1 | /*! |
---|
2 | * @file camera.h |
---|
3 | * Viewpoint controlling class definitions |
---|
4 | */ |
---|
5 | |
---|
6 | #ifndef _CAMERA_H |
---|
7 | #define _CAMERA_H |
---|
8 | |
---|
9 | #include "p_node.h" |
---|
10 | #include "event_listener.h" |
---|
11 | #include "plane.h" |
---|
12 | |
---|
13 | class World; |
---|
14 | class CameraTarget; |
---|
15 | class Event; |
---|
16 | |
---|
17 | //! an enumerator for different types of view |
---|
18 | typedef enum ViewMode |
---|
19 | { |
---|
20 | VIEW_NORMAL, |
---|
21 | VIEW_BEHIND, |
---|
22 | VIEW_FRONT, |
---|
23 | VIEW_LEFT, |
---|
24 | VIEW_RIGHT, |
---|
25 | VIEW_TOP |
---|
26 | }; |
---|
27 | |
---|
28 | //! Camera |
---|
29 | /** |
---|
30 | * This class controls the viewpoint from which the World is rendered. |
---|
31 | */ |
---|
32 | class Camera : public PNode, public EventListener |
---|
33 | { |
---|
34 | public: |
---|
35 | Camera(); |
---|
36 | virtual ~Camera(); |
---|
37 | |
---|
38 | void lookAt(PNode* target); |
---|
39 | CameraTarget* getTarget() const { return this->target; }; |
---|
40 | PNode* getTargetNode() const; |
---|
41 | |
---|
42 | void setAspectRatio(float aspectRatio); |
---|
43 | void setClipRegion(float nearClip, float farClip); |
---|
44 | |
---|
45 | /** @param fovy new field of view factor (in degrees) */ |
---|
46 | void setFovy(float fovy) { this->fovy = fovy; }; |
---|
47 | /** @param fovy new field of view factor (in degrees) to iterate to */ |
---|
48 | void setToFovy(float toFovy) { this->toFovy = toFovy; }; |
---|
49 | |
---|
50 | void setViewMode(ViewMode mode); |
---|
51 | inline const Vector& getViewVector() const { return this->viewVector; } |
---|
52 | inline const Vector& getUpVector() const { return this->upVector; } |
---|
53 | inline const Plane& getViewFrustum() const { return this->frustumPlane; } |
---|
54 | |
---|
55 | inline float distance(const Vector& distance) const { return this->frustumPlane.distancePoint(distance); } |
---|
56 | inline float distance(const PNode* node) const { return distance(node->getAbsCoor()); } |
---|
57 | |
---|
58 | void tick(float dt); |
---|
59 | void apply (); |
---|
60 | void project(); |
---|
61 | |
---|
62 | void process(const Event &event); |
---|
63 | |
---|
64 | private: |
---|
65 | CameraTarget* target; //!< The Target of the Camera (where this Camera Looks at) |
---|
66 | |
---|
67 | float fovy; //!< The field of view Angle (in degrees). |
---|
68 | float aspectRatio; //!< The aspect ratio (width / height). |
---|
69 | float nearClip; //!< The near clipping plane. |
---|
70 | float farClip; //!< The far clipping plane. |
---|
71 | |
---|
72 | float toFovy; //!< The fovy-mode to iterate to. |
---|
73 | ViewMode currentMode; //!< The ViewMode the camera is in |
---|
74 | |
---|
75 | Vector delay; |
---|
76 | Plane frustumPlane; //!< plane that marks the view frustum |
---|
77 | Vector viewVector; //!< the direction of the camera view |
---|
78 | Vector upVector; //!< direction of the up vector |
---|
79 | }; |
---|
80 | |
---|
81 | //! A CameraTarget is where the Camera is looking at. |
---|
82 | class CameraTarget : public PNode |
---|
83 | { |
---|
84 | friend class Camera; //! The CameraTarget is a friend of Camera. noone else needs a CameraTarget, so noone else can create it. |
---|
85 | |
---|
86 | private: |
---|
87 | CameraTarget(); |
---|
88 | |
---|
89 | public: |
---|
90 | }; |
---|
91 | |
---|
92 | |
---|
93 | #endif /* _CAMERA_H */ |
---|