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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 mutable struct {
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9 bool valid;
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10 Matrix4x4 mat;
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11 } mcache, mcache_inv;
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12
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13 virtual void calc_matrix(Matrix4x4 *mat) const = 0;
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14 virtual void calc_inv_matrix(Matrix4x4 *mat) const;
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15
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16 void inval_cache() { mcache.valid = mcache_inv.valid = false; }
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17 void set_glmat(const Matrix4x4 &m) const;
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18
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19 public:
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20 Camera();
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21 virtual ~Camera();
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22
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23 const Matrix4x4 &matrix() const;
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24 const Matrix4x4 &inv_matrix() const;
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25
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26 void use() const;
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27 void use_inverse() const;
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28
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29 // these do nothing, override to provide input handling
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30 virtual void input_move(float x, float y, float z);
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31 virtual void input_rotate(float x, float y, float z);
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32 virtual void input_zoom(float factor);
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33 };
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34
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35 class OrbitCamera : public Camera {
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36 protected:
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37 float theta, phi, rad;
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38 float min_phi, max_phi;
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39
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40 void calc_matrix(Matrix4x4 *mat) const;
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41 void calc_inv_matrix(Matrix4x4 *mat) const;
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42
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43 public:
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44 OrbitCamera();
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45 virtual ~OrbitCamera();
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46
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47 void set_distance(float dist);
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48 void set_vertical_limits(float a, float b);
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49
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50 void input_rotate(float x, float y, float z);
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51 void input_zoom(float factor);
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52 };
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53
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54 class FpsCamera : public OrbitCamera {
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55 protected:
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56 Vector3 pos;
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57
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58 void calc_matrix(Matrix4x4 *mat) const;
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59 void calc_inv_matrix(Matrix4x4 *mat) const;
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60
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61 public:
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62 void input_move(float x, float y, float z);
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63
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64 const Vector3 &get_position() const;
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65 };
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66
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67
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68 class FlyCamera : public Camera {
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69 private:
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70 Vector3 pos;
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71 Quaternion rot;
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72
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73 void calc_matrix(Matrix4x4 *mat) const;
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74 //void calc_inv_matrix(Matrix4x4 *mat) const;
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75
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76 public:
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77 FlyCamera();
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78
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79 const Vector3 &get_position() const;
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80 const Quaternion &get_rotation() const;
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81
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82 void input_move(float x, float y, float z);
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83 void input_rotate(float x, float y, float z);
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84 };
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85
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86
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87 #endif // CAMERA_H_
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