rayzor
annotate src/camera.cc @ 22:5380ff64e83f
minor changes from dos, and line endings cleanup
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Fri, 02 May 2014 14:32:58 +0300 |
| parents | 79609d482762 |
| children |
| rev | line source |
|---|---|
| nuclear@1 | 1 #include "camera.h" |
| nuclear@15 | 2 #include "rayzor.h" |
| nuclear@1 | 3 |
| nuclear@1 | 4 Camera::Camera() |
| nuclear@1 | 5 { |
| nuclear@12 | 6 type = NODE_CAMERA; |
| nuclear@15 | 7 fov = M_PI / 4.0; |
| nuclear@12 | 8 set_position(Vector3(0, 0, 10)); |
| nuclear@1 | 9 } |
| nuclear@1 | 10 |
| nuclear@1 | 11 void Camera::set_target(const Vector3 &target) |
| nuclear@1 | 12 { |
| nuclear@13 | 13 this->target.set_position(target); |
| nuclear@1 | 14 } |
| nuclear@1 | 15 |
| nuclear@13 | 16 Vector3 Camera::get_target() const |
| nuclear@1 | 17 { |
| nuclear@13 | 18 return target.get_position(); |
| nuclear@1 | 19 } |
| nuclear@1 | 20 |
| nuclear@1 | 21 void Camera::set_fov(float fov) |
| nuclear@1 | 22 { |
| nuclear@1 | 23 this->fov = fov; |
| nuclear@1 | 24 } |
| nuclear@1 | 25 |
| nuclear@1 | 26 float Camera::get_fov() const |
| nuclear@1 | 27 { |
| nuclear@1 | 28 return fov; |
| nuclear@1 | 29 } |
| nuclear@1 | 30 |
| nuclear@12 | 31 void Camera::calc_matrix() const |
| nuclear@1 | 32 { |
| nuclear@15 | 33 if(!xform_valid) { |
| nuclear@15 | 34 xform.set_identity(); |
| nuclear@15 | 35 xform.lookat(pos, target.get_position(), Vector3(0, 1, 0)); |
| nuclear@15 | 36 xform_valid = true; |
| nuclear@15 | 37 } |
| nuclear@1 | 38 } |
| nuclear@12 | 39 |
| nuclear@18 | 40 void Camera::draw(bool emph) const |
| nuclear@12 | 41 { |
| nuclear@12 | 42 } |
| nuclear@12 | 43 |
| nuclear@17 | 44 bool Camera::intersect(const Ray &ray, RayHit *hit) const |
| nuclear@12 | 45 { |
| nuclear@12 | 46 return false; |
| nuclear@12 | 47 } |
| nuclear@15 | 48 |
| nuclear@15 | 49 Ray Camera::get_primary_ray(int x, int y) const |
| nuclear@15 | 50 { |
| nuclear@15 | 51 calc_inv_matrix(); |
| nuclear@15 | 52 |
| nuclear@15 | 53 float aspect = (float)fb_width / (float)fb_height; |
| nuclear@15 | 54 float pwidth = 2.0 * aspect / (float)fb_width; |
| nuclear@15 | 55 float pheight = 2.0 / (float)fb_height; |
| nuclear@15 | 56 |
| nuclear@15 | 57 Vector3 dir; |
| nuclear@15 | 58 dir.x = (float)x * pwidth - aspect; |
| nuclear@15 | 59 dir.y = 1.0 - (float)y * pheight; |
| nuclear@15 | 60 dir.z = -1.0 / tan(fov / 2.0); |
| nuclear@15 | 61 dir.normalize(); |
| nuclear@15 | 62 |
| nuclear@15 | 63 return transform(inv_xform, Ray(Vector3(0, 0, 0), dir)); |
| nuclear@15 | 64 } |