1 // File: OpenGl_Text.cxx
2 // Created: 13 July 2011
3 // Author: Sergey ZERCHANINOV
4 // Copyright: OPEN CASCADE 2011
6 #include <OpenGl_GlCore11.hxx>
7 #include <OpenGl_Text.hxx>
8 #include <OpenGl_Memory.hxx>
9 #include <OpenGl_AspectText.hxx>
10 #include <OpenGl_Structure.hxx>
12 #include <GL/glu.h> // gluUnProject()
14 /*----------------------------------------------------------------------*/
16 OpenGl_Text::OpenGl_Text (const TCollection_ExtendedString& AText,
17 const Graphic3d_Vertex& APoint,
18 const Standard_Real AHeight,
19 const Graphic3d_HorizontalTextAlignment AHta,
20 const Graphic3d_VerticalTextAlignment AVta)
23 const Techar *str = (const Techar *) AText.ToExtString();
25 //szv: instead of strlen + 1
26 int i = 0; while (str[i++]);
28 wchar_t *wstr = new wchar_t[i];
30 //szv: instead of memcpy
31 i = 0; while (wstr[i++] = (wchar_t)(*str++));
32 if (myString) delete[] myString;
35 Standard_Real X, Y, Z;
36 APoint.Coord(X, Y, Z);
37 myAttachPnt.xyz[0] = float (X);
38 myAttachPnt.xyz[1] = float (Y);
39 myAttachPnt.xyz[2] = float (Z);
41 myParam.Height = int (AHeight);
43 myParam.HAlign = AHta;
44 myParam.VAlign = AVta;
47 /*----------------------------------------------------------------------*/
49 OpenGl_Text::~OpenGl_Text ()
55 /*----------------------------------------------------------------------*/
57 void OpenGl_Text::Render (const Handle(OpenGl_Workspace) &AWorkspace) const
59 if ( AWorkspace->DegenerateModel > 0 && AWorkspace->SkipRatio >= 1.f )
62 const OpenGl_AspectText *aspect_text = AWorkspace->AspectText( Standard_True );
64 const TEL_COLOUR *tcolor, *scolor;
66 // Use highlight colours
67 if( AWorkspace->NamedStatus & OPENGL_NS_HIGHLIGHT )
69 tcolor = scolor = AWorkspace->HighlightColor;
73 tcolor = &aspect_text->Color();
74 scolor = &aspect_text->SubtitleColor();
77 // Handle annotation style
78 GLboolean flag_zbuffer = GL_FALSE;
79 if (aspect_text->StyleType() == Aspect_TOST_ANNOTATION)
81 flag_zbuffer = glIsEnabled(GL_DEPTH_TEST);
82 if (flag_zbuffer) glDisable(GL_DEPTH_TEST);
85 AWorkspace->SetTextParam(&myParam);
87 GLdouble modelMatrix[16], projMatrix[16];
89 GLdouble objrefX, objrefY, objrefZ;
90 GLdouble objX, objY, objZ;
91 GLdouble obj1X, obj1Y, obj1Z;
92 GLdouble obj2X, obj2Y, obj2Z;
93 GLdouble obj3X, obj3Y, obj3Z;
94 GLdouble winx1, winy1, winz1;
95 GLdouble winx, winy, winz;
98 /* display type of text */
99 if (aspect_text->DisplayType() != Aspect_TODT_NORMAL)
101 /* Optimisation: il faudrait ne faire le Get qu'une fois par Redraw */
102 glGetIntegerv (GL_VIEWPORT, viewport);
103 glGetDoublev (GL_MODELVIEW_MATRIX, modelMatrix);
104 glGetDoublev (GL_PROJECTION_MATRIX, projMatrix);
106 switch (aspect_text->DisplayType())
108 case Aspect_TODT_BLEND:
109 glEnable(GL_COLOR_LOGIC_OP);
112 case Aspect_TODT_SUBTITLE:
114 int sWidth, sAscent, sDescent;
115 AWorkspace->StringSize(myString, sWidth, sAscent, sDescent);
117 objrefX = (float)myAttachPnt.xyz[0];
118 objrefY = (float)myAttachPnt.xyz[1];
119 objrefZ = (float)myAttachPnt.xyz[2];
120 status = gluProject (objrefX, objrefY, objrefZ, modelMatrix, projMatrix, viewport,
121 &winx1, &winy1, &winz1);
124 winy = winy1-sDescent;
125 winz = winz1+0.00001;
126 status = gluUnProject (winx, winy, winz, modelMatrix, projMatrix, viewport,
127 &objX, &objY, &objZ);
129 winx = winx1 + sWidth;
130 winy = winy1-sDescent;
131 winz = winz1+0.00001; /* il vaut mieux F+B / 1000000 ? */
132 status = gluUnProject (winx, winy, winz, modelMatrix, projMatrix, viewport,
133 &obj1X, &obj1Y, &obj1Z);
135 winx = winx1 + sWidth;
136 winy = winy1 + sAscent;
137 winz = winz1+0.00001;
138 status = gluUnProject (winx, winy, winz, modelMatrix, projMatrix, viewport,
139 &obj2X, &obj2Y, &obj2Z);
142 winy = winy1+ sAscent;
143 winz = winz1+0.00001;
144 status = gluUnProject (winx, winy, winz, modelMatrix, projMatrix, viewport,
145 &obj3X, &obj3Y, &obj3Z);
147 glColor3fv( scolor->rgb );
149 glVertex3d(objX, objY, objZ);
150 glVertex3d(obj1X, obj1Y, obj1Z);
151 glVertex3d(obj2X, obj2Y, obj2Z);
152 glVertex3d(obj3X, obj3Y, obj3Z);
157 case Aspect_TODT_DEKALE:
158 objrefX = (float)myAttachPnt.xyz[0];
159 objrefY = (float)myAttachPnt.xyz[1];
160 objrefZ = (float)myAttachPnt.xyz[2];
161 status = gluProject (objrefX, objrefY, objrefZ, modelMatrix, projMatrix, viewport,
162 &winx1, &winy1, &winz1);
166 winz = winz1+0.00001;
167 status = gluUnProject (winx, winy, winz, modelMatrix, projMatrix, viewport,
168 &objX, &objY, &objZ);
170 glColor3fv( scolor->rgb );
171 AWorkspace->RenderText( myString, 0, (float)objX, (float)objY,(float)objZ );
174 status = gluUnProject (winx, winy, winz, modelMatrix, projMatrix, viewport,
175 &objX, &objY, &objZ);
177 AWorkspace->RenderText( myString, 0, (float)objX, (float)objY,(float)objZ );
180 status = gluUnProject (winx, winy, winz, modelMatrix, projMatrix, viewport,
181 &objX, &objY, &objZ);
183 AWorkspace->RenderText( myString, 0, (float)objX, (float)objY,(float)objZ );
186 status = gluUnProject (winx, winy, winz, modelMatrix, projMatrix, viewport,
187 &objX, &objY, &objZ);
188 AWorkspace->RenderText( myString, 0, (float)objX, (float)objY,(float)objZ );
193 glColor3fv( tcolor->rgb );
194 AWorkspace->RenderText( myString, 0, (float)myAttachPnt.xyz[0], (float)myAttachPnt.xyz[1],(float)myAttachPnt.xyz[2] );
196 if (flag_zbuffer) glEnable(GL_DEPTH_TEST);
197 if (aspect_text->DisplayType() == Aspect_TODT_BLEND)
199 glDisable(GL_COLOR_LOGIC_OP);
203 /*----------------------------------------------------------------------*/