1 // Created on: 1991-09-06
2 // Created by: NW,JPB,CAL
3 // Copyright (c) 1991-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _Graphic3d_Group_HeaderFile
18 #define _Graphic3d_Group_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_Type.hxx>
23 #include <Graphic3d_CBitFields4.hxx>
24 #include <Graphic3d_StructurePtr.hxx>
25 #include <Graphic3d_BndBox4f.hxx>
26 #include <Standard_Boolean.hxx>
27 #include <Graphic3d_AspectLine3d.hxx>
28 #include <Graphic3d_AspectFillArea3d.hxx>
29 #include <Graphic3d_AspectText3d.hxx>
30 #include <Graphic3d_AspectMarker3d.hxx>
31 #include <MMgt_TShared.hxx>
32 #include <Standard_Real.hxx>
33 #include <Standard_CString.hxx>
34 #include <Graphic3d_Vertex.hxx>
35 #include <Quantity_PlaneAngle.hxx>
36 #include <Graphic3d_TextPath.hxx>
37 #include <Graphic3d_HorizontalTextAlignment.hxx>
38 #include <Graphic3d_VerticalTextAlignment.hxx>
39 #include <Graphic3d_TypeOfPrimitiveArray.hxx>
40 #include <Graphic3d_IndexBuffer.hxx>
41 #include <Graphic3d_Buffer.hxx>
42 #include <Graphic3d_BoundBuffer.hxx>
43 #include <Standard_Address.hxx>
44 #include <Graphic3d_GroupAspect.hxx>
46 #include <TCollection_ExtendedString.hxx>
48 class Graphic3d_Structure;
49 class Graphic3d_GroupDefinitionError;
50 class Standard_OutOfRange;
51 class Graphic3d_ArrayOfPrimitives;
54 class Graphic3d_Group;
55 DEFINE_STANDARD_HANDLE(Graphic3d_Group, MMgt_TShared)
57 //! This class allows the definition of groups
58 //! of primitives inside of graphic objects (presentations).
59 //! A group contains the primitives and attributes
60 //! for which the range is limited to this group.
61 //! The primitives of a group can be globally suppressed.
63 //! There are two main group usage models:
65 //! 1) Non-modifiable, or unbounded, group ('black box').
66 //! Developers can repeat a sequence of
67 //! SetPrimitivesAspect() with AddPrimitiveArray() methods arbitrary number of times
68 //! to define arbitrary number of primitive "blocks" each having individual apect values.
69 //! Any modification of such a group is forbidden, as aspects and primitives are mixed
70 //! in memory without any high-level logical structure, and any modification is very likely to result
71 //! in corruption of the group internal data.
72 //! It is necessary to recreate such a group as a whole when some attribute should be changed.
73 //! (for example, in terms of AIS it is necessary to re-Compute() the whole presentation each time).
74 //! 2) Bounded group. Developers should specify the necessary group aspects with help of
75 //! SetGroupPrimitivesAspect() and then add primitives to the group.
76 //! Such a group have simplified organization in memory (a single block of attributes
77 //! followed by a block of primitives) and therefore it can be modified, if it is necessary to
78 //! change parameters of some aspect that has already been set, using methods:
79 //! IsGroupPrimitivesAspectSet() to detect which aspect was set for primitives;
80 //! GroupPrimitivesAspect() to read current aspect values
81 //! and SetGroupPrimitivesAspect() to set new values.
83 //! Developers are strongly recommended to take all the above into account when filling Graphic3d_Group
84 //! with aspects and primitives and choose the group usage model beforehand out of application needs.
85 //! Note that some Graphic3d_Group class virtual methods contain only base implementation
86 //! that is extended by the descendant class in OpenGl package.
87 class Graphic3d_Group : public MMgt_TShared
93 //! Supress all primitives and attributes of <me>.
94 //! To clear group without update in Graphic3d_StructureManager
95 //! pass Standard_False as <theUpdateStructureMgr>. This
96 //! used on context and viewer destruction, when the pointer
97 //! to structure manager in Graphic3d_Structure could be
98 //! already released (pointers are used here to avoid handle
100 Standard_EXPORT virtual void Clear (const Standard_Boolean theUpdateStructureMgr = Standard_True);
102 //! Supress the group <me> in the structure.
103 Standard_EXPORT void Destroy();
109 //! Supress the group <me> in the structure.
110 //! Warning: No more graphic operations in <me> after this call.
111 //! Modifies the current modelling transform persistence (pan, zoom or rotate)
112 //! Get the current modelling transform persistence (pan, zoom or rotate)
113 Standard_EXPORT void Remove();
115 //! Return line aspect.
116 virtual Handle(Graphic3d_AspectLine3d) LineAspect() const = 0;
118 //! Assign line aspect to the group.
119 virtual void SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectLine3d)& theAspect) = 0;
121 //! Return fill area aspect.
122 virtual Handle(Graphic3d_AspectFillArea3d) FillAreaAspect() const = 0;
124 //! Modifies the context for all the face primitives of the group.
125 virtual void SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectFillArea3d)& theAspect) = 0;
127 //! Return text aspect.
128 virtual Handle(Graphic3d_AspectText3d) TextAspect() const = 0;
130 //! Modifies the context for all the text primitives of the group.
131 virtual void SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectText3d)& theAspect) = 0;
133 //! Return marker aspect.
134 virtual Handle(Graphic3d_AspectMarker3d) MarkerAspect() const = 0;
136 //! Modifies the context for all the marker primitives of the group.
137 virtual void SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectMarker3d)& theAspect) = 0;
139 //! Modifies the current context of the group to give
140 //! another aspect for all the line primitives created
141 //! after this call in the group.
142 virtual void SetPrimitivesAspect (const Handle(Graphic3d_AspectLine3d)& theAspect) = 0;
144 //! Modifies the current context of the group to give
145 //! another aspect for all the face primitives created
146 //! after this call in the group.
147 virtual void SetPrimitivesAspect (const Handle(Graphic3d_AspectFillArea3d)& theAspect) = 0;
149 //! Modifies the current context of the group to give
150 //! another aspect for all the text primitives created
151 //! after this call in the group.
152 virtual void SetPrimitivesAspect (const Handle(Graphic3d_AspectText3d)& theAspect) = 0;
154 //! Modifies the current context of the group to give
155 //! another aspect for all the marker primitives created
156 //! after this call in the group.
157 virtual void SetPrimitivesAspect (const Handle(Graphic3d_AspectMarker3d)& theAspect) = 0;
159 //! Sets the coordinates of the boundary box of the
161 Standard_EXPORT void SetMinMaxValues (const Standard_Real XMin, const Standard_Real YMin, const Standard_Real ZMin, const Standard_Real XMax, const Standard_Real YMax, const Standard_Real ZMax);
163 //! Creates the string <AText> at position <APoint>.
164 //! The 3D point of attachment is projected. The text is
165 //! written in the plane of projection.
166 //! The attributes are given with respect to the plane of
168 //! AHeight : Height of text.
169 //! (Relative to the Normalized Projection
170 //! Coordinates (NPC) Space).
171 //! AAngle : Orientation of the text
172 //! (with respect to the horizontal).
173 Standard_EXPORT virtual void Text (const Standard_CString AText, const Graphic3d_Vertex& APoint, const Standard_Real AHeight, const Quantity_PlaneAngle AAngle, const Graphic3d_TextPath ATp, const Graphic3d_HorizontalTextAlignment AHta, const Graphic3d_VerticalTextAlignment AVta, const Standard_Boolean EvalMinMax = Standard_True);
175 //! Creates the string <AText> at position <APoint>.
176 //! The 3D point of attachment is projected. The text is
177 //! written in the plane of projection.
178 //! The attributes are given with respect to the plane of
180 //! AHeight : Height of text.
181 //! (Relative to the Normalized Projection
182 //! Coordinates (NPC) Space).
183 //! The other attributes have the following default values:
187 //! AVta : VTA_BOTTOM
188 Standard_EXPORT void Text (const Standard_CString AText, const Graphic3d_Vertex& APoint, const Standard_Real AHeight, const Standard_Boolean EvalMinMax = Standard_True);
190 //! Creates the string <AText> at position <APoint>.
191 //! The 3D point of attachment is projected. The text is
192 //! written in the plane of projection.
193 //! The attributes are given with respect to the plane of
195 //! AHeight : Height of text.
196 //! (Relative to the Normalized Projection
197 //! Coordinates (NPC) Space).
198 //! AAngle : Orientation of the text
199 //! (with respect to the horizontal).
200 Standard_EXPORT void Text (const TCollection_ExtendedString& AText, const Graphic3d_Vertex& APoint, const Standard_Real AHeight, const Quantity_PlaneAngle AAngle, const Graphic3d_TextPath ATp, const Graphic3d_HorizontalTextAlignment AHta, const Graphic3d_VerticalTextAlignment AVta, const Standard_Boolean EvalMinMax = Standard_True);
202 //! Creates the string <AText> at position <APoint>.
203 //! The 3D point of attachment is projected. The text is
204 //! written in the plane of projection.
205 //! The attributes are given with respect to the plane of
207 //! AHeight : Height of text.
208 //! (Relative to the Normalized Projection
209 //! Coordinates (NPC) Space).
210 //! The other attributes have the following default values:
214 //! AVta : VTA_BOTTOM
215 Standard_EXPORT void Text (const TCollection_ExtendedString& AText, const Graphic3d_Vertex& APoint, const Standard_Real AHeight, const Standard_Boolean EvalMinMax = Standard_True);
217 //! Creates the string <theText> at orientation <theOrientation> in 3D space.
218 Standard_EXPORT virtual void Text (const Standard_CString theTextUtf,
219 const gp_Ax2& theOrientation,
220 const Standard_Real theHeight,
221 const Quantity_PlaneAngle theAngle,
222 const Graphic3d_TextPath theTp,
223 const Graphic3d_HorizontalTextAlignment theHTA,
224 const Graphic3d_VerticalTextAlignment theVTA,
225 const Standard_Boolean theToEvalMinMax = Standard_True,
226 const Standard_Boolean theHasOwnAnchor = Standard_True);
228 //! Creates the string <theText> at orientation <theOrientation> in 3D space.
229 Standard_EXPORT virtual void Text (const TCollection_ExtendedString& theText,
230 const gp_Ax2& theOrientation,
231 const Standard_Real theHeight,
232 const Quantity_PlaneAngle theAngle,
233 const Graphic3d_TextPath theTp,
234 const Graphic3d_HorizontalTextAlignment theHTA,
235 const Graphic3d_VerticalTextAlignment theVTA,
236 const Standard_Boolean theToEvalMinMax = Standard_True,
237 const Standard_Boolean theHasOwnAnchor = Standard_True);
240 //! Adds an array of primitives for display
241 Standard_EXPORT virtual void AddPrimitiveArray (const Graphic3d_TypeOfPrimitiveArray theType, const Handle(Graphic3d_IndexBuffer)& theIndices, const Handle(Graphic3d_Buffer)& theAttribs, const Handle(Graphic3d_BoundBuffer)& theBounds, const Standard_Boolean theToEvalMinMax = Standard_True);
243 //! Adds an array of primitives for display
244 Standard_EXPORT void AddPrimitiveArray (const Handle(Graphic3d_ArrayOfPrimitives)& thePrim, const Standard_Boolean theToEvalMinMax = Standard_True);
246 //! Creates a primitive array with single marker using AddPrimitiveArray().
247 Standard_EXPORT void Marker (const Graphic3d_Vertex& thePoint, const Standard_Boolean theToEvalMinMax = Standard_True);
249 //! sets the stencil test to theIsEnabled state;
250 Standard_EXPORT virtual void SetStencilTestOptions (const Standard_Boolean theIsEnabled) = 0;
252 //! sets the flipping to theIsEnabled state.
253 Standard_EXPORT virtual void SetFlippingOptions (const Standard_Boolean theIsEnabled, const gp_Ax2& theRefPlane) = 0;
255 //! Returns TRUE if aspect is set for the group.
256 Standard_EXPORT Standard_Boolean IsGroupPrimitivesAspectSet (const Graphic3d_GroupAspect theAspect) const;
258 //! Returns the context of all the primitives of the group.
259 Standard_EXPORT void GroupPrimitivesAspect (const Handle(Graphic3d_AspectLine3d)& CTXL, const Handle(Graphic3d_AspectText3d)& CTXT, const Handle(Graphic3d_AspectMarker3d)& CTXM, const Handle(Graphic3d_AspectFillArea3d)& CTXF) const;
261 //! Returns the last inserted context in the group <me>
262 //! foreach kind of primitives.
263 Standard_EXPORT void PrimitivesAspect (const Handle(Graphic3d_AspectLine3d)& CTXL, const Handle(Graphic3d_AspectText3d)& CTXT, const Handle(Graphic3d_AspectMarker3d)& CTXM, const Handle(Graphic3d_AspectFillArea3d)& CTXF) const;
265 //! Returns Standard_True if the group <me> contains
266 //! Polygons, Triangles or Quadrangles.
267 Standard_EXPORT Standard_Boolean ContainsFacet() const;
269 //! Returns Standard_True if the group <me> is deleted.
270 //! <me> is deleted after the call Remove (me) or the
271 //! associated structure is deleted.
272 Standard_EXPORT Standard_Boolean IsDeleted() const;
274 //! Returns Standard_True if the group <me> is empty.
275 Standard_EXPORT Standard_Boolean IsEmpty() const;
277 //! Returns the coordinates of the boundary box of the
279 Standard_EXPORT void MinMaxValues (Standard_Real& XMin, Standard_Real& YMin, Standard_Real& ZMin, Standard_Real& XMax, Standard_Real& YMax, Standard_Real& ZMax) const;
281 //! Returns boundary box of the group <me> without transformation applied,
282 const Graphic3d_BndBox4f& BoundingBox() const { return myBounds; }
284 //! Returns non-const boundary box of the group <me> without transformation applied,
285 Graphic3d_BndBox4f& ChangeBoundingBox() { return myBounds; }
287 //! Returns the structure containing the group <me>.
288 Standard_EXPORT Handle(Graphic3d_Structure) Structure() const;
290 //! Changes property shown that primitive arrays within this group form closed volume (do no contain open shells).
291 void SetClosed (const bool theIsClosed) { myIsClosed = theIsClosed; }
293 //! Return true if primitive arrays within this graphic group form closed volume (do no contain open shells).
294 bool IsClosed() const { return myIsClosed; }
296 friend class Graphic3d_Structure;
299 DEFINE_STANDARD_RTTIEXT(Graphic3d_Group,MMgt_TShared)
304 //! Creates a group in the structure <AStructure>.
305 Standard_EXPORT Graphic3d_Group(const Handle(Graphic3d_Structure)& theStructure);
307 Graphic3d_CBitFields4 myCBitFields;
308 Graphic3d_StructurePtr myStructure;
309 Graphic3d_BndBox4f myBounds;
315 //! Returns the extreme coordinates found in the group.
316 Standard_EXPORT void MinMaxCoord (Standard_Real& XMin, Standard_Real& YMin, Standard_Real& ZMin, Standard_Real& XMax, Standard_Real& YMax, Standard_Real& ZMax) const;
318 //! Calls the Update method of the StructureManager which
319 //! contains the associated Structure of the Group <me>.
320 Standard_EXPORT void Update() const;
332 #endif // _Graphic3d_Group_HeaderFile