JNIEXPORT void JNICALL Java_org_lwjgl_opengl_NVPathRendering_nglGetPathMetricRangeNV(JNIEnv *env, jclass clazz, jint metricQueryMask, jint fistPathName, jint numPaths, jint stride, jlong metrics, jlong function_pointer) {
GLfloat *metrics_address = (GLfloat *)(intptr_t)metrics;
glGetPathMetricRangeNVPROC glGetPathMetricRangeNV = (glGetPathMetricRangeNVPROC)((intptr_t)function_pointer);
glGetPathMetricRangeNV(metricQueryMask, fistPathName, numPaths, stride, metrics_address);
}
void NVPFont::createGlyphs()
{
if ( mGlyphBase != 0 ) {
glDeletePathsNV ( mGlyphBase, 1+numChars );
}
mGlyphBase = 0;
mPathTemplate = 0;
/* Create a range of path objects corresponding to Latin-1 character codes. */
mGlyphBase = glGenPathsNV ( 1+numChars );
/* Use the path object at the end of the range as a template. */
mPathTemplate = mGlyphBase;
//set stroke width of path as percentage of emscale
glPathCommandsNV ( mPathTemplate, 0, NULL, 0, GL_FLOAT, NULL );
glPathParameteriNV ( mPathTemplate, GL_PATH_STROKE_WIDTH_NV, GLint ( mStrokeWidth * mEmScale ) );
glPathParameteriNV ( mPathTemplate, GL_PATH_JOIN_STYLE_NV, GL_ROUND_NV );
//attempt to load glyphs from mFontname system font. If mFontName can't be found then load Arial. if Arial can't be found
//then load the default sans system font
glPathGlyphRangeNV ( mGlyphBase, mSystemFont ? GL_SYSTEM_FONT_NAME_NV : GL_FILE_NAME_NV, mFontName.c_str(), GL_NONE,
0, numChars,
GL_SKIP_MISSING_GLYPH_NV, mPathTemplate, GLfloat ( mEmScale ) );
glPathGlyphRangeNV ( mGlyphBase, GL_SYSTEM_FONT_NAME_NV, "Arial", GL_NONE,
0, numChars,
GL_SKIP_MISSING_GLYPH_NV, mPathTemplate, GLfloat ( mEmScale ) );
glPathGlyphRangeNV ( mGlyphBase, GL_STANDARD_FONT_NAME_NV, "Sans", GL_NONE,
0, numChars, GL_USE_MISSING_GLYPH_NV, mPathTemplate, GLfloat ( mEmScale ) );
float font_data[4];
glGetPathMetricRangeNV ( GL_FONT_Y_MIN_BOUNDS_BIT_NV | GL_FONT_Y_MAX_BOUNDS_BIT_NV |
GL_FONT_UNDERLINE_POSITION_BIT_NV | GL_FONT_UNDERLINE_THICKNESS_BIT_NV,
mGlyphBase + ' ', /*count*/1,
4 * sizeof ( GLfloat ),
font_data );
mFontMetrics.mYMin = font_data[0];
mFontMetrics.mYMax = font_data[1];
mFontMetrics.mUnderlinePosition = font_data[2];
mFontMetrics.mUnderlineThickness = font_data[3];
glGetPathMetricRangeNV ( GL_FONT_X_MIN_BOUNDS_BIT_NV | GL_FONT_X_MAX_BOUNDS_BIT_NV |
GL_FONT_UNITS_PER_EM_BIT_NV | GL_FONT_ASCENDER_BIT_NV,
mGlyphBase + ' ', /*count*/1,
4 * sizeof ( GLfloat ),
font_data );
mFontMetrics.mXMin = font_data[0];
mFontMetrics.mXMax = font_data[1];
mFontMetrics.mEmUnits = font_data[2];
mFontMetrics.mAscender = font_data[3];
glGetPathMetricRangeNV ( GL_FONT_DESCENDER_BIT_NV | GL_FONT_HEIGHT_BIT_NV | GL_FONT_MAX_ADVANCE_WIDTH_BIT_NV | GL_FONT_MAX_ADVANCE_HEIGHT_BIT_NV,
mGlyphBase + ' ', /*count*/1,
4 * sizeof ( GLfloat ),
font_data );
mFontMetrics.mDescender = font_data[0];
mFontMetrics.mFontHeight = font_data[1];
mFontMetrics.mMaxAdvanceWidth = font_data[2];
mFontMetrics.mMaxAdvanceHeight = font_data[3];
GLfloat glyphMetrics[256];
mGlyphMetrics = GlyphMetrics::create();
//collect glyph metrics
glGetPathMetricRangeNV ( GL_GLYPH_HORIZONTAL_BEARING_ADVANCE_BIT_NV,
mGlyphBase, numChars,
0, /* stride of zero means sizeof(GLfloat) since 1 bit in mask */
glyphMetrics );
mGlyphMetrics->mHorizontalAdvance = std::vector<float> ( glyphMetrics, glyphMetrics + sizeof glyphMetrics / sizeof glyphMetrics[0] );
glGetPathMetricRangeNV ( GL_GLYPH_VERTICAL_BEARING_ADVANCE_BIT_NV,
mGlyphBase, numChars,
0, /* stride of zero means sizeof(GLfloat) since 1 bit in mask */
glyphMetrics );
mGlyphMetrics->mVerticalAdvance = std::vector<float> ( glyphMetrics, glyphMetrics + sizeof glyphMetrics / sizeof glyphMetrics[0] );
glGetPathMetricRangeNV ( GL_GLYPH_WIDTH_BIT_NV,
mGlyphBase, numChars,
0, /* stride of zero means sizeof(GLfloat) since 1 bit in mask */
glyphMetrics );
mGlyphMetrics->mGlyphWidth = std::vector<float> ( glyphMetrics, glyphMetrics + sizeof glyphMetrics / sizeof glyphMetrics[0] );
glGetPathMetricRangeNV ( GL_GLYPH_HEIGHT_BIT_NV,
mGlyphBase, numChars,
0, /* stride of zero means sizeof(GLfloat) since 1 bit in mask */
glyphMetrics );
mGlyphMetrics->mGlyphHeight = std::vector<float> ( glyphMetrics, glyphMetrics + sizeof glyphMetrics / sizeof glyphMetrics[0] );
glGetPathMetricRangeNV ( GL_GLYPH_HORIZONTAL_BEARING_X_BIT_NV,
mGlyphBase, numChars,
0, /* stride of zero means sizeof(GLfloat) since 1 bit in mask */
glyphMetrics );
mGlyphMetrics->mHorizontalBearingX = std::vector<float> ( glyphMetrics, glyphMetrics + sizeof glyphMetrics / sizeof glyphMetrics[0] );
glGetPathMetricRangeNV ( GL_GLYPH_HORIZONTAL_BEARING_Y_BIT_NV,
mGlyphBase, numChars,
0, /* stride of zero means sizeof(GLfloat) since 1 bit in mask */
glyphMetrics );
mGlyphMetrics->mHorizontalBearingY = std::vector<float> ( glyphMetrics, glyphMetrics + sizeof glyphMetrics / sizeof glyphMetrics[0] );
glGetPathMetricRangeNV ( GL_GLYPH_VERTICAL_BEARING_X_BIT_NV,
mGlyphBase, numChars,
0, /* stride of zero means sizeof(GLfloat) since 1 bit in mask */
glyphMetrics );
mGlyphMetrics->mVerticalBearingX = std::vector<float> ( glyphMetrics, glyphMetrics + sizeof glyphMetrics / sizeof glyphMetrics[0] );
glGetPathMetricRangeNV ( GL_GLYPH_VERTICAL_BEARING_Y_BIT_NV,
mGlyphBase, numChars,
0, /* stride of zero means sizeof(GLfloat) since 1 bit in mask */
glyphMetrics );
mGlyphMetrics->mVerticalBearingY = std::vector<float> ( glyphMetrics, glyphMetrics + sizeof glyphMetrics / sizeof glyphMetrics[0] );
}
