float GetStringWidth(string str)
{
TGlyph prevGlyph = null;
float width = 0f;
foreach (char c in str)
{
int charCode = (int)c;
TGlyph glyph = Font.Glyphs.Get(charCode);
if (glyph == null)
{
continue;
}
float kerning = 0f;
if (prevGlyph != null)
{
kerning = prevGlyph.GetKerning(charCode);
}
width += glyph.xAdvance * Size + Tracking + kerning;
prevGlyph = glyph;
}
return(width);
}
void compute_string_bbox(out ANT_BBox abbox)
{
ANT_BBox bbox = new ANT_BBox();
ANT_BBox glyph_bbox = new ANT_BBox();
// initialize string bbox to "empty" values
bbox.xMin = bbox.yMin = 32000;
bbox.xMax = bbox.yMax = -32000;
// for each glyph image, compute its bounding box,
// translate it, and grow the string bbox
for (int n = 0; n < num_glyphs; n++)
{
TGlyph glyph = glyphs[n];
ANT.ANT_Glyph_Get_CBox(glyph.image, ANT_Glyph_BBox_Mode.ANT_GLYPH_BBOX_PIXELS, glyph_bbox);
glyph_bbox.xMin += glyph.pos.x;
glyph_bbox.xMax += glyph.pos.x;
glyph_bbox.yMin += glyph.pos.y;
glyph_bbox.yMax += glyph.pos.y;
if (glyph_bbox.xMin < bbox.xMin)
{
bbox.xMin = glyph_bbox.xMin;
}
if (glyph_bbox.yMin < bbox.yMin)
{
bbox.yMin = glyph_bbox.yMin;
}
if (glyph_bbox.xMax > bbox.xMax)
{
bbox.xMax = glyph_bbox.xMax;
}
if (glyph_bbox.yMax > bbox.yMax)
{
bbox.yMax = glyph_bbox.yMax;
}
}
// check that we really grew the string bbox
if (bbox.xMin > bbox.xMax)
{
bbox.xMin = 0;
bbox.yMin = 0;
bbox.xMax = 0;
bbox.yMax = 0;
}
// return string bbox
abbox = bbox;
}
float BlitString(string str, float cursorX, float cursorY, List <int> vertexPointers = null)
{
TGlyph prevGlyph = null;
foreach (char c in str)
{
int charCode = (int)c;
TGlyph glyph = Font.Glyphs.Get(charCode);
if (glyph == null)
{
continue;
}
if (charCode == 32)
{
cursorX += glyph.xAdvance * Size + Tracking;
continue;
}
float kerning = 0f;
if (prevGlyph != null)
{
kerning = prevGlyph.GetKerning(charCode);
}
if (vertexPointers != null)
{
vertexPointers.Add(m_Vertices.Count);
}
BlitQuad(
new Rect(
cursorX + glyph.xOffset * Size + kerning,
cursorY + glyph.yOffset * Size,
glyph.rect.width * Size,
glyph.rect.height * Size
),
glyph
);
cursorX += glyph.xAdvance * Size + Tracking + kerning;
prevGlyph = glyph;
}
if (cursorX > Width)
{
Width = cursorX;
}
return(cursorX);
}
float GetStringWidth(string str)
{
TGlyph prevGlyph = null;
bool inControlCode = false;
float width = 0f;
foreach (char c in str)
{
int charCode = (int)c;
if (inControlCode)
{
inControlCode = false;
if (charCode >= 48 && charCode <= 57) // 0-9
{
continue;
}
}
else
{
if (charCode == 92) // Backslash
{
inControlCode = true;
continue;
}
}
TGlyph glyph = Font.Glyphs.Get(charCode);
if (glyph == null)
{
continue;
}
float kerning = 0f;
if (prevGlyph != null)
{
kerning = prevGlyph.GetKerning(charCode) * Size;
}
width += glyph.xAdvance * Size + Tracking + kerning;
prevGlyph = glyph;
}
return(width);
}
void parseKernings(XmlNode kerningsNode)
{
foreach (XmlNode node in kerningsNode.ChildNodes)
{
int first = Convert.ToInt32(attribute(node, "first"));
int second = Convert.ToInt32(attribute(node, "second"));
float amount = Convert.ToSingle(attribute(node, "amount")) / Atlas.width * HScale;
TGlyph glyph = Glyphs.Get(first);
KerningDictionary kerning = glyph.kerning;
if (kerning == null)
{
kerning = new KerningDictionary();
glyph.kerning = kerning;
}
kerning.Set(second, amount);
KerningPairs++;
}
}
void BlitQuad(Rect quad, TGlyph glyph)
{
int index = m_Vertices.Count;
Rect uvs = glyph.rect;
m_Vertices.Add(new Vector3(quad.x, -quad.y, 0f));
m_Vertices.Add(new Vector3(quad.x + quad.width, -quad.y, 0f));
m_Vertices.Add(new Vector3(quad.x + quad.width, -quad.y - quad.height, 0f));
m_Vertices.Add(new Vector3(quad.x, -quad.y - quad.height, 0f));
m_UVs.Add(new Vector2(uvs.x / Font.HScale, 1 - uvs.y / Font.VScale));
m_UVs.Add(new Vector2((uvs.x + uvs.width) / Font.HScale, 1 - uvs.y / Font.VScale));
m_UVs.Add(new Vector2((uvs.x + uvs.width) / Font.HScale, 1 - (uvs.y + uvs.height) / Font.VScale));
m_UVs.Add(new Vector2(uvs.x / Font.HScale, 1 - (uvs.y + uvs.height) / Font.VScale));
switch (FillMode)
{
case TFillMode.SingleColor:
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorTopLeft);
break;
case TFillMode.VerticalGradient:
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorBottomLeft);
m_Colors.Add(ColorBottomLeft);
break;
case TFillMode.HorizontalGradient:
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorBottomLeft);
m_Colors.Add(ColorBottomLeft);
m_Colors.Add(ColorTopLeft);
break;
case TFillMode.QuadGradient:
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorTopRight);
m_Colors.Add(ColorBottomRight);
m_Colors.Add(ColorBottomLeft);
break;
case TFillMode.StretchedTexture:
m_UVs2.Add(new Vector2(0f, 1f));
m_UVs2.Add(new Vector2(1f, 1f));
m_UVs2.Add(new Vector2(1f, 0f));
m_UVs2.Add(new Vector2(0f, 0f));
break;
case TFillMode.ProjectedTexture:
float h = uvs.height / Font.LineHeight;
float w = uvs.width / Font.LineHeight;
m_UVs2.Add(new Vector2(glyph.xOffset, h - glyph.yOffset));
m_UVs2.Add(new Vector2(w - glyph.xOffset, h - glyph.yOffset));
m_UVs2.Add(new Vector2(w - glyph.xOffset, glyph.yOffset));
m_UVs2.Add(new Vector2(glyph.xOffset, glyph.yOffset));
break;
default:
break;
}
m_SubmeshTriangles[_currentMaterial].Add(index);
m_SubmeshTriangles[_currentMaterial].Add(index + 1);
m_SubmeshTriangles[_currentMaterial].Add(index + 2);
m_SubmeshTriangles[_currentMaterial].Add(index);
m_SubmeshTriangles[_currentMaterial].Add(index + 2);
m_SubmeshTriangles[_currentMaterial].Add(index + 3);
}
void BlitQuad(Rect quad, TGlyph glyph)
{
int index = m_Vertices.Count;
Rect uvs = glyph.rect;
m_Vertices.Add(new Vector3(quad.x, -quad.y, 0f));
m_Vertices.Add(new Vector3(quad.x + quad.width, -quad.y, 0f));
m_Vertices.Add(new Vector3(quad.x + quad.width, -quad.y - quad.height, 0f));
m_Vertices.Add(new Vector3(quad.x, -quad.y - quad.height, 0f));
m_UVs.Add(new Vector2(uvs.x / Font.HScale, 1 - uvs.y / Font.VScale));
m_UVs.Add(new Vector2((uvs.x + uvs.width) / Font.HScale, 1 - uvs.y / Font.VScale));
m_UVs.Add(new Vector2((uvs.x + uvs.width) / Font.HScale, 1 - (uvs.y + uvs.height) / Font.VScale));
m_UVs.Add(new Vector2(uvs.x / Font.HScale, 1 - (uvs.y + uvs.height) / Font.VScale));
switch (FillMode)
{
case TFillMode.SingleColor:
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorTopLeft);
break;
case TFillMode.VerticalGradient:
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorBottomLeft);
m_Colors.Add(ColorBottomLeft);
break;
case TFillMode.HorizontalGradient:
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorBottomLeft);
m_Colors.Add(ColorBottomLeft);
m_Colors.Add(ColorTopLeft);
break;
case TFillMode.QuadGradient:
m_Colors.Add(ColorTopLeft);
m_Colors.Add(ColorTopRight);
m_Colors.Add(ColorBottomRight);
m_Colors.Add(ColorBottomLeft);
break;
case TFillMode.StretchedTexture:
m_UVs2.Add(new Vector2(0f, 1f));
m_UVs2.Add(new Vector2(1f, 1f));
m_UVs2.Add(new Vector2(1f, 0f));
m_UVs2.Add(new Vector2(0f, 0f));
break;
case TFillMode.ProjectedTexture:
float h = uvs.height / Font.LineHeight;
float w = uvs.width / Font.LineHeight;
m_UVs2.Add(new Vector2(glyph.xOffset, h - glyph.yOffset));
m_UVs2.Add(new Vector2(w - glyph.xOffset, h - glyph.yOffset));
m_UVs2.Add(new Vector2(w - glyph.xOffset, glyph.yOffset));
m_UVs2.Add(new Vector2(glyph.xOffset, glyph.yOffset));
break;
default:
break;
}
m_SubmeshTriangles[_currentMaterial].Add(index);
m_SubmeshTriangles[_currentMaterial].Add(index + 1);
m_SubmeshTriangles[_currentMaterial].Add(index + 2);
m_SubmeshTriangles[_currentMaterial].Add(index);
m_SubmeshTriangles[_currentMaterial].Add(index + 2);
m_SubmeshTriangles[_currentMaterial].Add(index + 3);
}
float BlitString(string str, float cursorX, float cursorY, List <int> vertexPointers = null)
{
TGlyph prevGlyph = null;
Rect r;
bool inControlCode = false;
int requestedMaterial = 0;
foreach (char c in str)
{
int charCode = (int)c;
if (inControlCode)
{
inControlCode = false;
if (charCode >= 48 && charCode <= 57) // 0-9
{
requestedMaterial = charCode - 48;
if (requestedMaterial < _materialCount)
{
_currentMaterial = requestedMaterial;
}
else
{
Debug.LogWarning(string.Format(
"Requested material {0} out of range.", requestedMaterial
));
}
AddPlaceholderGlyphBounds();
continue;
}
}
else
{
if (charCode == 92) // Backslash
{
inControlCode = true;
AddPlaceholderGlyphBounds();
continue;
}
}
TGlyph glyph = Font.Glyphs.Get(charCode);
if (glyph == null)
{
continue;
}
if (charCode == 32)
{
// Assuming here that spaces should not be clickable.
AddPlaceholderGlyphBounds();
cursorX += glyph.xAdvance * Size + Tracking;
continue;
}
float kerning = 0f;
if (prevGlyph != null)
{
kerning = prevGlyph.GetKerning(charCode) * Size;
}
if (vertexPointers != null)
{
vertexPointers.Add(m_Vertices.Count);
}
r = new Rect(
cursorX + glyph.xOffset * Size + kerning,
cursorY + glyph.yOffset * Size,
glyph.rect.width * Size,
glyph.rect.height * Size
);
BlitQuad(r, glyph);
// Click bounds for glyphs are based on allocated space, not rendered space.
// Otherwise we'll end up with unclickable dead zones between glyphs.
r.width = glyph.xAdvance * Size;
// And Y coordinates are just not handled the same at all.
r.y = -cursorY - r.height - glyph.yOffset * Size;
StoreGlyphBounds(r);
cursorX += glyph.xAdvance * Size + Tracking + kerning;
prevGlyph = glyph;
}
if (cursorX > Width)
{
Width = cursorX;
}
return(cursorX);
}
void DoWork()
{
ANT_Library library;
ANT_Face face;
ANT_GlyphSlot slot;
ANT_Error error;
string filename;
string text;
int num_chars;
bool use_kerning;
int previous;
int pen_x, pen_y, n;
filename = Common.Example_AltNETType_FontFileName;
text = "AltNETType (transformation + centering + kerning)";// Common.Pangram;
num_chars = text.Length;
// ... initialize library ...
// ... create face object ...
// ... set character size ...
{
// 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, 28 * 64, 0, 96, 0);
// error handling omitted
}
// a small shortcut
slot = face.glyph;
// start at (0,0)
pen_x = 0;
pen_y = 0;
num_glyphs = 0;
use_kerning = ANT.ANT_HAS_KERNING(face);
previous = 0;
ANT_Vector delta = new ANT_Vector();
for (n = 0; n < num_chars; n++)
{
glyph = glyphs[n];
if (glyph == null)
{
glyphs[n] = glyph = new TGlyph();
}
// convert character code to glyph index
glyph.index = ANT.ANT_Get_Char_Index(face, text[n]);
// retrieve kerning distance and move pen position
if (use_kerning &&
previous != 0 &&
glyph.index != 0)
{
ANT.ANT_Get_Kerning(face, previous, glyph.index, ANT_Kerning_Mode.ANT_KERNING_DEFAULT, delta);
pen_x += delta.x >> 6;
}
// store current pen position
if (glyph.pos == null)
{
glyph.pos = new ANT_Vector();
}
glyph.pos.x = pen_x;
glyph.pos.y = pen_y;
// load glyph image into the slot without rendering
error = ANT.ANT_Load_Glyph(face, glyph.index, ANT_LOAD.ANT_LOAD_DEFAULT);
if (error != ANT_Error.ANT_Err_Ok)
{
// ignore errors, jump to next glyph
continue;
}
// extract glyph image and store it in our table
error = ANT.ANT_Get_Glyph(face.glyph, out glyph.image);
if (error != ANT_Error.ANT_Err_Ok)
{
// ignore errors, jump to next glyph
continue;
}
// translate the glyph image now
ANT.ANT_Glyph_Transform(glyph.image, null, glyph.pos);
// increment pen position
pen_x += slot.advance.x >> 6;
// record current glyph index
previous = glyph.index;
// increment number of glyphs
num_glyphs++;
}
ANT_Vector start = new ANT_Vector();
// transformation matrix
ANT_Matrix matrix = new ANT_Matrix();
ANT_Glyph image;
ANT_Vector pen = new ANT_Vector();
ANT_BBox bbox = new ANT_BBox();
double angle;
ANT_BBox string_bbox;
compute_string_bbox(out string_bbox);
int my_target_width = WIDTH;
int my_target_height = HEIGHT;
// compute string dimensions in integer pixels
int string_width = string_bbox.xMax - string_bbox.xMin;
int string_height = string_bbox.yMax - string_bbox.yMin;
// use -30 degrees
angle = (330.0 / 360) * 3.14159 * 2;
// compute start pen position in 26.6 cartesian pixels
start.x = (int)(((my_target_width - string_width * Math.Cos(angle) - string_height * Math.Sin(angle)) / 2 + string_bbox.yMax * Math.Sin(angle)) * 64);
// start.y = ((my_target_height - string_height) / 2) * 64;
// need to center bitmaps (not base line)
start.y = (int)(((my_target_height - string_height * Math.Cos(angle) - string_width * Math.Sin(angle)) / 2 - string_bbox.yMin * Math.Cos(angle)) * 64);
// set up transform (a rotation here)
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);
pen.CopyFrom(start);
for (n = 0; n < num_glyphs; n++)
{
// create a copy of the original glyph
error = ANT.ANT_Glyph_Copy(glyphs[n].image, out image);
if (error != ANT_Error.ANT_Err_Ok)
{
continue;
}
// transform copy (this will also translate it to the
// correct position
ANT.ANT_Glyph_Transform(image, matrix, pen);
// check bounding box; if the transformed glyph image
// is not in our target surface, we can avoid rendering it
ANT.ANT_Glyph_Get_CBox(image, ANT_Glyph_BBox_Mode.ANT_GLYPH_BBOX_PIXELS, bbox);
if (bbox.xMax <= 0 ||
bbox.xMin >= my_target_width ||
bbox.yMax <= 0 ||
bbox.yMin >= my_target_height)
{
//continue;
}
else
{
// convert glyph image to bitmap (destroy the glyph copy!)
error = ANT.ANT_Glyph_To_Bitmap(ref image, ANT_Render_Mode.ANT_RENDER_MODE_NORMAL,
null, // no additional translation
true); // destroy copy in "image"
if (error == ANT_Error.ANT_Err_Ok)
{
ANT_BitmapGlyph bit = (ANT_BitmapGlyph)image;
draw_bitmap(bit.bitmap, bit.left, my_target_height - bit.top);
}
}
// increment pen position --
// we don't have access to a slot structure,
// so we have to use advances from glyph structure
// (which are in 16.16 fixed float format)
pen.x += image.advance.x >> 10;
pen.y += image.advance.y >> 10;
ANT.ANT_Done_Glyph(ref image);
}
//
show_image();
ANT.ANT_Done_Face(ref face);
ANT.ANT_Done_AltNETType(ref library);
}
float BlitString(string str, float cursorX, float cursorY, List <int> vertexPointers = null)
{
TGlyph prevGlyph = null;
Rect r;
bool inControlCode = false;
int requestedMaterial = 0;
foreach (char c in str)
{
int charCode = (int)c;
if (inControlCode)
{
inControlCode = false;
if (charCode >= 48 && charCode <= 57) // 0-9
{
requestedMaterial = charCode - 48;
if (requestedMaterial < _materialCount)
{
_currentMaterial = requestedMaterial;
}
else
{
Debug.LogWarning(string.Format(
"Requested material {0} out of range.", requestedMaterial
));
}
if (EnableClickSupport)
{
AddPlaceholderGlyphBounds();
}
continue;
}
}
else
{
if (charCode == 92) // Backslash
{
inControlCode = true;
if (EnableClickSupport)
{
AddPlaceholderGlyphBounds();
}
continue;
}
}
TGlyph glyph = Font.Glyphs.Get(charCode);
if (glyph == null)
{
continue;
}
if (charCode == 32)
{
// Assuming here that spaces should not be clickable.
if (EnableClickSupport)
{
AddPlaceholderGlyphBounds();
}
cursorX += glyph.xAdvance * Size + Tracking;
continue;
}
float kerning = 0f;
if (prevGlyph != null)
{
kerning = prevGlyph.GetKerning(charCode) * Size;
}
if (vertexPointers != null)
{
vertexPointers.Add(m_Vertices.Count);
}
r = new Rect(
cursorX + glyph.xOffset * Size + kerning,
cursorY + glyph.yOffset * Size,
glyph.rect.width * Size,
glyph.rect.height * Size
);
BlitQuad(r, glyph);
// Only need to store glyph bounds if click support is enabled.
if (EnableClickSupport)
{
// Click bounds for glyphs are based on allocated space, not rendered space.
// Otherwise we'll end up with unclickable dead zones between glyphs.
r.width = glyph.xAdvance * Size;
// And Y coordinates are just not handled the same at all.
r.y = -cursorY - r.height - glyph.yOffset * Size;
// Calculate relative world-space bounds for this glyph and store them.
Bounds b = new Bounds(
new Vector3(r.x + r.width / 2f, r.y + r.height / 2f, 0f),
new Vector3(r.width, r.height, r.height)
);
if (Stationary)
{
// Bake the rotation and position into the bounds so we
// don't have to recalculate them on the fly later.
b = TranslateBounds(b);
}
StoreGlyphBounds(b);
}
cursorX += glyph.xAdvance * Size + Tracking + kerning;
prevGlyph = glyph;
}
if (cursorX > Width)
{
Width = cursorX;
}
return(cursorX);
}
