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1 #ifndef CAMERA_H_
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2 #define CAMERA_H_
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3
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4 #include "vmath/vmath.h"
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5
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6 class Camera {
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7 protected:
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8 Vector3 pos;
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9 float vfov; // vertical field of view in radians
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10
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11 mutable Matrix4x4 cached_matrix;
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12 mutable bool cached_matrix_valid;
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13
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14 mutable Vector3 *rdir_cache;
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15 mutable int rdir_cache_width, rdir_cache_height;
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16 mutable float rdir_cache_fov;
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17
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18 virtual void calc_matrix(Matrix4x4 *mat) const = 0;
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19
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20 Vector2 calc_sample_pos(int x, int y, int xsz, int ysz, int sample) const;
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21
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22 public:
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23 Camera();
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24 Camera(const Vector3 &pos);
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25 virtual ~Camera();
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26
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27 virtual void set_fov(float vfov);
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28 virtual float get_fov() const;
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29
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30 virtual void set_position(const Vector3 &pos);
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31 virtual const Vector3 &get_position() const;
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32 virtual const Matrix4x4 &get_matrix() const;
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33
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34 virtual Ray get_primary_ray(int x, int y, int xsz, int ysz, int sample = 0) const;
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35 };
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36
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37 class TargetCamera : public Camera {
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38 protected:
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39 Vector3 target;
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40
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41 void calc_matrix(Matrix4x4 *mat) const;
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42
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43 public:
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44 TargetCamera();
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45 TargetCamera(const Vector3 &pos, const Vector3 &targ);
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46
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47 virtual void set_target(const Vector3 &targ);
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48 virtual const Vector3 &get_target() const;
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49 };
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50
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51 class FlyCamera : public Camera {
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52 protected:
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53 Quaternion rot;
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54
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55 void calc_matrix(Matrix4x4 *mat) const;
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56
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57 public:
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58 void input_move(float x, float y, float z);
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59 void input_rotate(float x, float y, float z);
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60 };
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61
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62 #endif // CAMERA_H_
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