121 lines
2.9 KiB
C
121 lines
2.9 KiB
C
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#ifndef TRACKBALL_H
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#define TRACKBALL_H
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#include <vcg/math/similarity.h>
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#include <wrap/gui/view.h>
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#include <wrap/gui/trackmode.h>
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#include <list>
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#include <map>
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namespace vcg {
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class Transform {
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public:
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Transform();
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Similarityf track;
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Similarityf local;
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};
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Transform interpolate(const Transform &a, const Transform &b, float t);
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class Trackball: public Transform {
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public:
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enum Button { BUTTON_LEFT = 1, BUTTON_MIDDLE = 2, BUTTON_RIGHT = 4, WHEEL = 8,
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KEY_SHIFT = 16, KEY_CTRL = 32, KEY_ALT = 64, HANDLE = 128 };
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Trackball();
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void SetIdentity();
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void SetPosition(const Similarityf &local, int millisec = 0);
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void SetTransform(const Transform &transform, int miilisec = 0);
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//operating
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void GetView();
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void Apply();
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void Draw();
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void Reset();
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//interface
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void MouseDown(int x, int y, Button button);
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void MouseMove(int x, int y);
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void MouseUp(int x, int y, Button button);
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void MouseWheel(Button notch);
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void ButtonUp(Button button);
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void ButtonDown(Button button);
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//default sensitivity 1
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void SetSensitivity(float s);
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//spinning interface
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void SetSpinnable(bool on);
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bool IsSpinnable();
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void SetSpinning(Quaternionf &spin);
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void StopSpinning();
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bool IsSpinning();
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//interfaccia navigation:
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void Back();
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void Forward();
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void Home();
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void Store();
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void HistorySize(int lenght);
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//internals
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enum System { LOCAL, VIEW, SCREEN };
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enum Motion { NONE = 0, ROTATE = 1, ROTATE_DUMMY = 2, //really makes sense only in VIEW system
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ROTATE_X = 3, ROTATE_Y = 4, ROTATE_Z = 5, // Axis Constrained Rotation
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DRAG_X = 6, DRAG_Y = 7, DRAG_Z = 8, // Drag constrained to an axis (trackball axis)
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DRAG_XY = 9, DRAG_YZ = 10, DRAG_XZ = 11, // Drag constrained to a plane
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SCALE = 12 //scale respect to center of trackball
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};
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struct Action {
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System system;
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Motion motion;
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Action() {}
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Action(System s, Motion m): system(s), motion(m) {}
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};
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///Find the current action ussing the current button
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void SetCurrentAction();
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protected:
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View<float> camera;
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Similarityf view; //Rotate LOCAL coordinate into VIEW coordinates
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int current_button;
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Action current_action;
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TrackMode *CurrentMode();
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std::map<int, Action> actions;
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Similarityf last_track;
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Similarityf last_view;
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int last_x, last_y;
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bool dragging;
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int button_mask;
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Quaternionf spin;
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bool spinnable;
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bool spinning;
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std::list<Transform> history;
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int history_size;
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Point3f ScreenOrigin(); //center of trackball in Screen coord
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Point3f ModelOrigin(); //center of trackball in Model coord
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Matrix44f ScreenToModel(); //forse non serve.....
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Similarityf ModelToLocal();
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//Point3f ScreenToLocal(const Point3f &p);
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//Point3f LocalToScreen(const Point3f &p);
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};
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}//namespace
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#endif
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