1 | namespace glm |
2 | { |
3 | template<typename T> |
4 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> ortho(T left, T right, T bottom, T top) |
5 | { |
6 | mat<4, 4, T, defaultp> Result(static_cast<T>(1)); |
7 | Result[0][0] = static_cast<T>(2) / (right - left); |
8 | Result[1][1] = static_cast<T>(2) / (top - bottom); |
9 | Result[2][2] = - static_cast<T>(1); |
10 | Result[3][0] = - (right + left) / (right - left); |
11 | Result[3][1] = - (top + bottom) / (top - bottom); |
12 | return Result; |
13 | } |
14 | |
15 | template<typename T> |
16 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoLH_ZO(T left, T right, T bottom, T top, T zNear, T zFar) |
17 | { |
18 | mat<4, 4, T, defaultp> Result(1); |
19 | Result[0][0] = static_cast<T>(2) / (right - left); |
20 | Result[1][1] = static_cast<T>(2) / (top - bottom); |
21 | Result[2][2] = static_cast<T>(1) / (zFar - zNear); |
22 | Result[3][0] = - (right + left) / (right - left); |
23 | Result[3][1] = - (top + bottom) / (top - bottom); |
24 | Result[3][2] = - zNear / (zFar - zNear); |
25 | return Result; |
26 | } |
27 | |
28 | template<typename T> |
29 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoLH_NO(T left, T right, T bottom, T top, T zNear, T zFar) |
30 | { |
31 | mat<4, 4, T, defaultp> Result(1); |
32 | Result[0][0] = static_cast<T>(2) / (right - left); |
33 | Result[1][1] = static_cast<T>(2) / (top - bottom); |
34 | Result[2][2] = static_cast<T>(2) / (zFar - zNear); |
35 | Result[3][0] = - (right + left) / (right - left); |
36 | Result[3][1] = - (top + bottom) / (top - bottom); |
37 | Result[3][2] = - (zFar + zNear) / (zFar - zNear); |
38 | return Result; |
39 | } |
40 | |
41 | template<typename T> |
42 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoRH_ZO(T left, T right, T bottom, T top, T zNear, T zFar) |
43 | { |
44 | mat<4, 4, T, defaultp> Result(1); |
45 | Result[0][0] = static_cast<T>(2) / (right - left); |
46 | Result[1][1] = static_cast<T>(2) / (top - bottom); |
47 | Result[2][2] = - static_cast<T>(1) / (zFar - zNear); |
48 | Result[3][0] = - (right + left) / (right - left); |
49 | Result[3][1] = - (top + bottom) / (top - bottom); |
50 | Result[3][2] = - zNear / (zFar - zNear); |
51 | return Result; |
52 | } |
53 | |
54 | template<typename T> |
55 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoRH_NO(T left, T right, T bottom, T top, T zNear, T zFar) |
56 | { |
57 | mat<4, 4, T, defaultp> Result(1); |
58 | Result[0][0] = static_cast<T>(2) / (right - left); |
59 | Result[1][1] = static_cast<T>(2) / (top - bottom); |
60 | Result[2][2] = - static_cast<T>(2) / (zFar - zNear); |
61 | Result[3][0] = - (right + left) / (right - left); |
62 | Result[3][1] = - (top + bottom) / (top - bottom); |
63 | Result[3][2] = - (zFar + zNear) / (zFar - zNear); |
64 | return Result; |
65 | } |
66 | |
67 | template<typename T> |
68 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoZO(T left, T right, T bottom, T top, T zNear, T zFar) |
69 | { |
70 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT |
71 | return orthoLH_ZO(left, right, bottom, top, zNear, zFar); |
72 | # else |
73 | return orthoRH_ZO(left, right, bottom, top, zNear, zFar); |
74 | # endif |
75 | } |
76 | |
77 | template<typename T> |
78 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoNO(T left, T right, T bottom, T top, T zNear, T zFar) |
79 | { |
80 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT |
81 | return orthoLH_NO(left, right, bottom, top, zNear, zFar); |
82 | # else |
83 | return orthoRH_NO(left, right, bottom, top, zNear, zFar); |
84 | # endif |
85 | } |
86 | |
87 | template<typename T> |
88 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoLH(T left, T right, T bottom, T top, T zNear, T zFar) |
89 | { |
90 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT |
91 | return orthoLH_ZO(left, right, bottom, top, zNear, zFar); |
92 | # else |
93 | return orthoLH_NO(left, right, bottom, top, zNear, zFar); |
94 | # endif |
95 | |
96 | } |
97 | |
98 | template<typename T> |
99 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoRH(T left, T right, T bottom, T top, T zNear, T zFar) |
100 | { |
101 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT |
102 | return orthoRH_ZO(left, right, bottom, top, zNear, zFar); |
103 | # else |
104 | return orthoRH_NO(left, right, bottom, top, zNear, zFar); |
105 | # endif |
106 | } |
107 | |
108 | template<typename T> |
109 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> ortho(T left, T right, T bottom, T top, T zNear, T zFar) |
110 | { |
111 | # if GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_ZO |
112 | return orthoLH_ZO(left, right, bottom, top, zNear, zFar); |
113 | # elif GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_NO |
114 | return orthoLH_NO(left, right, bottom, top, zNear, zFar); |
115 | # elif GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_ZO |
116 | return orthoRH_ZO(left, right, bottom, top, zNear, zFar); |
117 | # elif GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_NO |
118 | return orthoRH_NO(left, right, bottom, top, zNear, zFar); |
119 | # endif |
120 | } |
121 | |
122 | template<typename T> |
123 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumLH_ZO(T left, T right, T bottom, T top, T nearVal, T farVal) |
124 | { |
125 | mat<4, 4, T, defaultp> Result(0); |
126 | Result[0][0] = (static_cast<T>(2) * nearVal) / (right - left); |
127 | Result[1][1] = (static_cast<T>(2) * nearVal) / (top - bottom); |
128 | Result[2][0] = (right + left) / (right - left); |
129 | Result[2][1] = (top + bottom) / (top - bottom); |
130 | Result[2][2] = farVal / (farVal - nearVal); |
131 | Result[2][3] = static_cast<T>(1); |
132 | Result[3][2] = -(farVal * nearVal) / (farVal - nearVal); |
133 | return Result; |
134 | } |
135 | |
136 | template<typename T> |
137 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumLH_NO(T left, T right, T bottom, T top, T nearVal, T farVal) |
138 | { |
139 | mat<4, 4, T, defaultp> Result(0); |
140 | Result[0][0] = (static_cast<T>(2) * nearVal) / (right - left); |
141 | Result[1][1] = (static_cast<T>(2) * nearVal) / (top - bottom); |
142 | Result[2][0] = (right + left) / (right - left); |
143 | Result[2][1] = (top + bottom) / (top - bottom); |
144 | Result[2][2] = (farVal + nearVal) / (farVal - nearVal); |
145 | Result[2][3] = static_cast<T>(1); |
146 | Result[3][2] = - (static_cast<T>(2) * farVal * nearVal) / (farVal - nearVal); |
147 | return Result; |
148 | } |
149 | |
150 | template<typename T> |
151 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumRH_ZO(T left, T right, T bottom, T top, T nearVal, T farVal) |
152 | { |
153 | mat<4, 4, T, defaultp> Result(0); |
154 | Result[0][0] = (static_cast<T>(2) * nearVal) / (right - left); |
155 | Result[1][1] = (static_cast<T>(2) * nearVal) / (top - bottom); |
156 | Result[2][0] = (right + left) / (right - left); |
157 | Result[2][1] = (top + bottom) / (top - bottom); |
158 | Result[2][2] = farVal / (nearVal - farVal); |
159 | Result[2][3] = static_cast<T>(-1); |
160 | Result[3][2] = -(farVal * nearVal) / (farVal - nearVal); |
161 | return Result; |
162 | } |
163 | |
164 | template<typename T> |
165 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumRH_NO(T left, T right, T bottom, T top, T nearVal, T farVal) |
166 | { |
167 | mat<4, 4, T, defaultp> Result(0); |
168 | Result[0][0] = (static_cast<T>(2) * nearVal) / (right - left); |
169 | Result[1][1] = (static_cast<T>(2) * nearVal) / (top - bottom); |
170 | Result[2][0] = (right + left) / (right - left); |
171 | Result[2][1] = (top + bottom) / (top - bottom); |
172 | Result[2][2] = - (farVal + nearVal) / (farVal - nearVal); |
173 | Result[2][3] = static_cast<T>(-1); |
174 | Result[3][2] = - (static_cast<T>(2) * farVal * nearVal) / (farVal - nearVal); |
175 | return Result; |
176 | } |
177 | |
178 | template<typename T> |
179 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumZO(T left, T right, T bottom, T top, T nearVal, T farVal) |
180 | { |
181 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT |
182 | return frustumLH_ZO(left, right, bottom, top, nearVal, farVal); |
183 | # else |
184 | return frustumRH_ZO(left, right, bottom, top, nearVal, farVal); |
185 | # endif |
186 | } |
187 | |
188 | template<typename T> |
189 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumNO(T left, T right, T bottom, T top, T nearVal, T farVal) |
190 | { |
191 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT |
192 | return frustumLH_NO(left, right, bottom, top, nearVal, farVal); |
193 | # else |
194 | return frustumRH_NO(left, right, bottom, top, nearVal, farVal); |
195 | # endif |
196 | } |
197 | |
198 | template<typename T> |
199 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumLH(T left, T right, T bottom, T top, T nearVal, T farVal) |
200 | { |
201 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT |
202 | return frustumLH_ZO(left, right, bottom, top, nearVal, farVal); |
203 | # else |
204 | return frustumLH_NO(left, right, bottom, top, nearVal, farVal); |
205 | # endif |
206 | } |
207 | |
208 | template<typename T> |
209 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumRH(T left, T right, T bottom, T top, T nearVal, T farVal) |
210 | { |
211 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT |
212 | return frustumRH_ZO(left, right, bottom, top, nearVal, farVal); |
213 | # else |
214 | return frustumRH_NO(left, right, bottom, top, nearVal, farVal); |
215 | # endif |
216 | } |
217 | |
218 | template<typename T> |
219 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustum(T left, T right, T bottom, T top, T nearVal, T farVal) |
220 | { |
221 | # if GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_ZO |
222 | return frustumLH_ZO(left, right, bottom, top, nearVal, farVal); |
223 | # elif GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_NO |
224 | return frustumLH_NO(left, right, bottom, top, nearVal, farVal); |
225 | # elif GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_ZO |
226 | return frustumRH_ZO(left, right, bottom, top, nearVal, farVal); |
227 | # elif GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_NO |
228 | return frustumRH_NO(left, right, bottom, top, nearVal, farVal); |
229 | # endif |
230 | } |
231 | |
232 | template<typename T> |
233 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveRH_ZO(T fovy, T aspect, T zNear, T zFar) |
234 | { |
235 | assert(abs(aspect - std::numeric_limits<T>::epsilon()) > static_cast<T>(0)); |
236 | |
237 | T const tanHalfFovy = tan(fovy / static_cast<T>(2)); |
238 | |
239 | mat<4, 4, T, defaultp> Result(static_cast<T>(0)); |
240 | Result[0][0] = static_cast<T>(1) / (aspect * tanHalfFovy); |
241 | Result[1][1] = static_cast<T>(1) / (tanHalfFovy); |
242 | Result[2][2] = zFar / (zNear - zFar); |
243 | Result[2][3] = - static_cast<T>(1); |
244 | Result[3][2] = -(zFar * zNear) / (zFar - zNear); |
245 | return Result; |
246 | } |
247 | |
248 | template<typename T> |
249 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveRH_NO(T fovy, T aspect, T zNear, T zFar) |
250 | { |
251 | assert(abs(aspect - std::numeric_limits<T>::epsilon()) > static_cast<T>(0)); |
252 | |
253 | T const tanHalfFovy = tan(fovy / static_cast<T>(2)); |
254 | |
255 | mat<4, 4, T, defaultp> Result(static_cast<T>(0)); |
256 | Result[0][0] = static_cast<T>(1) / (aspect * tanHalfFovy); |
257 | Result[1][1] = static_cast<T>(1) / (tanHalfFovy); |
258 | Result[2][2] = - (zFar + zNear) / (zFar - zNear); |
259 | Result[2][3] = - static_cast<T>(1); |
260 | Result[3][2] = - (static_cast<T>(2) * zFar * zNear) / (zFar - zNear); |
261 | return Result; |
262 | } |
263 | |
264 | template<typename T> |
265 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveLH_ZO(T fovy, T aspect, T zNear, T zFar) |
266 | { |
267 | assert(abs(aspect - std::numeric_limits<T>::epsilon()) > static_cast<T>(0)); |
268 | |
269 | T const tanHalfFovy = tan(fovy / static_cast<T>(2)); |
270 | |
271 | mat<4, 4, T, defaultp> Result(static_cast<T>(0)); |
272 | Result[0][0] = static_cast<T>(1) / (aspect * tanHalfFovy); |
273 | Result[1][1] = static_cast<T>(1) / (tanHalfFovy); |
274 | Result[2][2] = zFar / (zFar - zNear); |
275 | Result[2][3] = static_cast<T>(1); |
276 | Result[3][2] = -(zFar * zNear) / (zFar - zNear); |
277 | return Result; |
278 | } |
279 | |
280 | template<typename T> |
281 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveLH_NO(T fovy, T aspect, T zNear, T zFar) |
282 | { |
283 | assert(abs(aspect - std::numeric_limits<T>::epsilon()) > static_cast<T>(0)); |
284 | |
285 | T const tanHalfFovy = tan(fovy / static_cast<T>(2)); |
286 | |
287 | mat<4, 4, T, defaultp> Result(static_cast<T>(0)); |
288 | Result[0][0] = static_cast<T>(1) / (aspect * tanHalfFovy); |
289 | Result[1][1] = static_cast<T>(1) / (tanHalfFovy); |
290 | Result[2][2] = (zFar + zNear) / (zFar - zNear); |
291 | Result[2][3] = static_cast<T>(1); |
292 | Result[3][2] = - (static_cast<T>(2) * zFar * zNear) / (zFar - zNear); |
293 | return Result; |
294 | } |
295 | |
296 | template<typename T> |
297 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveZO(T fovy, T aspect, T zNear, T zFar) |
298 | { |
299 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT |
300 | return perspectiveLH_ZO(fovy, aspect, zNear, zFar); |
301 | # else |
302 | return perspectiveRH_ZO(fovy, aspect, zNear, zFar); |
303 | # endif |
304 | } |
305 | |
306 | template<typename T> |
307 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveNO(T fovy, T aspect, T zNear, T zFar) |
308 | { |
309 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT |
310 | return perspectiveLH_NO(fovy, aspect, zNear, zFar); |
311 | # else |
312 | return perspectiveRH_NO(fovy, aspect, zNear, zFar); |
313 | # endif |
314 | } |
315 | |
316 | template<typename T> |
317 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveLH(T fovy, T aspect, T zNear, T zFar) |
318 | { |
319 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT |
320 | return perspectiveLH_ZO(fovy, aspect, zNear, zFar); |
321 | # else |
322 | return perspectiveLH_NO(fovy, aspect, zNear, zFar); |
323 | # endif |
324 | |
325 | } |
326 | |
327 | template<typename T> |
328 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveRH(T fovy, T aspect, T zNear, T zFar) |
329 | { |
330 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT |
331 | return perspectiveRH_ZO(fovy, aspect, zNear, zFar); |
332 | # else |
333 | return perspectiveRH_NO(fovy, aspect, zNear, zFar); |
334 | # endif |
335 | } |
336 | |
337 | template<typename T> |
338 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspective(T fovy, T aspect, T zNear, T zFar) |
339 | { |
340 | # if GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_ZO |
341 | return perspectiveLH_ZO(fovy, aspect, zNear, zFar); |
342 | # elif GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_NO |
343 | return perspectiveLH_NO(fovy, aspect, zNear, zFar); |
344 | # elif GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_ZO |
345 | return perspectiveRH_ZO(fovy, aspect, zNear, zFar); |
346 | # elif GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_NO |
347 | return perspectiveRH_NO(fovy, aspect, zNear, zFar); |
348 | # endif |
349 | } |
350 | |
351 | template<typename T> |
352 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovRH_ZO(T fov, T width, T height, T zNear, T zFar) |
353 | { |
354 | assert(width > static_cast<T>(0)); |
355 | assert(height > static_cast<T>(0)); |
356 | assert(fov > static_cast<T>(0)); |
357 | |
358 | T const rad = fov; |
359 | T const h = glm::cos(static_cast<T>(0.5) * rad) / glm::sin(static_cast<T>(0.5) * rad); |
360 | T const w = h * height / width; ///todo max(width , Height) / min(width , Height)? |
361 | |
362 | mat<4, 4, T, defaultp> Result(static_cast<T>(0)); |
363 | Result[0][0] = w; |
364 | Result[1][1] = h; |
365 | Result[2][2] = zFar / (zNear - zFar); |
366 | Result[2][3] = - static_cast<T>(1); |
367 | Result[3][2] = -(zFar * zNear) / (zFar - zNear); |
368 | return Result; |
369 | } |
370 | |
371 | template<typename T> |
372 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovRH_NO(T fov, T width, T height, T zNear, T zFar) |
373 | { |
374 | assert(width > static_cast<T>(0)); |
375 | assert(height > static_cast<T>(0)); |
376 | assert(fov > static_cast<T>(0)); |
377 | |
378 | T const rad = fov; |
379 | T const h = glm::cos(static_cast<T>(0.5) * rad) / glm::sin(static_cast<T>(0.5) * rad); |
380 | T const w = h * height / width; ///todo max(width , Height) / min(width , Height)? |
381 | |
382 | mat<4, 4, T, defaultp> Result(static_cast<T>(0)); |
383 | Result[0][0] = w; |
384 | Result[1][1] = h; |
385 | Result[2][2] = - (zFar + zNear) / (zFar - zNear); |
386 | Result[2][3] = - static_cast<T>(1); |
387 | Result[3][2] = - (static_cast<T>(2) * zFar * zNear) / (zFar - zNear); |
388 | return Result; |
389 | } |
390 | |
391 | template<typename T> |
392 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovLH_ZO(T fov, T width, T height, T zNear, T zFar) |
393 | { |
394 | assert(width > static_cast<T>(0)); |
395 | assert(height > static_cast<T>(0)); |
396 | assert(fov > static_cast<T>(0)); |
397 | |
398 | T const rad = fov; |
399 | T const h = glm::cos(static_cast<T>(0.5) * rad) / glm::sin(static_cast<T>(0.5) * rad); |
400 | T const w = h * height / width; ///todo max(width , Height) / min(width , Height)? |
401 | |
402 | mat<4, 4, T, defaultp> Result(static_cast<T>(0)); |
403 | Result[0][0] = w; |
404 | Result[1][1] = h; |
405 | Result[2][2] = zFar / (zFar - zNear); |
406 | Result[2][3] = static_cast<T>(1); |
407 | Result[3][2] = -(zFar * zNear) / (zFar - zNear); |
408 | return Result; |
409 | } |
410 | |
411 | template<typename T> |
412 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovLH_NO(T fov, T width, T height, T zNear, T zFar) |
413 | { |
414 | assert(width > static_cast<T>(0)); |
415 | assert(height > static_cast<T>(0)); |
416 | assert(fov > static_cast<T>(0)); |
417 | |
418 | T const rad = fov; |
419 | T const h = glm::cos(static_cast<T>(0.5) * rad) / glm::sin(static_cast<T>(0.5) * rad); |
420 | T const w = h * height / width; ///todo max(width , Height) / min(width , Height)? |
421 | |
422 | mat<4, 4, T, defaultp> Result(static_cast<T>(0)); |
423 | Result[0][0] = w; |
424 | Result[1][1] = h; |
425 | Result[2][2] = (zFar + zNear) / (zFar - zNear); |
426 | Result[2][3] = static_cast<T>(1); |
427 | Result[3][2] = - (static_cast<T>(2) * zFar * zNear) / (zFar - zNear); |
428 | return Result; |
429 | } |
430 | |
431 | template<typename T> |
432 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovZO(T fov, T width, T height, T zNear, T zFar) |
433 | { |
434 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT |
435 | return perspectiveFovLH_ZO(fov, width, height, zNear, zFar); |
436 | # else |
437 | return perspectiveFovRH_ZO(fov, width, height, zNear, zFar); |
438 | # endif |
439 | } |
440 | |
441 | template<typename T> |
442 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovNO(T fov, T width, T height, T zNear, T zFar) |
443 | { |
444 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT |
445 | return perspectiveFovLH_NO(fov, width, height, zNear, zFar); |
446 | # else |
447 | return perspectiveFovRH_NO(fov, width, height, zNear, zFar); |
448 | # endif |
449 | } |
450 | |
451 | template<typename T> |
452 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovLH(T fov, T width, T height, T zNear, T zFar) |
453 | { |
454 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT |
455 | return perspectiveFovLH_ZO(fov, width, height, zNear, zFar); |
456 | # else |
457 | return perspectiveFovLH_NO(fov, width, height, zNear, zFar); |
458 | # endif |
459 | } |
460 | |
461 | template<typename T> |
462 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovRH(T fov, T width, T height, T zNear, T zFar) |
463 | { |
464 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT |
465 | return perspectiveFovRH_ZO(fov, width, height, zNear, zFar); |
466 | # else |
467 | return perspectiveFovRH_NO(fov, width, height, zNear, zFar); |
468 | # endif |
469 | } |
470 | |
471 | template<typename T> |
472 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFov(T fov, T width, T height, T zNear, T zFar) |
473 | { |
474 | # if GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_ZO |
475 | return perspectiveFovLH_ZO(fov, width, height, zNear, zFar); |
476 | # elif GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_NO |
477 | return perspectiveFovLH_NO(fov, width, height, zNear, zFar); |
478 | # elif GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_ZO |
479 | return perspectiveFovRH_ZO(fov, width, height, zNear, zFar); |
480 | # elif GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_NO |
481 | return perspectiveFovRH_NO(fov, width, height, zNear, zFar); |
482 | # endif |
483 | } |
484 | |
485 | template<typename T> |
486 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> infinitePerspectiveRH(T fovy, T aspect, T zNear) |
487 | { |
488 | T const range = tan(fovy / static_cast<T>(2)) * zNear; |
489 | T const left = -range * aspect; |
490 | T const right = range * aspect; |
491 | T const bottom = -range; |
492 | T const top = range; |
493 | |
494 | mat<4, 4, T, defaultp> Result(static_cast<T>(0)); |
495 | Result[0][0] = (static_cast<T>(2) * zNear) / (right - left); |
496 | Result[1][1] = (static_cast<T>(2) * zNear) / (top - bottom); |
497 | Result[2][2] = - static_cast<T>(1); |
498 | Result[2][3] = - static_cast<T>(1); |
499 | Result[3][2] = - static_cast<T>(2) * zNear; |
500 | return Result; |
501 | } |
502 | |
503 | template<typename T> |
504 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> infinitePerspectiveLH(T fovy, T aspect, T zNear) |
505 | { |
506 | T const range = tan(fovy / static_cast<T>(2)) * zNear; |
507 | T const left = -range * aspect; |
508 | T const right = range * aspect; |
509 | T const bottom = -range; |
510 | T const top = range; |
511 | |
512 | mat<4, 4, T, defaultp> Result(T(0)); |
513 | Result[0][0] = (static_cast<T>(2) * zNear) / (right - left); |
514 | Result[1][1] = (static_cast<T>(2) * zNear) / (top - bottom); |
515 | Result[2][2] = static_cast<T>(1); |
516 | Result[2][3] = static_cast<T>(1); |
517 | Result[3][2] = - static_cast<T>(2) * zNear; |
518 | return Result; |
519 | } |
520 | |
521 | template<typename T> |
522 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> infinitePerspective(T fovy, T aspect, T zNear) |
523 | { |
524 | # if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT |
525 | return infinitePerspectiveLH(fovy, aspect, zNear); |
526 | # else |
527 | return infinitePerspectiveRH(fovy, aspect, zNear); |
528 | # endif |
529 | } |
530 | |
531 | // Infinite projection matrix: http://www.terathon.com/gdc07_lengyel.pdf |
532 | template<typename T> |
533 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> tweakedInfinitePerspective(T fovy, T aspect, T zNear, T ep) |
534 | { |
535 | T const range = tan(fovy / static_cast<T>(2)) * zNear; |
536 | T const left = -range * aspect; |
537 | T const right = range * aspect; |
538 | T const bottom = -range; |
539 | T const top = range; |
540 | |
541 | mat<4, 4, T, defaultp> Result(static_cast<T>(0)); |
542 | Result[0][0] = (static_cast<T>(2) * zNear) / (right - left); |
543 | Result[1][1] = (static_cast<T>(2) * zNear) / (top - bottom); |
544 | Result[2][2] = ep - static_cast<T>(1); |
545 | Result[2][3] = static_cast<T>(-1); |
546 | Result[3][2] = (ep - static_cast<T>(2)) * zNear; |
547 | return Result; |
548 | } |
549 | |
550 | template<typename T> |
551 | GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> tweakedInfinitePerspective(T fovy, T aspect, T zNear) |
552 | { |
553 | return tweakedInfinitePerspective(fovy, aspect, zNear, epsilon<T>()); |
554 | } |
555 | }//namespace glm |
556 | |