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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 namespace goatgfx {
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7
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8 class Camera {
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9 protected:
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10 float roll;
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11
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12 mutable struct {
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13 bool valid;
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14 Matrix4x4 mat;
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15 } mcache, mcache_inv;
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16
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17 virtual void calc_matrix(Matrix4x4 *mat) const = 0;
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18 virtual void calc_inv_matrix(Matrix4x4 *mat) const;
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19
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20 void inval_cache() { mcache.valid = mcache_inv.valid = false; }
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21 void set_glmat(const Matrix4x4 &m) const;
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22
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23 public:
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24 Camera();
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25 virtual ~Camera();
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26
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27 const Matrix4x4 &matrix() const;
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28 const Matrix4x4 &inv_matrix() const;
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29
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30 void use() const;
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31 void use_inverse() const;
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32
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33 // these do nothing, override to provide input handling
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34 virtual void input_move(float x, float y, float z);
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35 virtual void input_rotate(float x, float y, float z);
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36 virtual void input_zoom(float factor);
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37 };
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38
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39 class OrbitCamera : public Camera {
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40 protected:
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41 float theta, phi, rad;
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42
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43 void calc_matrix(Matrix4x4 *mat) const;
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44 void calc_inv_matrix(Matrix4x4 *mat) const;
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45
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46 public:
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47 OrbitCamera();
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48 virtual ~OrbitCamera();
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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 class FlyCamera : public Camera {
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68 private:
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69 Vector3 pos;
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70 Quaternion rot;
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71
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72 void calc_matrix(Matrix4x4 *mat) const;
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73 //void calc_inv_matrix(Matrix4x4 *mat) const;
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74
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75 public:
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76 FlyCamera();
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77
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78 const Vector3 &get_position() const;
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79 const Quaternion &get_rotation() const;
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80
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81 void input_move(float x, float y, float z);
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82 void input_rotate(float x, float y, float z);
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83 };
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84
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85
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86 class VRFpsCamera : public FpsCamera {
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87 private:
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88 float neck_eye_dist;
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89 float prev_angles[3];
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90
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91 void calc_matrix(Matrix4x4 *mat) const;
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92 void calc_inv_matrix(Matrix4x4 *mat) const;
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93
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94 public:
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95 VRFpsCamera();
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96
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97 void track_vr();
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98 };
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99
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100 } // namespace goatgfx
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101
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102 #endif // CAMERA_H_
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