void endPath(PathPtr p) {
if (!path) {
path = glGenPathsNV(1);
}
glPathCommandsNV(path,
GLsizei(cmds.size()), &cmds[0],
GLsizei(coords.size()), GL_FLOAT, &coords[0]);
}
void flush(GLuint path)
{
glPathCommandsNV
(
path,
GLsizei(commands.size()),
commands.data(),
GLsizei(points.size() << 1),
GL_FLOAT,
points.data()
);
commands.clear();
points.clear();
}
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;
}
void agg_renderer<T>::process(shield_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
for (std::list<feature_ptr>::iterator f = featureList_->begin(); f != featureList_->end(); f++) {
feature_ptr featurePtr = *f;
shield_symbolizer_helper<face_manager<freetype_engine>,
label_collision_detector4> helper(
sym, *featurePtr, prj_trans,
width_, height_,
scale_factor_,
t_, font_manager_, *detector_,
query_extent_);
text_renderer<T> ren(*current_buffer_,
font_manager_,
*(font_manager_.get_stroker()),
sym.comp_op(),
scale_factor_);
while (helper.next())
{
placements_type const& placements = helper.placements();
for (unsigned int ii = 0; ii < placements.size(); ++ii)
{
// get_marker_position returns (minx,miny) corner position,
// while (currently only) agg_renderer::render_marker newly
// expects center position;
// until all renderers and shield_symbolizer_helper are
// modified accordingly, we must adjust the position here
pixel_position pos = helper.get_marker_position(placements[ii]);
// pos.x += 0.5 * helper.get_marker_width();
// pos.y += 0.5 * helper.get_marker_height();
// render_marker(pos,
// helper.get_marker(),
// helper.get_image_transform(),
// sym.get_opacity(),
// sym.comp_op());
marker const& marker_ = helper.get_marker();
image_data_32 const& src = **marker_.get_bitmap_data();
double width = src.width();
double height = src.height();
const double shifted = 0;
double markerX = pos.x + shifted, markerY = height_ - pos.y - shifted - height;
glMatrixLoadIdentityEXT(GL_PROJECTION);
glMatrixOrthoEXT(GL_PROJECTION, 0, width_, height_, 0, -1, 1);
glMatrixLoadIdentityEXT(GL_MODELVIEW);
GLubyte cmd[5];
GLfloat coord[8];
int m = 0, n = 0;
cmd[m++] = GL_MOVE_TO_NV;
coord[n++] = markerX;
coord[n++] = markerY;
cmd[m++] = GL_LINE_TO_NV;
coord[n++] = markerX + width;
coord[n++] = markerY;
cmd[m++] = GL_LINE_TO_NV;
coord[n++] = markerX + width;
coord[n++] = markerY + height;
cmd[m++] = GL_LINE_TO_NV;
coord[n++] = markerX;
coord[n++] = markerY + height;
cmd[m++] = GL_CLOSE_PATH_NV;
glPathCommandsNV(pathObject_, m, cmd, n, GL_FLOAT, coord);
// glStencilFunc(GL_NOTEQUAL, 0, 0x1F);
// glStencilOp(GL_KEEP, GL_KEEP, GL_ZERO);
//makeFaceTexture(TEXTURE_FACE);
static GLuint texName;
glGenTextures(1, &texName);
glBindTexture(GL_TEXTURE_2D, texName);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, (unsigned char *)src.getBytes());
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
GLfloat data[2][3] = { { 1,0,0 }, /* s = 1*x + 0*y + 0 */
{ 0,1,0 } }; /* t = 0*x + 1*y + 0 */
//glEnable(GL_STENCIL_TEST);
//glColor3f(1,1,1);
glEnable(GL_TEXTURE_2D);
glPathTexGenNV(GL_TEXTURE0, GL_PATH_OBJECT_BOUNDING_BOX_NV, 2, &data[0][0]);
glStencilFillPathNV(pathObject_, GL_COUNT_UP_NV, 0x1F);
glCoverFillPathNV(pathObject_, GL_BOUNDING_BOX_NV);
glDisable(GL_TEXTURE_2D);
pathObject_++;
//Text rendering
//ren.prepare_glyphs(placements[ii]);
//ren.render(placements[ii].center);
const int size = placements[ii].num_nodes();
int strokeEnable = 0;
char word[size];
unsigned red,green,blue,alpha;
double textWidth = 0;
double textHeight = 0;
color textColor,strokeColor;
double opacity = 0.0;
for (int i = 0; i < placements[ii].num_nodes(); i++)
{
char_info_ptr c;
double x, y, angle;
placements[ii].vertex(&c, &x, &y, &angle);
word[i] = (char)c->c;
textWidth += c->width;
textHeight = c->height();
double halo_radius = c->format->halo_radius;
if (halo_radius > 0.0 && halo_radius < 1024.0){
strokeEnable = 1;
// red = c->format->halo_fill.red();
// green = c->format->halo_fill.green();
// blue = c->format->halo_fill.blue();
// alpha = c->format->halo_fill.alpha();
strokeColor = c->format->halo_fill;
}
textColor = c->format->fill;
opacity = c->format->text_opacity;
}
double posX = placements[ii].center.x, posY = placements[ii].center.y;
int centerText = textWidth / 2;
double posTextY = height_ - markerY - (height)/2;
double posTextX = posX - centerText;
if(posTextY <= height_ / 2) posTextY -= 5;
if(posTextX >= width_ / 2) posTextX += 5;
if(!strokeEnable){
render_text(size, word, posTextX, posTextY,textColor, opacity);
}
if(strokeEnable){
render_text(size, word, posTextX, posTextY,textColor,strokeColor,opacity);
}
}
}
}
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_NVPathRendering_nglPathCommandsNV(JNIEnv *env, jclass clazz, jint path, jint numCommands, jlong commands, jint numCoords, jint coordType, jlong coords, jlong function_pointer) {
const GLubyte *commands_address = (const GLubyte *)(intptr_t)commands;
const GLvoid *coords_address = (const GLvoid *)(intptr_t)coords;
glPathCommandsNVPROC glPathCommandsNV = (glPathCommandsNVPROC)((intptr_t)function_pointer);
glPathCommandsNV(path, numCommands, commands_address, numCoords, coordType, coords_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] );
}
