void DoWork()
{
ANT_Library library;
ANT_Face face;
ANT_GlyphSlot slot;
// transformation matrix
ANT_Matrix matrix = new ANT_Matrix();
// untransformed origin
ANT_Vector pen = new ANT_Vector();
ANT_Error error;
string filename;
string text;
double angle;
int target_height;
int n, num_chars;
filename = Common.Example_AltNETType_FontFileName;
text = "AltNETType = FreeType.NET";
num_chars = text.Length;
// use 25 degrees
angle = (25.0 / 360) * 3.14159 * 2;
target_height = HEIGHT;
// initialize library
error = ANT.ANT_Init_AltNETType(out library);
// error handling omitted
// create face object
error = ANT.ANT_New_Face(library, filename, 0, out face);
// error handling omitted
if (error != ANT_Error.ANT_Err_Ok)
{
return;
}
// use 50pt at 100dpi
// set character size
error = ANT.ANT_Set_Char_Size(face, 50 * 64, 0, 96, 0);
// error handling omitted
slot = face.glyph;
// set up matrix
matrix.xx = (int)(Math.Cos(angle) * 0x10000L);
matrix.xy = (int)(-Math.Sin(angle) * 0x10000L);
matrix.yx = (int)(Math.Sin(angle) * 0x10000L);
matrix.yy = (int)(Math.Cos(angle) * 0x10000L);
// the pen position in 26.6 cartesian space coordinates;
// start at (25, 503) relative to the upper left corner
pen.x = 15 * 64;
pen.y = (target_height - (HEIGHT - 20)) * 64;
for (n = 0; n < num_chars; n++)
{
// set transformation
ANT.ANT_Set_Transform(face, matrix, pen);
// load glyph image into the slot (erase previous one)
error = ANT.ANT_Load_Char(face, text[n], ANT_LOAD.ANT_LOAD_RENDER);
if (error != ANT_Error.ANT_Err_Ok)
{
// ignore errors
continue;
}
// now, draw to our target surface (convert position)
draw_bitmap(slot.bitmap, slot.bitmap_left, target_height - slot.bitmap_top);
// increment pen position
pen.x += slot.advance.x;
pen.y += slot.advance.y;
}
show_image();
ANT.ANT_Done_Face(ref face);
ANT.ANT_Done_AltNETType(ref library);
}