void NVPTextBox::render()
{
/* Query spacing information for example's message. */
mMessageLen = strlen ( mText.c_str() );
if ( xtranslate != NULL ) {
free ( xtranslate );
xtranslate = NULL;
}
xtranslate = ( GLfloat* ) malloc ( sizeof ( GLfloat ) * mMessageLen );
if ( !xtranslate ) {
ci::app::console() << " malloc of xtranslate failed" << endl;
exit ( 1 );
}
xtranslate[0] = 0.0; /* Initial xtranslate is zero. */
GLfloat advanceScale = 1.0f * mKerningFactor,
kerningScale = 1.0f * mKerningFactor; /* Set this to zero to ignore kerning. */
glGetPathSpacingNV ( GL_ACCUM_ADJACENT_PAIRS_NV,
( GLsizei ) mMessageLen, GL_UNSIGNED_BYTE, mText.c_str(),
mFont->getGlyphs(),
advanceScale, kerningScale,
GL_TRANSLATE_X_NV,
&xtranslate[1] ); /* messageLen-1 accumulated translates are written here. */
/* Total advance is accumulated spacing plus horizontal advance of
the last glyph */
float lastX = xtranslate[mMessageLen - 1];
const unsigned char* message_ub = ( const unsigned char* ) mText.c_str();
int charIndex = message_ub[mMessageLen - 1];
float totalLen = mFont->getGlyphMetrics()->mHorizontalAdvance[charIndex];
mTotalAdvance = lastX + totalLen;
mXBorder = mTotalAdvance / mMessageLen;
mInitialOffset = mFont->getGlyphMetrics()->mHorizontalBearingX[mText.c_str() [0]];
mInvalid = false;
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_NVPathRendering_nglGetPathSpacingNV(JNIEnv *env, jclass clazz, jint pathListMode, jint numPaths, jint pathNameType, jlong paths, jint pathBase, jfloat advanceScale, jfloat kerningScale, jint transformType, jlong returnedSpacing, jlong function_pointer) {
const GLvoid *paths_address = (const GLvoid *)(intptr_t)paths;
GLfloat *returnedSpacing_address = (GLfloat *)(intptr_t)returnedSpacing;
glGetPathSpacingNVPROC glGetPathSpacingNV = (glGetPathSpacingNVPROC)((intptr_t)function_pointer);
glGetPathSpacingNV(pathListMode, numPaths, pathNameType, paths_address, pathBase, advanceScale, kerningScale, transformType, returnedSpacing_address);
}
