Mercurial > fife-parpg
comparison engine/core/view/camera.cpp @ 18:40a7c9618ade
* new function which lists instances in a rect
| author | spq@33b003aa-7bff-0310-803a-e67f0ece8222 |
|---|---|
| date | Mon, 07 Jul 2008 01:40:57 +0000 |
| parents | ab09325f901e |
| children | 1e3b68c260a6 |
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| 17:ae46cee19e76 | 18:40a7c9618ade |
|---|---|
| 321 } | 321 } |
| 322 } | 322 } |
| 323 } | 323 } |
| 324 } | 324 } |
| 325 | 325 |
| 326 void Camera::getMatchingInstances(Rect screen_rect, Layer& layer, std::list<Instance*>& instances) { | |
| 327 instances.clear(); | |
| 328 const std::vector<Instance*>& layer_instances = m_layer_to_instances[&layer]; | |
| 329 std::vector<Instance*>::const_iterator instance_it = layer_instances.end(); | |
| 330 while (instance_it != layer_instances.begin()) { | |
| 331 --instance_it; | |
| 332 Instance* i = (*instance_it); | |
| 333 InstanceVisual* visual = i->getVisual<InstanceVisual>(); | |
| 334 InstanceVisualCacheItem& vc = visual->getCacheItem(this); | |
| 335 if ((vc.dimensions.intersects(screen_rect))) { | |
| 336 assert(vc.image); | |
| 337 Uint8 r, g, b, a; | |
| 338 for(int xx = screen_rect.x; xx < screen_rect.x + screen_rect.w; xx++) { | |
| 339 for(int yy = screen_rect.y; yy < screen_rect.y + screen_rect.h; yy++) { | |
| 340 int x = xx - vc.dimensions.x; | |
| 341 int y = yy - vc.dimensions.y; | |
| 342 if (m_zoom != 1.0) { | |
| 343 double fx = static_cast<double>(x); | |
| 344 double fy = static_cast<double>(y); | |
| 345 double fow = static_cast<double>(vc.image->getWidth()); | |
| 346 double foh = static_cast<double>(vc.image->getHeight()); | |
| 347 double fsw = static_cast<double>(vc.dimensions.w); | |
| 348 double fsh = static_cast<double>(vc.dimensions.h); | |
| 349 x = static_cast<int>(round(fx / fsw * fow)); | |
| 350 y = static_cast<int>(round(fy / fsh * foh)); | |
| 351 } | |
| 352 vc.image->getPixelRGBA(x, y, &r, &b, &g, &a); | |
| 353 // instance is hit with mouse if not totally transparent | |
| 354 if (a != 0) { | |
| 355 instances.push_back(i); | |
| 356 goto found_non_transparent_pixel; | |
| 357 } | |
| 358 } | |
| 359 } | |
| 360 found_non_transparent_pixel:; | |
| 361 } | |
| 362 } | |
| 363 } | |
| 364 | |
| 326 void Camera::getMatchingInstances(Location& loc, std::list<Instance*>& instances, bool use_exactcoordinates) { | 365 void Camera::getMatchingInstances(Location& loc, std::list<Instance*>& instances, bool use_exactcoordinates) { |
| 327 instances.clear(); | 366 instances.clear(); |
| 328 const std::vector<Instance*>& layer_instances = m_layer_to_instances[loc.getLayer()]; | 367 const std::vector<Instance*>& layer_instances = m_layer_to_instances[loc.getLayer()]; |
| 329 std::vector<Instance*>::const_iterator instance_it = layer_instances.end(); | 368 std::vector<Instance*>::const_iterator instance_it = layer_instances.end(); |
| 330 while (instance_it != layer_instances.begin()) { | 369 while (instance_it != layer_instances.begin()) { |