public static void DrawString(Color clr, string s, float size, Point p)
{
var lineHeight = 1.0f;
var spacesInTab = 4;
var xOff = 0f;
var yOff = 0f;
foreach (var c in s)
{
var gl = _ttf.Glyfs[(byte)c];
var mesh = GlyfCache.GetGlyfMesh(gl);
//we need to scale things down
var maxWidth = _ttf.Header.Xmax + 0.0000000001f;
var maxHeight = _ttf.Header.Ymax + 0.0000000001f;
if (char.IsWhiteSpace(c))
{
if (c == '\n')
{
yOff += (size - (size * (_ttf.HorizontalHeaderTable.lineGap / maxHeight)) * lineHeight);
xOff = 0;
}
else if (c == '\t')
{
xOff += size * spacesInTab;
}
else
{
xOff += size;
}
continue;
}
var scaleFactorX = 1f / maxWidth;
var scaleFactorY = 1f / maxHeight;
var scaleX = size * scaleFactorX;
var scaleY = size * scaleFactorY;
var trans = new Matrix4f().InitIdentity().InitTranslation(xOff + p.X, yOff + p.Y + (size), 0);
var scale = new Matrix4f().InitIdentity().InitScale(scaleX, -scaleY, 0);
_rectShader.Apply();
_rectShader.SetUniform("mvp", _orthMat * trans * scale);
_rectShader.SetUniform("uColor", clr);
xOff += size * (_ttf.longHorMetrics[0].advanceWidth / maxWidth);
mesh.Draw();
}
}
public static Size MesureString(string s, float size)
{
var lineHeight = 1.0f;
var spacesInTab = 4;
var xOff = 0f;
var yOff = 0f;
foreach (var c in s)
{
var gl = _ttf.Glyfs[(byte)c];
var mesh = GlyfCache.GetGlyfMesh(gl);
//we need to scale things down
var maxWidth = _ttf.Header.Xmax + 0.0000000001f;
var maxHeight = _ttf.Header.Ymax + 0.0000000001f;
if (char.IsWhiteSpace(c))
{
if (c == '\n')
{
yOff += (size - (size * (_ttf.HorizontalHeaderTable.lineGap / maxHeight)) * lineHeight);
xOff = 0;
}
else if (c == '\t')
{
xOff += size * spacesInTab;
}
else
{
xOff += size;
}
continue;
}
xOff += size * (_ttf.longHorMetrics[0].advanceWidth / maxWidth);
}
return(new Size(xOff, yOff));
}
