1 | /* |
---|
2 | orxonox - the future of 3D-vertical-scrollers |
---|
3 | |
---|
4 | Copyright (C) 2004 orx |
---|
5 | |
---|
6 | This program is free software; you can redistribute it and/or modify |
---|
7 | it under the terms of the GNU General Public License as published by |
---|
8 | the Free Software Foundation; either version 2, or (at your option) |
---|
9 | any later version. |
---|
10 | |
---|
11 | ### File Specific: |
---|
12 | main-programmer: bottac@ee.ethz.ch |
---|
13 | */ |
---|
14 | |
---|
15 | #include "height_map.h" |
---|
16 | #include "model.h" |
---|
17 | #include "texture.h" |
---|
18 | #include "vector.h" |
---|
19 | #include "material.h" |
---|
20 | #include "p_node.h" |
---|
21 | #include "state.h" |
---|
22 | #include "resource_manager.h" |
---|
23 | #include "debug.h" |
---|
24 | |
---|
25 | // INCLUDING SDL_Image |
---|
26 | #ifdef HAVE_SDL_IMAGE_H |
---|
27 | #include <SDL_image.h> |
---|
28 | #else |
---|
29 | #include <SDL/SDL_image.h> |
---|
30 | #endif |
---|
31 | |
---|
32 | Tile::Tile(int i1, int j1, int i2, int j2, HeightMap* hm ) |
---|
33 | { |
---|
34 | |
---|
35 | PRINTF(0)("Tile Constructor\n"); |
---|
36 | highResModel = new VertexArrayModel(); |
---|
37 | lowResModel = new VertexArrayModel(); |
---|
38 | |
---|
39 | this->load(i1,j1,i2,j2,hm,highResModel,4); |
---|
40 | this->load(i1,j1,i2,j2,hm,lowResModel, 8); |
---|
41 | } |
---|
42 | |
---|
43 | Tile::Tile() |
---|
44 | { |
---|
45 | PRINTF(0)("ooops *********************************************************************************************************************************************************************************************************** \n"); |
---|
46 | } |
---|
47 | |
---|
48 | Tile::~Tile() |
---|
49 | { |
---|
50 | delete highResModel; |
---|
51 | delete lowResModel; |
---|
52 | } |
---|
53 | |
---|
54 | void Tile::draw() |
---|
55 | { |
---|
56 | // This Draws the LOD's |
---|
57 | //FIXME |
---|
58 | float cameraDistance = (State::getCamera()->getAbsCoor() - Vector(this->x, hmref->offsetY , this->z) ).len(); |
---|
59 | if(cameraDistance < 0) cameraDistance = -cameraDistance; |
---|
60 | if(cameraDistance > 5000 ) |
---|
61 | { |
---|
62 | return; |
---|
63 | } |
---|
64 | else if (cameraDistance >= 1000 ) |
---|
65 | { |
---|
66 | this->drawLowRes(); |
---|
67 | } |
---|
68 | else |
---|
69 | { |
---|
70 | this->drawHighRes(); |
---|
71 | } |
---|
72 | } |
---|
73 | |
---|
74 | void Tile::drawHighRes() |
---|
75 | { |
---|
76 | highResModel->draw(); |
---|
77 | } |
---|
78 | |
---|
79 | void Tile::drawLowRes() |
---|
80 | { |
---|
81 | lowResModel->draw(); |
---|
82 | } |
---|
83 | |
---|
84 | /* |
---|
85 | */ |
---|
86 | void Tile::load(int i1, int j1, int i2, int j2, HeightMap* hm, VertexArrayModel* model, int Res) |
---|
87 | { |
---|
88 | |
---|
89 | #define heightMap hm->heightMap |
---|
90 | #define colours hm->colours |
---|
91 | #define scaleX hm->scaleX |
---|
92 | #define scaleY hm->scaleY |
---|
93 | #define scaleZ hm->scaleZ |
---|
94 | #define shiftX hm->shiftX |
---|
95 | #define shiftY hm->shiftY |
---|
96 | #define shiftZ hm->shiftZ |
---|
97 | #define normalVectorField hm->normalVectorField |
---|
98 | |
---|
99 | hmref = hm; // FIXME |
---|
100 | |
---|
101 | this->x = hm->offsetX + (heightMap->h - ((i1+i2)/2))*scaleX; |
---|
102 | this->z = hm->offsetZ + ((j1 + j2 )/2 ) * scaleZ; |
---|
103 | |
---|
104 | int sampleRate = Res; |
---|
105 | |
---|
106 | float height = 0; |
---|
107 | int offset = 0; |
---|
108 | |
---|
109 | float r = 0.0; |
---|
110 | float g = 0.0; |
---|
111 | float b = 0.0; |
---|
112 | |
---|
113 | |
---|
114 | |
---|
115 | |
---|
116 | if(heightMap != NULL && heightMap->format->BitsPerPixel == 8 ) |
---|
117 | |
---|
118 | SDL_LockSurface(heightMap); |
---|
119 | SDL_LockSurface(hm->colourMap); |
---|
120 | |
---|
121 | for(int i = i1 ; i <= i2 ; i +=sampleRate) |
---|
122 | { |
---|
123 | int w = 0; |
---|
124 | |
---|
125 | |
---|
126 | |
---|
127 | if(hm->hasColourMap) |
---|
128 | { |
---|
129 | r = colours[(3*w+2 + 3*i*(heightMap->w )) ]; |
---|
130 | g = colours[(3*w+1 + 3*i*(heightMap->w)) ]; |
---|
131 | b = colours[(3*w+0 + 3*i*(heightMap->w))]; |
---|
132 | } |
---|
133 | |
---|
134 | w = j1; |
---|
135 | model->addVertex(scaleX*(heightMap->h -i)+ shiftX,shiftY,scaleZ*(w)+ shiftZ); // Top Right |
---|
136 | model->addNormal(normalVectorField[i % heightMap->h][w % heightMap->w].y,normalVectorField[i % heightMap->h][w % heightMap->w].z,normalVectorField[i % heightMap->h][w % heightMap->w].x); |
---|
137 | model->addTexCoor((float)(j1-sampleRate) /(texRate), (float)(i %heightMap->h)/(texRate)); |
---|
138 | |
---|
139 | model->addColor(r/255.0,g/255.0,b/255.0); |
---|
140 | |
---|
141 | for(int j = j1 ; j <= j2 ; j += sampleRate) |
---|
142 | { |
---|
143 | |
---|
144 | |
---|
145 | // To be fixed |
---|
146 | if(hm->hasColourMap) |
---|
147 | { |
---|
148 | r = colours[(3*j+2 + 3*i*(heightMap->w )) ]; |
---|
149 | g = colours[(3*j+1 + 3*i*(heightMap->w)) ]; |
---|
150 | b = colours[(3*j+0 + 3*i*(heightMap->w))]; |
---|
151 | } |
---|
152 | height = (float)(unsigned char) hm->heights[(j +sampleRate+ i*(heightMap->w )) ]; |
---|
153 | height += (float)(unsigned char) hm->heights[(j+ 1 + sampleRate + (i+1)*(heightMap->w )) ]; |
---|
154 | height += (float) (unsigned char) hm->heights[(j -1+ sampleRate + (i+1)*(heightMap->w ))]; |
---|
155 | height += (float)(unsigned char)hm->heights[(j +sampleRate+ (i+2)*(heightMap->w )) ]; |
---|
156 | height += (float)(unsigned char)hm->heights[(j+sampleRate + (i)*(heightMap->w )) ]; |
---|
157 | height=height/5.0; |
---|
158 | |
---|
159 | model->addVertex(scaleX*(heightMap->h -i) + shiftX ,((double)(height)*scaleY) + shiftY ,scaleZ*(j) + shiftZ); // Top Right |
---|
160 | model->addNormal(normalVectorField[i % heightMap->h][j % heightMap->w].y,normalVectorField[i % heightMap->h][j % heightMap->w].z,normalVectorField[i % heightMap->h][j % heightMap->w].x); |
---|
161 | model->addTexCoor((float)(j) /(texRate), (float)(i %heightMap->h)/(texRate)); |
---|
162 | |
---|
163 | //PRINTF(0)("TexCoord: %f %f \n",(float)j / 100.0, (float)(i %heightMap->h)/100.0); |
---|
164 | |
---|
165 | model->addColor(r/255.0,g/255.0,b/255.0); |
---|
166 | w = j; |
---|
167 | } |
---|
168 | |
---|
169 | |
---|
170 | model->addVertex(scaleX*(heightMap->h -i)+ shiftX,shiftY,scaleZ*(w)+ shiftZ); // Top Right |
---|
171 | model->addNormal(normalVectorField[i % heightMap->h][w % heightMap->w].y,normalVectorField[i % heightMap->h][w % heightMap->w].z,normalVectorField[i% heightMap->h][w % heightMap->w].x); |
---|
172 | model->addTexCoor((float)(j2+sampleRate) /(texRate), (float)(i %heightMap->h)/(texRate)); |
---|
173 | model->addColor(r/255.0,g/255.0,b/255.0); |
---|
174 | |
---|
175 | } |
---|
176 | |
---|
177 | |
---|
178 | |
---|
179 | |
---|
180 | |
---|
181 | SDL_UnlockSurface(heightMap); |
---|
182 | int cnt = 0; |
---|
183 | for(int i = i1 ; i < i2 ; i +=sampleRate) |
---|
184 | { |
---|
185 | |
---|
186 | for(int j = j1-sampleRate ; j < j2 + 2*sampleRate ; j += sampleRate) |
---|
187 | { |
---|
188 | |
---|
189 | model->addIndice(cnt); |
---|
190 | model->addIndice(cnt + (j2 -j1 + 3* sampleRate )/ sampleRate ); |
---|
191 | cnt++; |
---|
192 | |
---|
193 | } |
---|
194 | |
---|
195 | |
---|
196 | |
---|
197 | model->newStripe(); |
---|
198 | |
---|
199 | |
---|
200 | } |
---|
201 | cnt += (j2 -j1 + 3* sampleRate)/ sampleRate; |
---|
202 | |
---|
203 | for(int j = j1 ; j <= j2 ; j += sampleRate) |
---|
204 | { |
---|
205 | int i = i1; |
---|
206 | |
---|
207 | // To be fixed |
---|
208 | if(hm->hasColourMap) |
---|
209 | { |
---|
210 | r = (float)colours[(3*j+2 + 3*i*(heightMap->w )) ]; |
---|
211 | g = (float)colours[(3*j+1 + 3*i*(heightMap->w)) ]; |
---|
212 | b = (float)colours[(3*j+0 + 3*i*(heightMap->w))]; |
---|
213 | } |
---|
214 | |
---|
215 | model->addVertex(scaleX*(heightMap->h -i) + shiftX , shiftY ,scaleZ*(j) + shiftZ); // Top Right |
---|
216 | model->addNormal(normalVectorField[i % heightMap->h][j % heightMap->w].y,normalVectorField[i % heightMap->h][j % heightMap->w].z,normalVectorField[i % heightMap->h][j % heightMap->w].x); |
---|
217 | model->addTexCoor((float)j /(texRate), (float)((i - sampleRate) %heightMap->h)/(texRate)); |
---|
218 | model->addColor(r/255.0,g/255.0,b/255.0); |
---|
219 | |
---|
220 | } |
---|
221 | |
---|
222 | for(int j = j1 ; j <= j2 ; j += sampleRate) |
---|
223 | { |
---|
224 | int i = i1; |
---|
225 | height = (float)(unsigned char) hm->heights[(j +sampleRate+ i*(heightMap->w )) ]; |
---|
226 | height += (float)(unsigned char) hm->heights[(j+ 1 + sampleRate + (i+1)*(heightMap->w )) ]; |
---|
227 | height += (float) (unsigned char) hm->heights[(j -1+ sampleRate + (i+1)*(heightMap->w ))]; |
---|
228 | height += (float)(unsigned char)hm->heights[(j +sampleRate+ (i+2)*(heightMap->w )) ]; |
---|
229 | height += (float)(unsigned char)hm->heights[(j+sampleRate + (i)*(heightMap->w )) ]; |
---|
230 | height=height/5.0; |
---|
231 | |
---|
232 | model->addVertex(scaleX*(heightMap->h -i) + shiftX , ((double)(height)*scaleY) +shiftY ,scaleZ*(j) + shiftZ); // Top Right |
---|
233 | model->addNormal(normalVectorField[i % heightMap->h][j % heightMap->w].y,normalVectorField[i % heightMap->h][j% heightMap->w].z,normalVectorField[i%heightMap->h][j%heightMap->w].x); |
---|
234 | model->addTexCoor((float)j /(texRate), (float)(i %heightMap->h)/(texRate)); |
---|
235 | model->addColor(r/255.0,g/255.0,b/255.0); |
---|
236 | |
---|
237 | } |
---|
238 | |
---|
239 | |
---|
240 | |
---|
241 | for(int j = j1 ; j <= j2 ; j += sampleRate) |
---|
242 | { |
---|
243 | int i = i2; |
---|
244 | |
---|
245 | // To be fixed |
---|
246 | if(hm->hasColourMap) |
---|
247 | { |
---|
248 | r = (float)colours[3*j+2 + 3*i*(heightMap->w )]; |
---|
249 | g = (float)colours[3*j+1 + 3*i*(heightMap->w)]; |
---|
250 | b = (float)colours[3*j+0 + 3*i*(heightMap->w)]; |
---|
251 | } |
---|
252 | |
---|
253 | model->addVertex(scaleX*(heightMap->h -i) + shiftX , shiftY ,scaleZ*(j) + shiftZ); // Top Right |
---|
254 | model->addNormal(normalVectorField[i%heightMap->h][j%heightMap->w].y,normalVectorField[i%heightMap->h][j%heightMap->w].z,normalVectorField[i%heightMap->h][j%heightMap->w].x); |
---|
255 | model->addTexCoor((float)j /(texRate), (float)((i+ sampleRate) %heightMap->h)/(texRate)); |
---|
256 | model->addColor(r/255.0,g/255.0,b/255.0); |
---|
257 | |
---|
258 | } |
---|
259 | |
---|
260 | |
---|
261 | for(int j = j1 ; j <= j2 ; j += sampleRate) |
---|
262 | { |
---|
263 | int i = i2; |
---|
264 | height = (float)(unsigned char) hm->heights[(j +sampleRate+ i*(heightMap->w )) ]; |
---|
265 | height += (float)(unsigned char) hm->heights[(j+ 1 + sampleRate + (i+1)*(heightMap->w )) ]; |
---|
266 | height += (float) (unsigned char) hm->heights[(j -1+ sampleRate + (i+1)*(heightMap->w ))]; |
---|
267 | height += (float)(unsigned char)hm->heights[(j +sampleRate+ (i+2)*(heightMap->w ))]; |
---|
268 | height += (float)(unsigned char)hm->heights[(j+sampleRate + (i)*(heightMap->w )) ]; |
---|
269 | height=height/5.0; |
---|
270 | model->addVertex(scaleX*(heightMap->h -i) + shiftX , ((double)(height)*scaleY) +shiftY ,scaleZ*(j) + shiftZ); // Top Right |
---|
271 | model->addNormal(normalVectorField[i%heightMap->h][j%heightMap->w].y,normalVectorField[i%heightMap->h][j%heightMap->w].z,normalVectorField[i%heightMap->h][j%heightMap->w].x); |
---|
272 | model->addTexCoor((float)j /(texRate), (float)(i %heightMap->h)/(texRate)); |
---|
273 | model->addColor(r/255.0,g/255.0,b/255.0); |
---|
274 | |
---|
275 | } |
---|
276 | |
---|
277 | |
---|
278 | |
---|
279 | |
---|
280 | // link Boarder Stripe |
---|
281 | for(int j = j1-sampleRate ; j < j2 ; j += sampleRate) |
---|
282 | { |
---|
283 | |
---|
284 | model->addIndice(cnt); |
---|
285 | model->addIndice(cnt + (j2 -j1 + sampleRate )/ sampleRate ); |
---|
286 | cnt++; |
---|
287 | |
---|
288 | } |
---|
289 | |
---|
290 | cnt++; |
---|
291 | |
---|
292 | model->newStripe(); |
---|
293 | |
---|
294 | |
---|
295 | |
---|
296 | |
---|
297 | |
---|
298 | cnt += (j2-j1)/ sampleRate; |
---|
299 | |
---|
300 | // link 2nd BoarderStripe |
---|
301 | for(int j = j1-sampleRate ; j < j2 ; j += sampleRate) |
---|
302 | { |
---|
303 | |
---|
304 | model->addIndice(cnt); |
---|
305 | model->addIndice(cnt + (j2 -j1 + sampleRate )/ sampleRate ); |
---|
306 | cnt++; |
---|
307 | |
---|
308 | } |
---|
309 | |
---|
310 | |
---|
311 | SDL_UnlockSurface(hm->colourMap); |
---|
312 | |
---|
313 | model->finalize(); |
---|
314 | |
---|
315 | |
---|
316 | |
---|
317 | |
---|
318 | #undef heightMap |
---|
319 | #undef colours |
---|
320 | #undef scaleX |
---|
321 | #undef scaleY |
---|
322 | #undef scaleZ |
---|
323 | #undef shiftX |
---|
324 | #undef shiftY |
---|
325 | #undef shiftZ |
---|
326 | #undef normalVectorField |
---|
327 | |
---|
328 | } |
---|
329 | |
---|
330 | HeightMap::HeightMap() |
---|
331 | { |
---|
332 | |
---|
333 | } |
---|
334 | |
---|
335 | HeightMap::HeightMap(const char* height_map_name = NULL) : VertexArrayModel() |
---|
336 | { |
---|
337 | this->setClassID(CL_HEIGHT_MAP, "HeightMap"); |
---|
338 | heightMap = IMG_Load(height_map_name); |
---|
339 | if(heightMap!=NULL) { |
---|
340 | |
---|
341 | PRINTF(0)("loading Image %s\n", height_map_name); |
---|
342 | PRINTF(0)("width : %i\n", heightMap->w); |
---|
343 | PRINTF(0)("height : %i\n", heightMap->h); |
---|
344 | PRINTF(0)("%i Byte(s) per Pixel \n", heightMap->format->BytesPerPixel); |
---|
345 | PRINTF(0)("Rshift : %i\n", heightMap->format->Rshift); |
---|
346 | PRINTF(0)("Bshift: %i\n", heightMap->format->Bshift); |
---|
347 | PRINTF(0)("Gshift: %i\n", heightMap->format->Gshift); |
---|
348 | PRINTF(0)("Rmask: %i\n", heightMap->format->Rmask); |
---|
349 | PRINTF(0)("Gmask: %i\n", heightMap->format->Gmask); |
---|
350 | } |
---|
351 | |
---|
352 | else PRINTF(4)("oops! couldn't load %s for some reason.\n", height_map_name); |
---|
353 | |
---|
354 | |
---|
355 | generateNormalVectorField(); |
---|
356 | |
---|
357 | shiftX = 0; |
---|
358 | shiftY = 0; |
---|
359 | shiftZ = 0; |
---|
360 | |
---|
361 | } |
---|
362 | |
---|
363 | HeightMap::HeightMap(const char* height_map_name = NULL, const char* colour_map_name = NULL) : VertexArrayModel() |
---|
364 | { |
---|
365 | this->setClassID(CL_HEIGHT_MAP, "HeightMap"); |
---|
366 | |
---|
367 | heightMap = IMG_Load(height_map_name); |
---|
368 | if(heightMap!=NULL) { |
---|
369 | |
---|
370 | PRINTF(0)("loading Image %s\n", height_map_name); |
---|
371 | PRINTF(0)("width : %i\n", heightMap->w); |
---|
372 | PRINTF(0)("height : %i\n", heightMap->h); |
---|
373 | PRINTF(0)("%i Byte(s) per Pixel \n", heightMap->format->BytesPerPixel); |
---|
374 | PRINTF(0)("Rshift : %i\n", heightMap->format->Rshift); |
---|
375 | PRINTF(0)("Bshift: %i\n", heightMap->format->Bshift); |
---|
376 | PRINTF(0)("Gshift: %i\n", heightMap->format->Gshift); |
---|
377 | PRINTF(0)("Rmask: %i\n", heightMap->format->Rmask); |
---|
378 | PRINTF(0)("Gmask: %i\n", heightMap->format->Gmask); |
---|
379 | } |
---|
380 | |
---|
381 | else PRINTF(4)("oops! couldn't load %s for some reason.\n", height_map_name); |
---|
382 | |
---|
383 | |
---|
384 | generateNormalVectorField(); |
---|
385 | |
---|
386 | colourMap=NULL; |
---|
387 | if(colour_map_name != NULL) |
---|
388 | { |
---|
389 | colourMap = IMG_Load(colour_map_name); |
---|
390 | } |
---|
391 | |
---|
392 | if(colourMap != NULL) |
---|
393 | { |
---|
394 | PRINTF(0)("loading Image %s\n", colour_map_name); |
---|
395 | PRINTF(0)("width : %i\n", colourMap->w); |
---|
396 | PRINTF(0)("height : %i\n", colourMap->h); |
---|
397 | PRINTF(0)("%i Byte(s) per Pixel \n", colourMap->format->BytesPerPixel); |
---|
398 | PRINTF(0)("Rshift : %i\n", colourMap->format->Rshift); |
---|
399 | PRINTF(0)("Bshift: %i\n", colourMap->format->Bshift); |
---|
400 | PRINTF(0)("Gshift: %i\n", colourMap->format->Gshift); |
---|
401 | PRINTF(0)("Rmask: %i\n", colourMap->format->Rmask); |
---|
402 | PRINTF(0)("Gmask: %i\n", colourMap->format->Gmask); |
---|
403 | } |
---|
404 | else PRINTF(0)("oops! couldn't load colorMap for some reason.\n"); |
---|
405 | |
---|
406 | |
---|
407 | |
---|
408 | if(colourMap != NULL) |
---|
409 | { |
---|
410 | colours = (unsigned char *) colourMap->pixels; |
---|
411 | hasColourMap = true; |
---|
412 | } |
---|
413 | else hasColourMap = false; |
---|
414 | |
---|
415 | |
---|
416 | heights = (unsigned char*) heightMap->pixels; |
---|
417 | shiftX = 0; |
---|
418 | shiftY = 0; |
---|
419 | shiftZ = 0; |
---|
420 | } |
---|
421 | |
---|
422 | |
---|
423 | HeightMap::~HeightMap() |
---|
424 | { |
---|
425 | delete heightMap; |
---|
426 | delete colourMap; |
---|
427 | |
---|
428 | |
---|
429 | for(int i=0;i < heightMap->h/tileSize ; i++) |
---|
430 | { |
---|
431 | for(int j = 0; j < heightMap->w/ tileSize; j++) |
---|
432 | { |
---|
433 | delete tiles [i][j]; |
---|
434 | } |
---|
435 | } |
---|
436 | for(int i=0;i < heightMap->h/tileSize ; i++) |
---|
437 | delete[] tiles[i]; |
---|
438 | delete[] tiles; |
---|
439 | |
---|
440 | |
---|
441 | |
---|
442 | |
---|
443 | |
---|
444 | for(int i=0;i<heightMap->h;i++) |
---|
445 | delete[] normalVectorField [i]; |
---|
446 | delete[] normalVectorField; |
---|
447 | |
---|
448 | |
---|
449 | |
---|
450 | |
---|
451 | |
---|
452 | |
---|
453 | |
---|
454 | } |
---|
455 | |
---|
456 | void HeightMap::load() |
---|
457 | { |
---|
458 | |
---|
459 | //Create a Dynamicly sized 2D-Array for Tiles |
---|
460 | tiles = new Tile** [heightMap->h/tileSize]; |
---|
461 | for(int i=0;i < heightMap->h/tileSize ; i++) |
---|
462 | tiles [i]= new (Tile* [heightMap->w /tileSize ]); |
---|
463 | |
---|
464 | //SetUp Arrays |
---|
465 | for(int i = 0; i < (heightMap->h )/ tileSize; i ++) |
---|
466 | { |
---|
467 | for(int j = 0; j < (heightMap->w )/ tileSize; j ++) |
---|
468 | { |
---|
469 | |
---|
470 | tiles[i][j] = new Tile( i*tileSize , j*tileSize , (i+1)*tileSize, (j+1)*tileSize , this ) ; |
---|
471 | } |
---|
472 | } |
---|
473 | |
---|
474 | } |
---|
475 | |
---|
476 | |
---|
477 | void HeightMap::draw() |
---|
478 | { |
---|
479 | const PNode* camera = State::getCamera(); |
---|
480 | Vector v = camera->getAbsCoor(); |
---|
481 | |
---|
482 | int i_min = 0; |
---|
483 | int i_max = (heightMap->h )/ tileSize; |
---|
484 | int j_min = 0; |
---|
485 | int j_max= (heightMap->w ) / tileSize; |
---|
486 | |
---|
487 | |
---|
488 | |
---|
489 | for(int i = 0; i < i_max ; i ++) |
---|
490 | { |
---|
491 | for(int j = 0; j < j_max ; j++) |
---|
492 | { |
---|
493 | tiles[i][j]->draw(); |
---|
494 | } |
---|
495 | } |
---|
496 | |
---|
497 | } |
---|
498 | void HeightMap::generateNormalVectorField() |
---|
499 | { |
---|
500 | int delta = 1; |
---|
501 | heights = (unsigned char*) heightMap->pixels; |
---|
502 | |
---|
503 | //Create a Dynamicly sized 2D-Array to store our normals |
---|
504 | normalVectorField = new Vector* [heightMap->h]; |
---|
505 | for(int i=0;i<heightMap->h;i++) |
---|
506 | normalVectorField [i]= new (Vector [heightMap->w]); |
---|
507 | |
---|
508 | |
---|
509 | |
---|
510 | |
---|
511 | // Initialize |
---|
512 | for(int i=0; i< heightMap->h; i++) |
---|
513 | { |
---|
514 | for(int j = 0; j> heightMap->w; j++) |
---|
515 | { |
---|
516 | Vector v = Vector(0.0, 1.0, 0.0); |
---|
517 | normalVectorField[i][j] = v; |
---|
518 | } |
---|
519 | } |
---|
520 | |
---|
521 | // !!! Does not yet calculate the normals of some border points!!!!! |
---|
522 | |
---|
523 | if(heightMap != NULL && heightMap->format->BitsPerPixel == 8 ) |
---|
524 | { |
---|
525 | SDL_LockSurface(heightMap); |
---|
526 | for(int i = 0 ; i < heightMap->h - 1 ; i ++) |
---|
527 | { |
---|
528 | for(int j = 0; j < heightMap->w - 1 ; j ++) |
---|
529 | { |
---|
530 | |
---|
531 | |
---|
532 | delta = (int)heights[j + (i+1)*(heightMap->w )] - (int) heights[j + i*(heightMap->w )]; |
---|
533 | Vector a = Vector(-scaleX,(float)delta*scaleY ,0.0f); |
---|
534 | |
---|
535 | delta = (int)heights[j+1 + i*(heightMap->w )] - (int)heights[j + i*(heightMap->w )]; |
---|
536 | Vector b = Vector(0.0f,(float) delta*scaleY ,scaleZ); |
---|
537 | |
---|
538 | |
---|
539 | normalVectorField[i][j] = b.cross(a); |
---|
540 | normalVectorField[i][j].normalize(); |
---|
541 | |
---|
542 | } |
---|
543 | } |
---|
544 | SDL_UnlockSurface(heightMap); |
---|
545 | |
---|
546 | } |
---|
547 | |
---|
548 | |
---|
549 | |
---|
550 | |
---|
551 | } |
---|
552 | |
---|
553 | |
---|
554 | void HeightMap::scale(Vector v) |
---|
555 | { |
---|
556 | scaleX = v.x; |
---|
557 | scaleY = v.y; |
---|
558 | scaleZ = v.z; |
---|
559 | generateNormalVectorField(); |
---|
560 | } |
---|
561 | |
---|
562 | void HeightMap::setAbsCoor(Vector v) |
---|
563 | { |
---|
564 | offsetX = v.x; |
---|
565 | offsetY = v.y; |
---|
566 | offsetZ = v.z; |
---|
567 | } |
---|
568 | |
---|
569 | |
---|
570 | float HeightMap::getHeight(float x, float y) |
---|
571 | { |
---|
572 | |
---|
573 | x -= offsetX; |
---|
574 | y -= offsetZ; |
---|
575 | |
---|
576 | |
---|
577 | int xInt = (int)x / scaleX; x -= (float)((int)x); xInt = heightMap->h - xInt; |
---|
578 | int yInt = (int)y / scaleZ; y -= (float) ((int) y); /*yInt = heightMap->w - yInt;*/ |
---|
579 | |
---|
580 | //PRINTF(0)("xInt: %i, yInt: %i, x: %f, y: %f\n", xInt, yInt, x, y); |
---|
581 | |
---|
582 | if(xInt <= 0 || xInt >= heightMap->h || yInt <= 0 || yInt >= heightMap->w ) return 0; |
---|
583 | if( y >= 0.5*x) |
---|
584 | { |
---|
585 | // Check for ... |
---|
586 | } |
---|
587 | |
---|
588 | float height = heights[yInt + (xInt)*heightMap->w]*scaleY; |
---|
589 | |
---|
590 | |
---|
591 | float a = normalVectorField[(xInt)][yInt].x; |
---|
592 | float b = normalVectorField [(xInt)][yInt].z; |
---|
593 | float c = normalVectorField [(xInt)][yInt].y; |
---|
594 | |
---|
595 | PRINTF(0)("a: %f \n" ,a); |
---|
596 | PRINTF(0)("b: %f \n" ,b); |
---|
597 | PRINTF(0)("c: %f \n" ,c); |
---|
598 | |
---|
599 | height -= ( (a/c)*(x) + (b/c)*(y)); |
---|
600 | |
---|
601 | PRINTF(0)("height: %f \n" ,height ); |
---|
602 | return (height + offsetZ); |
---|
603 | } |
---|