1 | /*! |
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2 | * @file camera.h |
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3 | * Viewpoint controlling class definitions |
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4 | */ |
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5 | |
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6 | #ifndef _CAMERA_H |
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7 | #define _CAMERA_H |
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8 | |
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9 | #include "p_node.h" |
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10 | #include "event_listener.h" |
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11 | #include "plane.h" |
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12 | |
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13 | class World; |
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14 | class CameraTarget; |
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15 | class Event; |
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16 | |
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17 | |
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18 | //! Camera |
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19 | /** |
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20 | * This class controls the viewpoint from which the World is rendered. |
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21 | */ |
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22 | class Camera : public PNode, public EventListener |
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23 | { |
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24 | ObjectListDeclaration(Camera); |
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25 | public: |
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26 | //! an enumerator for different types of view |
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27 | typedef enum ViewMode |
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28 | { |
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29 | ViewNormal, |
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30 | ViewBehind, |
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31 | ViewFront, |
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32 | ViewLeft, |
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33 | ViewRight, |
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34 | ViewTop |
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35 | }; |
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36 | |
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37 | Camera(); |
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38 | virtual ~Camera(); |
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39 | |
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40 | void lookAt(PNode* target); |
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41 | CameraTarget* getTarget() const { return this->target; }; |
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42 | PNode* getTargetNode() const; |
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43 | |
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44 | void setAspectRatio(float aspectRatio); |
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45 | void setClipRegion(float nearClip, float farClip); |
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46 | |
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47 | /** @param fovy new field of view factor (in degrees) */ |
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48 | void setFovy(float fovy) { this->fovy = fovy; }; |
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49 | /** @param fovy new field of view factor (in degrees) to iterate to */ |
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50 | void setToFovy(float toFovy) { this->toFovy = toFovy; }; |
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51 | |
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52 | void setViewMode(Camera::ViewMode mode); |
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53 | inline const Vector& getViewVector() const { return this->viewVector; } |
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54 | inline const Vector& getUpVector() const { return this->upVector; } |
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55 | inline const Plane& getViewFrustum() const { return this->frustumPlane; } |
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56 | |
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57 | inline float distance(const Vector& distance) const { return this->frustumPlane.distancePoint(distance); } |
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58 | inline float distance(const PNode* node) const { return distance(node->getAbsCoor()); } |
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59 | |
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60 | void tick(float dt); |
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61 | void apply (); |
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62 | void project(); |
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63 | |
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64 | void process(const Event &event); |
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65 | |
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66 | private: |
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67 | CameraTarget* target; //!< The Target of the Camera (where this Camera Looks at) |
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68 | |
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69 | float fovy; //!< The field of view Angle (in degrees). |
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70 | float aspectRatio; //!< The aspect ratio (width / height). |
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71 | float nearClip; //!< The near clipping plane. |
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72 | float farClip; //!< The far clipping plane. |
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73 | |
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74 | float toFovy; //!< The fovy-mode to iterate to. |
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75 | Camera::ViewMode currentMode; //!< The ViewMode the camera is in |
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76 | |
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77 | Vector delay; |
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78 | Plane frustumPlane; //!< plane that marks the view frustum |
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79 | Vector viewVector; //!< the direction of the camera view |
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80 | Vector upVector; //!< direction of the up vector |
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81 | }; |
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82 | |
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83 | //! A CameraTarget is where the Camera is looking at. |
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84 | class CameraTarget : public PNode |
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85 | { |
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86 | friend class Camera; //! The CameraTarget is a friend of Camera. noone else needs a CameraTarget, so noone else can create it. |
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87 | ObjectListDeclaration(CameraTarget); |
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88 | |
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89 | private: |
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90 | CameraTarget(); |
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91 | |
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92 | public: |
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93 | }; |
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94 | |
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95 | |
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96 | #endif /* _CAMERA_H */ |
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