/usr/include/OGRE/Volume/OgreVolumeCSGSource.h is in libogre-1.9-dev 1.9.0+dfsg1-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 | /*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/
Copyright (c) 2000-2013 Torus Knot Software Ltd
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/
#ifndef __Ogre_Volume_CSGSource_H__
#define __Ogre_Volume_CSGSource_H__
#include "OgreVolumeSource.h"
#include "OgreVector3.h"
#include "OgreAxisAlignedBox.h"
#include "OgreVolumePrerequisites.h"
#include "OgreVolumeSimplexNoise.h"
namespace Ogre {
namespace Volume {
/** A sphere.
*/
class _OgreVolumeExport CSGSphereSource : public Source
{
protected:
/** The radius.
*/
const Real mR;
/** The center.
*/
const Vector3 mCenter;
public:
/** Constructor.
@param r
The radius.
@param center
The center.
*/
CSGSphereSource(const Real r, const Vector3 ¢er);
/** Overridden from Source.
*/
virtual Vector4 getValueAndGradient(const Vector3 &position) const;
/** Overridden from Source.
*/
virtual Real getValue(const Vector3 &position) const;
};
/** A plane.
*/
class _OgreVolumeExport CSGPlaneSource : public Source
{
protected:
/// The distance to zero of the plane.
const Real mD;
/// The normal of the plane.
Vector3 mNormal;
public:
/** Constructor.
@param d
The distance to zero of the plane.
@param normal
The planes normal.
*/
CSGPlaneSource(const Real d, const Vector3 &normal);
/** Overridden from Source.
*/
virtual Vector4 getValueAndGradient(const Vector3 &position) const;
/** Overridden from Source.
*/
virtual Real getValue(const Vector3 &position) const;
};
/** A not rotated cube.
*/
class _OgreVolumeExport CSGCubeSource : public Source
{
protected:
/// The six possible normals of the cube.
static Vector3 mBoxNormals[6];
/// The box.
AxisAlignedBox mBox;
/** Gets the distance of a point to the nearest cube element.
@param position
The point to test.
@return
The distance.
*/
inline Real distanceTo(const Vector3 &position) const
{
Real distance;
const Vector3 dMin = position - mBox.getMinimum();
const Vector3 dMax = mBox.getMaximum() - position;
// Check if inside of the box
if (dMin.x >= (Real)0.0 && dMin.y >= (Real)0.0 && dMin.z >= (Real)0.0 &&
dMax.x >= (Real)0.0 && dMax.y >= (Real)0.0 && dMax.z >= (Real)0.0)
{
const Real d[6] = {dMin.x, dMin.y, dMin.z, dMax.x, dMax.y, dMax.z};
distance = Math::POS_INFINITY;
for (size_t i = 0; i < 6; ++i)
{
if (d[i] < distance)
{
distance = d[i];
}
}
}
else
{
distance = -mBox.distance(position);
}
return distance;
}
public:
/** Constructor.
@param min
The lower back left corner.
@param max
The upper front right corner.
*/
CSGCubeSource(const Vector3 &min, const Vector3 &max);
/** Overridden from Source.
*/
virtual Vector4 getValueAndGradient(const Vector3 &position) const;
/** Overridden from Source.
*/
virtual Real getValue(const Vector3 &position) const;
};
/** Abstract operation volume source holding two sources as operants.
*/
class _OgreVolumeExport CSGOperationSource : public Source
{
protected:
/// The first operant.
const Source *mA;
/// The second operant.
const Source *mB;
/** Constructor. Protected to be callable from child classes.
@param a
The first operator.
@param b
The second operator.
*/
CSGOperationSource(const Source *a, const Source *b);
/** Constructor, sets the sources to null.
Protected to be callable from child classes.
*/
CSGOperationSource(void);
public:
/** Gets the first operator source.
@return
The first operator source.
*/
virtual const Source* getSourceA() const;
/** Sets the first operator source.
@param a
The first operator source.
*/
virtual void setSourceA(Source *a);
/** Gets the second operator source.
@return
The second operator source.
*/
virtual const Source* getSourceB(void) const;
/** Sets the second operator source.
@param b
The second operator source.
*/
virtual void setSourceB(Source *b);
};
/** Builds the intersection between two sources.
*/
class _OgreVolumeExport CSGIntersectionSource : public CSGOperationSource
{
public:
/** Constructor.
@param a
The first operator.
@param b
The second operator.
*/
CSGIntersectionSource(const Source *a, const Source *b);
/** Constructor, sets the sources to null.
*/
CSGIntersectionSource(void);
/** Overridden from Source.
*/
virtual Vector4 getValueAndGradient(const Vector3 &position) const;
/** Overridden from Source.
*/
virtual Real getValue(const Vector3 &position) const;
};
/** Builds the union between two sources.
*/
class _OgreVolumeExport CSGUnionSource : public CSGOperationSource
{
public:
/** Constructor.
@param a
The first operator.
@param b
The second operator.
*/
CSGUnionSource(const Source *a, const Source *b);
/** Constructor, sets the sources to null.
*/
CSGUnionSource(void);
/** Overridden from Source.
*/
virtual Vector4 getValueAndGradient(const Vector3 &position) const;
/** Overridden from Source.
*/
virtual Real getValue(const Vector3 &position) const;
};
/** Builds the difference between two sources.
*/
class _OgreVolumeExport CSGDifferenceSource : public CSGOperationSource
{
public:
/** Constructor.
@param a
The first operator.
@param b
The second operator.
*/
CSGDifferenceSource(const Source *a, const Source *b);
/** Constructor, sets the sources to null.
*/
CSGDifferenceSource(void);
/** Overridden from Source.
*/
virtual Vector4 getValueAndGradient(const Vector3 &position) const;
/** Overridden from Source.
*/
virtual Real getValue(const Vector3 &position) const;
};
/** Source which does a unary operation to another one.
*/
class _OgreVolumeExport CSGUnarySource : public Source
{
protected:
/// The first operant.
const Source *mSrc;
/** Constructor. Protected to be callable from child classes.
@param src
The operator.
*/
CSGUnarySource(const Source *src);
/** Constructor. Sets the source to null.
Protected to be callable from child classes.
*/
CSGUnarySource(void);
public:
/** Gets the source.
@return
The source.
*/
virtual const Source* getSource(void) const;
/** Sets the source.
@param a
The source.
*/
virtual void setSource(Source *a);
};
/** Negates the given volume.
*/
class _OgreVolumeExport CSGNegateSource : public CSGUnarySource
{
public:
/** Constructor.
@param src
The source to negate.
*/
explicit CSGNegateSource(const Source *src);
/** Constructor. Sets the source to null.
*/
CSGNegateSource(void);
/** Overridden from Source.
*/
virtual Vector4 getValueAndGradient(const Vector3 &position) const;
/** Overridden from Source.
*/
virtual Real getValue(const Vector3 &position) const;
};
/** Scales the given volume source.
*/
class _OgreVolumeExport CSGScaleSource : public CSGUnarySource
{
protected:
/// Holds the dimensions of the volume.
Real mScale;
public:
/** Constructor.
@param src
The source to scale.
@param scale
The scale of the source.
*/
CSGScaleSource(const Source *src, const Real scale);
/** Overridden from Source.
*/
virtual Vector4 getValueAndGradient(const Vector3 &position) const;
/** Overridden from Source.
*/
virtual Real getValue(const Vector3 &position) const;
};
class _OgreVolumeExport CSGNoiseSource: public CSGUnarySource
{
protected:
/// The frequencies of the octaves.
Real *mFrequencies;
/// The amplitudes of the octaves.
Real *mAmplitudes;
/// The amount of octaves.
size_t mNumOctaves;
/// To make some noise.
SimplexNoise mNoise;
/// To calculate the gradient.
Real mGradientOff;
/// The initial seed.
long mSeed;
/// Prepares the node members.
void setData(void);
/* Gets the density value.
@param position
The position of the value.
@return
The value.
*/
inline Real getInternalValue(const Vector3 &position) const
{
Real toAdd = (Real)0.0;
for (size_t i = 0; i < mNumOctaves; ++i)
{
toAdd += mNoise.noise(position.x * mFrequencies[i], position.y * mFrequencies[i], position.z * mFrequencies[i]) * mAmplitudes[i];
}
return mSrc->getValue(position) + toAdd;
}
public:
/** Constructor.
@param src
The source to add the noise to.
@param frequencies
The frequencies of the added noise octaves.
@param amplitudes
The amplitudes of the added noise octaves.
@param numOctaves
The amount of octaves.
@param seed
The seed to initialize the random number generator with.
*/
CSGNoiseSource(const Source *src, Real *frequencies, Real *amplitudes, size_t numOctaves, long seed);
/** Constructor with current time as seed.
@param src
The source to add the noise to.
@param frequencies
The frequencies of the added noise octaves.
@param amplitudes
The amplitudes of the added noise octaves.
@param numOctaves
The amount of octaves.
*/
CSGNoiseSource(const Source *src, Real *frequencies, Real *amplitudes, size_t numOctaves);
/** Overridden from Source.
*/
virtual Vector4 getValueAndGradient(const Vector3 &position) const;
/** Overridden from Source.
*/
virtual Real getValue(const Vector3 &position) const;
/** Gets the initial seed.
@return
The initial seed.
*/
long getSeed(void) const;
};
}
}
#endif
|