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71 | 71 |
|
72 | 72 |
|
73 | 73 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ C++ highlight
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74 |
| - ray(const point3& origin, const vec3& direction) : orig(origin), dir(direction), tm(0) |
75 |
| - {} |
76 |
| - |
77 | 74 | ray(const point3& origin, const vec3& direction, double time = 0.0)
|
78 | 75 | : orig(origin), dir(direction), tm(time)
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79 | 76 | {}
|
|
186 | 183 | }
|
187 | 184 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ C++
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188 | 185 |
|
189 |
| - ... |
| 186 | + bool hit(const ray& r, interval ray_t, hit_record& rec) const override { |
| 187 | + ... |
| 188 | + } |
190 | 189 |
|
191 | 190 | private:
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192 | 191 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ C++ highlight
|
|
198 | 197 | bool is_moving;
|
199 | 198 | vec3 center_vec;
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200 | 199 |
|
201 |
| - point3 center(double time) const { |
| 200 | + point3 sphere_center(double time) const { |
202 | 201 | // Linearly interpolate from center1 to center2 according to time, where t=0 yields
|
203 | 202 | // center1, and t=1 yields center2.
|
204 |
| - return center0 + time*center_vec; |
| 203 | + return center1 + time*center_vec; |
205 | 204 | }
|
206 | 205 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ C++
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207 | 206 | };
|
|
239 | 238 |
|
240 | 239 | </div>
|
241 | 240 |
|
242 |
| -<div class='together'> |
243 |
| -We need to implement the new `interval::contains()` method mentioned above: |
244 |
| - |
245 |
| - ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ C++ |
246 |
| - class interval { |
247 |
| - public: |
248 |
| - ... |
249 |
| - bool contains(double x) const { |
250 |
| - return min <= x && x <= max; |
251 |
| - } |
252 |
| - ... |
253 |
| - }; |
254 |
| - ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
255 |
| - [Listing [interval-contains]: <kbd>interval.h</kbd> interval::contains() method] |
256 |
| - |
257 |
| -</div> |
258 |
| - |
259 | 241 |
|
260 | 242 | Tracking the Time of Ray Intersection
|
261 | 243 | --------------------------------------
|
|
4198 | 4180 | (accessed MMM. DD, YYYY)
|
4199 | 4181 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
4200 | 4182 |
|
4201 |
| - ### MLA: |
| 4183 | + ### MLA |
4202 | 4184 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
4203 | 4185 | Ray Tracing: The Next Week. raytracing.github.io/books/RayTracingTheNextWeek.html
|
4204 | 4186 | Accessed DD MMM. YYYY.
|
|
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