initial commit. This is icculus version 5542b94cae02a6333845854bbbd1abe0a259f1a4

2025-08-11 16:59:53 +00:00 · 2011-08-03 22:05:33 +02:00 · 2011-08-03 22:05:33 +02:00 · 3096eaf5e2
commit 3096eaf5e2
2519 changed files with 816064 additions and 0 deletions
--- a/ExternalLibs/FTGL/src/FTVectoriser.cpp
+++ b/ExternalLibs/FTGL/src/FTVectoriser.cpp
@ -0,0 +1,228 @@
+#include    "FTVectoriser.h"
+#include    "FTGL.h"
+
+#ifndef CALLBACK
+#define CALLBACK
+#endif
+
+#if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2))
+    typedef void (*GLUTesselatorFunction)();
+#elif defined(__APPLE_CC__)
+    typedef void (*GLUTesselatorFunction)();
+#elif defined( __mips ) || defined( __linux__ ) || defined( __FreeBSD__ ) || defined( __OpenBSD__ ) || defined( __sun ) || defined (__CYGWIN__)
+    typedef GLvoid (*GLUTesselatorFunction)();
+#elif defined ( WIN32)
+    typedef GLvoid (CALLBACK *GLUTesselatorFunction)( );
+#else
+    #error "Error - need to define type GLUTesselatorFunction for this platform/compiler"
+#endif
+
+
+void CALLBACK ftglError( GLenum errCode, FTMesh* mesh)
+{
+    mesh->Error( errCode);
+}
+
+
+void CALLBACK ftglVertex( void* data, FTMesh* mesh)
+{
+    FTGL_DOUBLE* vertex = static_cast<FTGL_DOUBLE*>(data);
+    mesh->AddPoint( vertex[0], vertex[1], vertex[2]);
+}
+
+
+void CALLBACK ftglCombine( FTGL_DOUBLE coords[3], void* vertex_data[4], GLfloat weight[4], void** outData, FTMesh* mesh)
+{
+    const FTGL_DOUBLE* vertex = static_cast<const FTGL_DOUBLE*>(coords);
+    *outData = const_cast<FTGL_DOUBLE*>(mesh->Combine( vertex[0], vertex[1], vertex[2]));
+}
+        
+
+void CALLBACK ftglBegin( GLenum type, FTMesh* mesh)
+{
+    mesh->Begin( type);
+}
+
+
+void CALLBACK ftglEnd( FTMesh* mesh)
+{
+    mesh->End();
+}
+
+
+FTMesh::FTMesh()
+:	currentTesselation(0),
+    err(0)
+{
+    tesselationList.reserve( 16);
+}
+
+
+FTMesh::~FTMesh()
+{
+    for( size_t t = 0; t < tesselationList.size(); ++t)
+    {
+        delete tesselationList[t];
+    }
+    
+    tesselationList.clear();
+}
+
+
+void FTMesh::AddPoint( const FTGL_DOUBLE x, const FTGL_DOUBLE y, const FTGL_DOUBLE z)
+{
+    currentTesselation->AddPoint( x, y, z);
+}
+
+
+const FTGL_DOUBLE* FTMesh::Combine( const FTGL_DOUBLE x, const FTGL_DOUBLE y, const FTGL_DOUBLE z)
+{
+    tempPointList.push_back( FTPoint( x, y,z));
+    return static_cast<const FTGL_DOUBLE*>(tempPointList.back());
+}
+
+
+void FTMesh::Begin( GLenum meshType)
+{
+    currentTesselation = new FTTesselation( meshType);
+}
+
+
+void FTMesh::End()
+{
+    tesselationList.push_back( currentTesselation);
+}
+
+
+const FTTesselation* const FTMesh::Tesselation( unsigned int index) const
+{
+    return ( index < tesselationList.size()) ? tesselationList[index] : NULL;
+}
+
+
+FTVectoriser::FTVectoriser( const FT_GlyphSlot glyph)
+:   contourList(0),
+    mesh(0),
+    ftContourCount(0),
+    contourFlag(0)
+{
+    if( glyph)
+    {
+        outline = glyph->outline;
+        
+        ftContourCount = outline.n_contours;
+        contourList = 0;
+        contourFlag = outline.flags;
+        
+        ProcessContours();
+    }
+}
+
+
+FTVectoriser::~FTVectoriser()
+{
+    for( size_t c = 0; c < ContourCount(); ++c)
+    {
+        delete contourList[c];
+    }
+
+    delete [] contourList;
+    delete mesh;
+}
+
+
+void FTVectoriser::ProcessContours()
+{
+    short contourLength = 0;
+    short startIndex = 0;
+    short endIndex = 0;
+    
+    contourList = new FTContour*[ftContourCount];
+    
+    for( short contourIndex = 0; contourIndex < ftContourCount; ++contourIndex)
+    {
+        FT_Vector* pointList = &outline.points[startIndex];
+        char* tagList = &outline.tags[startIndex];
+        
+        endIndex = outline.contours[contourIndex];
+        contourLength =  ( endIndex - startIndex) + 1;
+
+        FTContour* contour = new FTContour( pointList, tagList, contourLength);
+        
+        contourList[contourIndex] = contour;
+        
+        startIndex = endIndex + 1;
+    }
+}
+
+
+size_t FTVectoriser::PointCount()
+{
+    size_t s = 0;
+    for( size_t c = 0; c < ContourCount(); ++c)
+    {
+        s += contourList[c]->PointCount();
+    }
+    
+    return s;
+}
+
+
+const FTContour* const FTVectoriser::Contour( unsigned int index) const
+{
+    return ( index < ContourCount()) ? contourList[index] : NULL;
+}
+
+
+void FTVectoriser::MakeMesh( FTGL_DOUBLE zNormal)
+{
+    if( mesh)
+    {
+        delete mesh;
+    }
+        
+    mesh = new FTMesh;
+    
+    GLUtesselator* tobj = gluNewTess();
+
+    gluTessCallback( tobj, GLU_TESS_BEGIN_DATA,     (GLUTesselatorFunction)ftglBegin);
+    gluTessCallback( tobj, GLU_TESS_VERTEX_DATA,    (GLUTesselatorFunction)ftglVertex);
+    gluTessCallback( tobj, GLU_TESS_COMBINE_DATA,   (GLUTesselatorFunction)ftglCombine);
+    gluTessCallback( tobj, GLU_TESS_END_DATA,       (GLUTesselatorFunction)ftglEnd);
+    gluTessCallback( tobj, GLU_TESS_ERROR_DATA,     (GLUTesselatorFunction)ftglError);
+    
+    if( contourFlag & ft_outline_even_odd_fill) // ft_outline_reverse_fill
+    {
+        gluTessProperty( tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
+    }
+    else
+    {
+        gluTessProperty( tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_NONZERO);
+    }
+    
+    
+    gluTessProperty( tobj, GLU_TESS_TOLERANCE, 0);
+    gluTessNormal( tobj, 0.0f, 0.0f, zNormal);
+    gluTessBeginPolygon( tobj, mesh);
+    
+        for( size_t c = 0; c < ContourCount(); ++c)
+        {
+            const FTContour* contour = contourList[c];
+
+            gluTessBeginContour( tobj);
+            
+                for( size_t p = 0; p < contour->PointCount(); ++p)
+                {
+                    const FTGL_DOUBLE* d = contour->Point(p);
+                    gluTessVertex( tobj, (GLdouble*)d, (GLdouble*)d);
+                }
+
+            gluTessEndContour( tobj);
+        }
+        
+    gluTessEndPolygon( tobj);
+
+    gluDeleteTess( tobj);
+}
+
+