeometry::create("groundPatches");
addChild( groundPatches );
VRTextureGenerator tg;
tg.addSimpleNoise( Vec3i(128,128,1), false, Color4f(0.85,0.8,0.75,1), Color4f(0.5,0.3,0,1) );
auto mat = VRMaterial::create("earth");
mat->setTexture(tg.compose());
groundPatches->setMaterial(mat);
}
groundPatches->merge(ground, ground->getPose());
groundPatches->setPositionalTexCoords(1.0, 0, Vec3i(0,2,1)); // TODO: fix issues in VRGeoData
}
}
void VRNature::addGrassPatch(VRPolygonPtr Area, bool updateLODs, bool addGround) { // TODO: needs optimizations!
//VRTimer timer; timer.start();
//int t0 = timer.stop();
//cout << "VRNature::addGrassPatch " << t0 << endl;
int i=0;
auto ground = VRGeometry::create("ground");
float a = Area->computeArea();
if (a == 0) return;
//cout << "VRNature::addGrassPatch " << a << endl;
map<VRLodLeafPtr, bool> toUpdate;
for (auto area : Area->gridSplit(10.0)) {
if (area->isCCW()) area->reverseOrder();
//cout << " sub Area " << i << " " << timer.stop() - t0 << endl;
if (auto t = terrain.lock()) t->elevatePolygon(area, 0.18);
Vec3d median = area->getBoundingBox().center();
area->translate(-median);
//cout << " A1 " << timer.stop() - t0 << endl;
auto grass = VRGrassPatch::create();
grass->addAttachment("grass", 0);
grass->setArea(area);
//cout << " A2 " << timer.stop() - t0 << endl;
grassPatchRefs[grass.get()] = grass;
auto leaf = lodTree->addObject(grass, median, 0); // pose contains the world position!
grass->setWorldPosition(median);
toUpdate[leaf] = true;
//cout << " A3 " << timer.stop() - t0 << endl;
//cout << " VRNature::addGrassPatch " << median << " " << area->computeArea() << endl;
if (addGround) {
Triangulator tri;
tri.add(*area);
auto geo = tri.compute();
geo->translate(median);
ground->merge(geo);
}
i++;
}
if (updateLODs) for (auto l : toUpdate) computeLODs(l.first);
if (addGround) {
VRTextureGenerator tg;
tg.addSimpleNoise( Vec3i(128,128,1), true, Color4f(0.85,0.8,0.75,1), Color4f(0.5,0.3,0,1) );
auto mat = VRMaterial::create("earth");
mat->setTexture(tg.compose());
mat->clearTransparency();
ground->setPositionalTexCoords(1.0, 0, Vec3i(0,2,1));
//addChild(ground);
if (!grassGroundPatches) {
grassGroundPatches = VRGeometry::create("grassGroundPatches");
addChild( grassGroundPatches );
grassGroundPatches->setMaterial(mat);
}
grassGroundPatches->merge(ground);
}
}
