comparison: src/glcamera.cpp
src/glcamera.cpp
- changeset 1177
- 8661b9237ed5
- parent 1151
- 0eddb5bcf25b
- child 1178
- 3a88e7a60b63
equal
deleted
inserted
replaced
| 1176:07b574a4e31d | 1177:8661b9237ed5 |
|---|---|
| 15 * You should have received a copy of the GNU General Public License | 15 * You should have received a copy of the GNU General Public License |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 */ | 17 */ |
| 18 | 18 |
| 19 #include "glcamera.h" | 19 #include "glcamera.h" |
| 20 #include "glrenderer.h" | |
| 20 #include "grid.h" | 21 #include "grid.h" |
| 21 #include "miscallenous.h" | 22 #include "miscallenous.h" |
| 22 | 23 |
| 23 /* | 24 /* |
| 24 * Constructs a fixed camera from parameters. | 25 * Constructs a fixed camera from parameters. |
| 251 for (int j = 0; j < 4; ++j) | 252 for (int j = 0; j < 4; ++j) |
| 252 matrix(i, j) *= scale; | 253 matrix(i, j) *= scale; |
| 253 | 254 |
| 254 return matrix; | 255 return matrix; |
| 255 } | 256 } |
| 257 | |
| 258 static const GLRotationMatrix ldrawToIdealAdapterMatrix = {1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1}; | |
| 259 | |
| 260 /* | |
| 261 * Converts from rea co-ordinates to ideal co-ordinates. | |
| 262 * In ideal co-ordinates, X and Y axes correspond to the 2D X and Y as seen in the camera, and +Z is "outwards" from the screen. | |
| 263 */ | |
| 264 Vertex GLCamera::idealize(const Vertex& realCoordinates) const | |
| 265 { | |
| 266 return realCoordinates.transformed(m_rotationMatrix).transformed(ldrawToIdealAdapterMatrix); | |
| 267 } | |
| 268 | |
| 269 /* | |
| 270 * Converts from ideal co-ordinates to real co-ordinates. | |
| 271 */ | |
| 272 Vertex GLCamera::realize(const Vertex& idealCoordinates) const | |
| 273 { | |
| 274 // The adapter matrix would be inverted here, but it is its own inverse so let's not bother. | |
| 275 return idealCoordinates.transformed(ldrawToIdealAdapterMatrix).transformed(m_rotationMatrix.inverted()); | |
| 276 } |
