void endPath(PathPtr p) {
if (!path) {
path = glGenPathsNV(1);
}
glPathCommandsNV(path,
GLsizei(cmds.size()), &cmds[0],
GLsizei(coords.size()), GL_FLOAT, &coords[0]);
}
void initTiger()
{
unsigned int i;
tiger_path_base = glGenPathsNV(tiger_path_count);
for (i=0; i<tiger_path_count; i++) {
const char *svg_str = tiger_path[i];
size_t svg_len = strlen(tiger_path[i]);
GLfloat stroke_width = (GLfloat) fabs(tiger_style[i].stroke_width);
glPathStringNV(tiger_path_base+i, GL_PATH_FORMAT_SVG_NV,
(GLsizei)svg_len, svg_str);
glPathParameterfNV(tiger_path_base+i, GL_PATH_STROKE_WIDTH_NV, stroke_width);
}
}
static int morph_shape(NSVGshape *shape, NSVGshape *shape2, float ratio)
{
//render_ctx *ctx = render;
int cmds = 0, coords = 0;
float om_ratio = 1.0f - ratio;
NSVGpath *path, *path2;
for (path = shape->paths; path != NULL; path = path->next)
{
if (path->npts > 2)
{
int ncubic = (path->npts - 1)/3;
cmds += 1 + ncubic;
coords += 2 + ncubic*6;
if (path->closed)
cmds++;
}
}
GLubyte *cmd = (GLubyte *)alloca(cmds*sizeof(GLubyte));
GLfloat *coord = alloca(coords*sizeof(GLfloat));
cmds = 0, coords = 0;
path2 = shape2->paths;
for (path = shape->paths; path != NULL; path = path->next, path2 = path2->next)
{
if (path->npts > 2)
{
cmd[cmds] = GL_MOVE_TO_NV;
int ncubic = (path->npts - 1)/3;
memset(cmd + cmds + 1, GL_CUBIC_CURVE_TO_NV, ncubic);
cmds += 1 + ncubic;
for (int i = 0; i < (2 + ncubic*6); i++)
coord[coords + i] = path->pts[i]*om_ratio + path2->pts[i]*ratio;
coords += 2 + ncubic*6;
if (path->closed)
cmd[cmds++] = GL_CLOSE_PATH_NV;
}
}
GLuint pathObj = glGenPathsNV(1);
glPathCommandsNV(pathObj, cmds, cmd, coords, GL_FLOAT, coord);
return pathObj;
}
static int nvpr_cache_shape(void *render, NSVGshape *shape)
{
//render_ctx *ctx = render;
int cmds = 0, coords = 0;
GLuint pathObj = glGenPathsNV(1);
NSVGpath *path;
for (path = shape->paths; path != NULL; path = path->next)
{
if (path->npts > 2)
{
int ncubic = (path->npts - 1)/3;
cmds += 1 + ncubic;
coords += 2 + ncubic*6;
if (path->closed)
cmds++;
}
}
GLubyte *cmd = (GLubyte *)alloca(cmds*sizeof(GLubyte));
GLfloat *coord = alloca(coords*sizeof(GLfloat));
cmds = 0, coords = 0;
for (path = shape->paths; path != NULL; path = path->next)
{
if (path->npts > 2)
{
cmd[cmds] = GL_MOVE_TO_NV;
int ncubic = (path->npts - 1)/3;
memset(cmd + cmds + 1, GL_CUBIC_CURVE_TO_NV, ncubic);
cmds += 1 + ncubic;
memcpy(coord + coords, path->pts, (2 + ncubic*6)*sizeof(float));
coords += 2 + ncubic*6;
if (path->closed)
cmd[cmds++] = GL_CLOSE_PATH_NV;
}
}
glPathCommandsNV(pathObj, cmds, cmd, coords, GL_FLOAT, coord);
shape->cache = pathObj;
return pathObj;
}
JNIEXPORT jint JNICALL Java_org_lwjgl_opengl_NVPathRendering_nglGenPathsNV(JNIEnv *env, jclass clazz, jint range, jlong function_pointer) {
glGenPathsNVPROC glGenPathsNV = (glGenPathsNVPROC)((intptr_t)function_pointer);
GLuint __result = glGenPathsNV(range);
return __result;
}
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] );
}