Core/src/FWTextProjected.cc

0001 // -*- C++ -*-
0002 //
0003 // Package:     Core
0004 // Class  :     FWTextProjected
0005 //
0006 // Implementation:
0007 //     [Notes on implementation]
0008 //
0009 // Original Author:  Alja Mrak-Tadel
0010 //         Created:  Fri Aug 12 01:12:18 CEST 2011
0011 //
0012
0013 // system include files
0014
0015 // user include files
0016 #include <iostream>
0017
0018 #include "Fireworks/Core/interface/FWTextProjected.h"
0019 #include "TEveProjectionManager.h"
0020 #include "TEveTrans.h"
0021 #include "TGLBoundingBox.h"
0022
0023 #include "TGLIncludes.h"
0024
0025 #include "TGLRnrCtx.h"
0026 #include "TGLUtil.h"
0027 #include "TGLCamera.h"
0028 //______________________________________________________________________________
0029 TClass* FWEveText::ProjectedClass(const TEveProjection*) const {
0030   // Virtual from TEveProjectable, returns TEvePointSetProjected class.
0031
0032   return FWEveTextProjected::Class();
0033 }
0034
0035 //______________________________________________________________________________
0036 void FWEveTextProjected::UpdateProjection() {
0037   //   printf("update projection \n");
0038
0039   FWEveText& als = *dynamic_cast<FWEveText*>(fProjectable);
0040   TEveTrans* tr = als.PtrMainTrans(kFALSE);
0041
0042   fText = als.GetText();
0043   *fMainColorPtr = als.GetMainColor();
0044   float pos[3];
0045   tr->GetPos(pos);
0046
0047   TEveProjection& proj = *fManager->GetProjection();
0048   proj.ProjectPoint(pos[0], pos[1], pos[2], fDepth);
0049
0050   RefMainTrans().SetPos(pos[0], pos[1], pos[2] + als.m_offsetZ);
0051 }
0052 //==============================================================================
0053
0054 void FWEveTextGL::DirectDraw(TGLRnrCtx& rnrCtx) const {
0055   Int_t fm = fM->GetFontMode();
0056   if (fm == TGLFont::kBitmap || fm == TGLFont::kPixmap || fm == TGLFont::kTexture)
0057     rnrCtx.RegisterFont(fM->GetFontSize(), fM->GetFontFile(), fM->GetFontMode(), fFont);
0058   else
0059     rnrCtx.RegisterFontNoScale(fM->GetFontSize(), fM->GetFontFile(), fM->GetFontMode(), fFont);
0060
0061   // rendering
0062   glPushMatrix();
0063   fFont.PreRender(fM->GetAutoLighting(), fM->GetLighting());
0064
0065   const GLdouble* pm = rnrCtx.RefCamera().RefLastNoPickProjM().CArr();
0066
0067   GLdouble mm[16];
0068   GLint vp[4];
0069   glGetDoublev(GL_MODELVIEW_MATRIX, mm);
0070   glGetIntegerv(GL_VIEWPORT, vp);
0071
0072   fX[0][0] = fX[0][1] = fX[0][2] = 0;
0073   GLdouble x, y, z;
0074   gluProject(fX[0][0], fX[0][1], fX[0][2], mm, pm, vp, &x, &y, &z);
0075   Float_t bbox[6];
0076   fFont.BBox(fM->GetText(), bbox[0], bbox[1], bbox[2], bbox[3], bbox[4], bbox[5]);
0077
0078   gluUnProject(x + bbox[0], y + bbox[1], z, mm, pm, vp, &fX[0][0], &fX[0][1], &fX[0][2]);
0079   gluUnProject(x + bbox[3], y + bbox[1], z, mm, pm, vp, &fX[1][0], &fX[1][1], &fX[1][2]);
0080   gluUnProject(x + bbox[3], y + bbox[4], z, mm, pm, vp, &fX[2][0], &fX[2][1], &fX[2][2]);
0081   gluUnProject(x + bbox[0], y + bbox[4], z, mm, pm, vp, &fX[3][0], &fX[3][1], &fX[3][2]);
0082   glEnable(GL_POLYGON_OFFSET_FILL);
0083
0084   FWEveText* model = (FWEveText*)fM;
0085   double xm = fX[0][0] - model->m_textPad;
0086   double xM = fX[2][0] + model->m_textPad;
0087   double ym = fX[0][1] - model->m_textPad;
0088   double yM = fX[2][1] + model->m_textPad;
0089
0090   //   TGLUtil::Color(1016);
0091   if (rnrCtx.ColorSet().Background().GetRed())
0092     TGLUtil::Color(kWhite);
0093   else
0094     TGLUtil::Color(kBlack);
0095
0096   glPolygonOffset(1, 1);
0097   glBegin(GL_POLYGON);
0098   glVertex2d(xm, ym);
0099   glVertex2d(xM, ym);
0100   glVertex2d(xM, yM);
0101   glVertex2d(xm, yM);
0102
0103   glEnd();
0104
0105   TGLUtil::Color(fM->GetMainColor());
0106   if (true) {
0107     glPolygonOffset(0, 0);
0108     glBegin(GL_LINE_LOOP);
0109     glVertex2d(xm, ym);
0110     glVertex2d(xM, ym);
0111     glVertex2d(xM, yM);
0112     glVertex2d(xm, yM);
0113     glEnd();
0114   }
0115
0116   glPolygonOffset(0, 0);
0117
0118   glRasterPos3i(0, 0, 0);
0119   fFont.Render(fM->GetText());
0120   fFont.PostRender();
0121   glPopMatrix();
0122 }