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source: orxonox.OLD/trunk/src/lib/graphics/render2D/element_2d.h @ 9744

Last change on this file since 9744 was 8360, checked in by bensch, 18 years ago

orxonox/trunk: more performant Element2D'drawer

File size: 13.9 KB
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1/*!
2 * @file element_2d.h
3 * Definition of the 2D elements rendered on top of all other stuff.
4 */
5
6#ifndef _ELEMENT_2D_H
7#define _ELEMENT_2D_H
8
9#include "base_object.h"
10
11#include "vector.h"
12#include "vector2D.h"
13#include <list>
14
15// FORWARD DECLARATION
16class PNode;
17class TiXmlElement;
18
19//!< An enumerator defining the Depth of a 2D-element.
20typedef enum
21{
22  E2D_LAYER_BELOW_ALL           =     0,        //!< Will be rendered below the 3D-scene. @todo make this work.
23  E2D_LAYER_BOTTOM              =     1,        //!< Will be rendered on the bottom Layer
24  E2D_LAYER_MEDIUM              =     2,        //!< Will be rendered on the medium Layer.
25  E2D_LAYER_TOP                 =     3,        //!< Will be rendered on top of everything else
26  E2D_LAYER_ABOVE_ALL           =     4,        //!< Will be rendered above everything else.
27
28  E2D_LAYER_COUNT               =     5,         //!< The count of Layers.
29} E2D_LAYER;
30#define E2D_DEFAULT_LAYER       E2D_LAYER_MEDIUM
31#define E2D_LAYER_ALL           5
32
33typedef enum
34{
35  E2D_ALIGN_NONE                =     0,
36  E2D_ALIGN_LEFT                =     1,
37  E2D_ALIGN_RIGHT               =     2,
38  E2D_ALIGN_CENTER              =     4,
39  E2D_ALIGN_SCREEN_CENTER       =     8
40} E2D_ALIGNMENT;
41
42typedef enum
43{
44  E2D_PARENT_NONE                    = 0x0000,
45  E2D_PARENT_LOCAL_ROTATE            = 0x0001,    //!< Rotates all the children around their centers.
46  E2D_PARENT_ROTATE_MOVEMENT         = 0x0002,    //!< Moves all the children around the center of their parent, without the rotation around their own centers.
47
48  E2D_PARENT_MOVEMENT                = 0x0004,    //!< Moves all children along with the parent.
49// special linkage modes
50  E2D_PARENT_ALL                     = 0x0003,    //!< Moves all children around the center of their parent, and also rotates their centers
51  E2D_PARENT_ROTATE_AND_MOVE         = 0x0005,    //!< Rotates all children around their axis, and moves them as the Parent Moves, but does not rotate around the center of their parent.
52
53
54  // REPARENTING
55  E2D_REPARENT_TO_NULL               = 0x0010,    //!< Reparents to the Null, if the Parent is Removed. Meaning the Node wont have a parent anymore.
56  E2D_REPARENT_TO_PARENTS_PARENT     = 0x0020,    //!< Reparents the Node to the parents (old) parent it the parent gets removed.
57  /////////////////////////////////////////////   //  ELSE: Reparents to the NullParent.
58  E2D_REPARENT_DELETE_CHILDREN       = 0x0040,    //!< Deletes the Children of the node when This Node is Removed. (Use with care).
59  /// FIXME
60   E2D_REPARENT_KEEP_POSITION         = 0x0080,   //!< Tries to keep the Position if the Node is reparented.
61
62
63  // DELETION
64  E2D_PROHIBIT_CHILD_DELETE          = 0x0100,    //!< Prohibits the Children from being deleted if this Node gets deleted.
65  E2D_PROHIBIT_DELETE_WITH_PARENT    = 0x0200,    //!< Prohibits the Node to be deleted if the Parent is. Child will be reparented according to the Repaenting-Rules
66  E2D_REPARENT_CHILDREN_ON_REMOVE    = 0x0400,    //!< Reparents the Children of the Node if the Node gets Removed.
67  E2D_REPARENT_ON_PARENTS_REMOVE     = 0x0800,    //!< The Node gets Reparented if its Parent gets removed. Child will be reparented according to the Reparenting-Rules.
68
69  // VISIBILITY/ACTIVITY
70  E2D_HIDE_CHILDREN_IF_HIDDEN        = 0x1000,    //!< Prohibits the Children from being drawn if this node isn't visible. (used for Draw))
71  //E2D_HIDE_IF_PARENT_HIDDEN          = 0x2000,    //!< Prohibits the node from being drawn if the Parent is invisible.
72  E2D_UPDATE_CHILDREN_IF_INACTIVE    = 0x4000,    //!< Updates the Children of this Node even if the Parent is Inactive (note if this's parent is inactive children won't be updated.)
73  E2D_STATIC_NODE                    = 0x8000,    //!< Used for nodes that do not have any moving children, and that do not move.
74
75} E2D_PARENT_MODE;
76#define     E2D_PARENT_MODE_DEFAULT     E2D_PARENT_ALL | \
77                                        E2D_REPARENT_KEEP_POSITION
78
79//! A class for 2D-elements
80/**
81 * this class mainly tries to imitate PNode in its functionality, but on a 2D-level
82 * it extends PNode in the Sense of the tick-ability/draw-alility layering (and size)
83 *
84 * Layering: Layers are sorted into the Tree. e.g:
85 * the roor is in the lowest Layer, the leaves in the highest (of each branche)
86 * the first child of each node is in the lowest layer of all children, the last in the highest
87 * -> the tree is sorted on insertion of a new Child: @see Element2D::addChild2D()
88 */
89class Element2D : virtual public BaseObject {
90
91  public:
92    Element2D(Element2D* parent = Element2D::getNullElement(), E2D_LAYER layer = E2D_DEFAULT_LAYER, short nodeFlags = E2D_PARENT_MODE_DEFAULT);
93    virtual ~Element2D();
94
95    virtual void loadParams(const TiXmlElement* root);
96
97    // ACTIVATION //
98    inline void activate2D() { this->bActive = this->bRelCoorChanged = this->bRelDirChanged = true; };
99    inline void deactivate2D() { this->bActive = false; };
100    inline bool get2DActiveState() { return this->bActive; };
101
102    // ALIGNMENT //
103    /** @param alignment the new Alignment of the 2D-Element */
104    inline void setAlignment(E2D_ALIGNMENT alignment) { this->alignment = alignment; };
105    void setAlignment(const std::string& alignment);
106    inline E2D_ALIGNMENT getAlignment() const { return this->alignment; };
107
108    // LAYERING //
109    void setLayer(E2D_LAYER layer);
110    void setLayer(const std::string& layer);
111    /** @returns the Layer this Element is drawn to */
112    inline E2D_LAYER getLayer() const { return this->layer; };
113
114    // VISIBILITY //
115    /** @param visible true if the Element should be visible false otherwise (will not be rendered) */
116    inline void setVisibility(bool visible) { this->bVisible = visible; };
117    /** @returns the visibility state */
118    inline bool isVisible() const { return (this->bVisible && this->bCurrentlyVisible);  };
119
120
121    // POSITIONAL (E2D-specials) //
122    /** @param bindNode the Node this 2D-element should follow. if NULL the Element will not follow anything */
123    void setBindNode(const PNode* bindNode);
124    void setBindNode(const std::string& bindNode);
125    inline const PNode* getBindNode() const { return this->bindNode; };
126
127    inline void setSize2D(float x, float y) { this->size = Vector2D(x, y); };
128    inline void setSize2D(const Vector2D& size) { this->size = size; };
129    inline const Vector2D& getSize2D() const { return this->size; };
130    void setSizeSoft2D(float x, float y, float bias = 1.0);
131    inline void setSizeX2D(float x) { this->size.x = x; };
132    inline void setSizeY2D(float y) { this->size.y = y; };
133    inline float getSizeX2D() const { return this->size.x; };
134    inline float getSizeY2D() const { return this->size.y; };
135
136  public:
137    virtual void tick(float dt) {};
138    virtual void draw() const  {};
139    void tick2D(float dt);
140    void draw2D(E2D_LAYER from, E2D_LAYER to) const;
141    void drawChildren(E2D_LAYER from, E2D_LAYER to) const;
142
143    // LIKE PNODE
144  public:
145    void setRelCoor2D (const Vector2D& relCoord);
146    void setRelCoorX2D(float x);
147    void setRelCoorY2D(float y);
148    void setRelCoor2D (float x, float y);
149    void setRelCoor2Dpx (int x, int y);
150    void setRelCoorSoft2D (const Vector2D& relCoordSoft, float bias = 1.0);
151    void setRelCoorSoft2D (float x, float y, float bias = 1.0);
152    void setRelCoorSoft2Dpx (int x, int y, float bias = 1.0);
153    /** @returns the relative position */
154    inline const Vector2D& getRelCoor2D () const { return this->prevRelCoordinate; };
155    /** @returns the Relative Coordinate Destination */
156    inline const Vector2D& getRelCoorSoft2D() const { return (this->toCoordinate)?*this->toCoordinate:this->relCoordinate; };
157    const Vector2D& getRelCoor2Dpx() const;
158    void setAbsCoor2D (const Vector2D& absCoord);
159    void setAbsCoor2D (float x, float y);
160    void setAbsCoorX2D(float x);
161    void setAbsCoorY2D(float y);
162    void setAbsCoor2Dpx (int x, int y);
163    void setAbsCoorSoft2D (const Vector2D& absCoordSoft, float bias = 1.0);
164    void setAbsCoorSoft2D (float x, float y, float bias = 1.0);
165    /** @returns the absolute position */
166    inline const Vector2D& getAbsCoor2D () const { return this->absCoordinate; };
167    const Vector2D& getAbsCoor2Dpx () const;
168
169    void shiftCoor2D (const Vector2D& shift);
170    void shiftCoor2Dpx (int x, int y);
171
172    void setRelDir2D (float relDir);
173    void setRelDirSoft2D(float relDirSoft, float bias = 1.0);
174    /** @returns the relative Direction */
175    inline float getRelDir2D () const { return this->prevRelDirection; };
176    /** @returns the Relative Directional Destination */
177    inline float getRelDirSoft2D() const { return (this->toDirection)?*this->toDirection:this->relDirection; };
178    void setAbsDir2D (float absDir);
179    void setAbsDirSoft2D (float absDirSoft, float bias = 1.0);
180    /** @returns the absolute Direction */
181    inline float getAbsDir2D () const { return this->absDirection; };
182    void shiftDir2D (float shiftDir);
183
184    /** @returns the Speed of the Node */
185    inline float getSpeed() const { return 0; };
186    /** @returns the Velocity of the Node */
187    inline const Vector2D& getVelocity() const { return this->velocity; };
188
189
190    void addChild2D (Element2D* child);
191    void addChild2D (const std::string& childName);
192    void removeChild2D (Element2D* child);
193    void remove2D();
194
195    /** @param parent the new parent of this Element2D */
196    void setParent2D (Element2D* parent) { parent->addChild2D(this); };
197    void setParent2D (const std::string& parentName);
198    /** @returns the parent of this Element2D */
199    inline Element2D* getParent2D () const { return this->parent; };
200    /** @returns the List of Children of this Element2D */
201    inline const std::list<Element2D*>& getChildren2D() const { return this->children; };
202
203    void setParentSoft2D(Element2D* parentNode, float bias = 1.0);
204    void setParentSoft2D(const std::string& parentName, float bias = 1.0);
205
206    void setParentMode2D (E2D_PARENT_MODE parentMode);
207    void setParentMode2D (const std::string& parentingMode);
208    /** @returns the Parenting mode of this node */
209    int getParentMode2D() const { return this->parentMode; };
210
211    // NULL_PARENT //
212    /** @returns the NullParent, the (main) ROOT of the PNode Tree. If it does not yet exist, it will be created. */
213    static Element2D* getNullElement()  { return (Element2D::nullElement != NULL)? Element2D::nullElement : Element2D::createNullElement(); };
214
215
216    void update2D (float dt);
217
218    void debug2D (unsigned int depth = 1, unsigned int level = 0) const;
219    void debugDraw2D(unsigned int depth = 1, float size = 1.0, Vector color = Vector(1,0,0), unsigned int level = 0) const;
220
221    // helper functions //
222    static const char* parentingModeToString2D(int parentingMode);
223    static E2D_PARENT_MODE stringToParentingMode2D(const std::string& parentingMode);
224
225    static const char* layer2DToChar(E2D_LAYER layer);
226    static E2D_LAYER charToLayer2D(const std::string& layer);
227
228    static bool layerSortPredicate(const Element2D* elem1, const Element2D* elem2);
229
230  private:
231    void eraseChild2D(Element2D* child);
232    /** tells the child that the parent's Coordinate has changed */
233    inline void parentCoorChanged2D () { this->bRelCoorChanged = true; }
234    /** tells the child that the parent's Direction has changed */
235    inline void parentDirChanged2D () { this->bRelDirChanged = true; }
236    /** @returns the last calculated coordinate */
237    inline Vector2D getLastAbsCoor2D() { return this->lastAbsCoordinate; }
238
239    void reparent2D();
240    static Element2D* createNullElement();
241    bool checkIntegrity(const Element2D* checkParent) const;
242
243
244  private:
245    const PNode*            bindNode;           //!< a node over which to display this 2D-element
246    Vector2D                size;               //!< The size of the rendered item
247    Vector2D*               toSize;             //!< The Size to iterate to.
248
249    E2D_ALIGNMENT           alignment;          //!< How the Element is aligned around its Position
250
251    bool                    bVisible;           //!< If the given Element2D is visible.
252    bool                    bCurrentlyVisible;  //!< Evaluated in the TICK process, to see if the Element is Currently visible.
253    bool                    bActive;            //!< If the given Element2D is active.
254    E2D_LAYER               layer;              //!< What layer this Element2D is on.
255
256    bool                    bRelCoorChanged;    //!< If Relative Coordinate has changed since last time we checked
257    bool                    bRelDirChanged;     //!< If Relative Direction has changed since last time we checked
258
259    Vector2D                relCoordinate;      //!< coordinates relative to the parent
260    Vector2D                absCoordinate;      //!< absolute coordinates in the world ( from (0,0,0) )
261    float                   relDirection;       //!< direction relative to the parent
262    float                   absDirection;       //!< absolute diretion in the world ( from (0,0,1) )
263
264    Vector2D                prevRelCoordinate;  //!< The last Relative Coordinate from the last update-Cycle.
265    Vector2D                lastAbsCoordinate;  //!< this is used for speedcalculation, it stores the last coordinate
266    float                   prevRelDirection;   //!< The last Relative Direciton from the last update-Cycle.
267
268    Vector2D                velocity;           //!< Saves the velocity.
269
270    Vector2D*               toCoordinate;       //!< a position to which to iterate. (This is used in conjunction with setParentSoft.and set*CoorSoft)
271    float*                  toDirection;        //!< a direction to which to iterate. (This is used in conjunction with setParentSoft and set*DirSoft)
272    float                   bias;               //!< how fast to iterate to the given position (default is 1)
273
274    Element2D*              parent;             //!< a pointer to the parent node
275    std::list<Element2D*>   children;           //!< list of the children of this Element2D
276
277    unsigned int            parentMode;         //!< the mode of the binding
278
279    static Element2D*       nullElement;        //!< The top-most Element
280};
281
282#endif /* _ELEMENT_2D_H */
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