private void TestRun()
{
outputPictureBox?.Image?.Dispose();
var img = new Bitmap(1024, 600, PixelFormat.Format24bppRgb);
using (var g = Graphics.FromImage(img)){
g.FillRectangle(Brushes.White, 0, 400, 1024, 600);
}
var daveFnt = new TrueTypeFont("dave.ttf"); // a font that uses only straight edges (easy to render)
var notoFnt = new TrueTypeFont("NotoSans-Regular.ttf"); // standard professional font
var bendyFnt = new TrueTypeFont("bendy.ttf"); // a font with extreme curves for testing segmentation
var guthenFnt = new TrueTypeFont("guthen_bloots.ttf"); // a curvy font
_infoWindow = new FontInfoWindow();
_infoWindow.SetFont(daveFnt);
_infoWindow.Show();
_glyphWindow = new GlyphView();
_glyphWindow.SetFont(notoFnt);
_glyphWindow.Show();
var msg_1 = "Hello, world! i0($} ▚ ¾ ∜ -_¬~";
var msg_2 = "Got to be funky. CQUPOJ8";
var msg_3 = "0123456789\nBut, in a larger sense, we can not dedicate - we can not consecrate—we can not hallow—this ground. The brave men,\n" +
"living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. The world will\n" +
"little note, nor long remember what we say here, but it can never forget what they did here.";
var msg_4 = "ABCDE";
var memBefore = GC.GetTotalMemory(false);
var sw = new Stopwatch();
sw.Start();
var prox = new FormsBitmap(img);
float left = 25;
float baseline = 140f;
float scale = 48f / daveFnt.Height();
float letterSpace = 5;
// Draw first message with angular font
for (int i = 0; i < msg_1.Length; i++)
{
var glyph = daveFnt.ReadGlyph(msg_1[i]);
Renderers.DrawGlyph(prox, left, baseline, scale, glyph, false);
left += (float)glyph.xMax * scale;
left += letterSpace;
}
// Draw second message with curvy font
left = 25;
baseline = 200f;
scale = 0.05f;
for (int i = 0; i < msg_2.Length; i++)
{
var glyph = guthenFnt.ReadGlyph(msg_2[i]);
Renderers.DrawGlyph(prox, left, baseline, scale, glyph, false);
left += (float)glyph.xMax * scale;
left += letterSpace;
}
// Draw second message with very curvy font
left = 25;
baseline = 280f;
scale = 0.05f;
for (int i = 0; i < msg_4.Length; i++)
{
var glyph = bendyFnt.ReadGlyph(msg_4[i]);
Renderers.DrawGlyph(prox, left, baseline, scale, glyph, false);
left += (float)glyph.xMax * scale;
left += letterSpace;
}
// Draw a much longer message in the angular font
left = 5;
baseline = 50f;
scale = 16f / daveFnt.Height();
letterSpace = 1.6f;
for (int i = 0; i < msg_3.Length; i++)
{
if (msg_3[i] == '\n')
{
left = 5; baseline += 16; continue;
}
var glyph = daveFnt.ReadGlyph(msg_3[i]);
Renderers.DrawGlyph(prox, left, baseline, scale, glyph, false);
left += (float)glyph.xMax * scale;
left += letterSpace;
}
// Show a sample of the sub-pixel AA strategy
left = 5;
baseline = 300f;
scale = 16f / daveFnt.Height(); // about 11pt
letterSpace = 2;
for (int i = 0; i < 58; i++)
{
var glyph = daveFnt.ReadGlyph((char)('A' + i));
Renderers.RenderSubPixel_RGB_Super3(prox, left, baseline + 20, scale, glyph, false);
left += (float)glyph.xMax * scale;
left += letterSpace;
}
left = 5;
baseline = 320f;
scale = 12f / notoFnt.Height();
for (int i = 0; i < 58; i++)
{
var glyph = notoFnt.ReadGlyph((char)('A' + i));
Renderers.RenderSubPixel_RGB_Super3(prox, left, baseline + 20, scale, glyph, false);
left += (float)glyph.xMax * scale;
left += letterSpace;
}
left = 5;
baseline = 340f;
scale = 10f / notoFnt.Height();
for (int i = 0; i < 58; i++)
{
var glyph = notoFnt.ReadGlyph((char)('A' + i));
Renderers.RenderSubPixel_RGB_Super3(prox, left, baseline + 20, scale, glyph, false);
left += (float)glyph.xMax * scale;
left += letterSpace;
}
left = 5;
baseline = 350f;
scale = 10f / daveFnt.Height(); // very small.
letterSpace = 1.5f;
for (int i = 0; i < 58; i++)
{
var glyph = daveFnt.ReadGlyph((char)('A' + i));
Renderers.RenderSubPixel_RGB_Super3(prox, left, baseline + 30, scale, glyph, false);
left += (float)glyph.xMax * scale;
left += letterSpace;
}
// Demonstrate black-on-white
left = 5;
baseline = 400f;
scale = 16f / daveFnt.Height(); // about 11pt
letterSpace = 2.1f;
for (int i = 0; i < 58; i++)
{
var glyph = daveFnt.ReadGlyph((char)('A' + i));
Renderers.RenderSubPixel_RGB_Super3(prox, left, baseline + 20, scale, glyph, true);
Renderers.RenderSubPixel_RGB_Super3(prox, left, baseline + 35, scale * 0.6f, glyph, true);
left += (float)glyph.xMax * scale;
left += letterSpace;
}
// Varying size
left = 5;
baseline = 480f;
scale = 4f / notoFnt.Height();
letterSpace = 0.8f;
var ampGlyph = notoFnt.ReadGlyph('&');//daveFnt.ReadGlyph('Η');
for (int i = 0; i < 50; i++)
{
scale += 0.001f;
Renderers.DrawGlyph(prox, left, baseline, scale, ampGlyph, true);
left += (float)ampGlyph.xMax * scale;
left += letterSpace;
}
// Large black-on-white
left = 25;
baseline = 540f;
scale = 70f / notoFnt.Height();
letterSpace = 5;
for (int i = 0; i < msg_1.Length; i++)
{
var glyph = notoFnt.ReadGlyph(msg_1[i]);
Renderers.DrawGlyph(prox, left, baseline, scale, glyph, true);
left += (float)glyph.xMax * scale;
left += letterSpace;
}
// Huge curve
scale = 370f / notoFnt.Height();
for (int i = 0; i < 1; i++)
{
var glyph = notoFnt.ReadGlyph('&'); // Show quality of curve-to-line interpolation
Renderers.DrawGlyph(prox, 600, 350, scale, glyph, false);
}
sw.Stop();
Text = "Glyph find & render took: " + sw.Elapsed;
// Prove that the render cache works:
scale = 10f / notoFnt.Height();
var nullProx = new NullProxy();
sw.Reset();
sw.Start();
for (int i = 0; i < 200_000; i++)
{
var glyph = notoFnt.ReadGlyph((char)('a' + (i % 52)));
Renderers.RenderSubPixel_RGB_Super3(nullProx, 0, 0, scale, glyph, false);
}
sw.Stop();
Text += "; Render stress test: " + sw.Elapsed;
var memAfter = GC.GetTotalMemory(false);
Text += "; Memory use: " + ((memAfter - memBefore) / 1048576) + "MB";
outputPictureBox.Image = img;
Width = img.Width + 18;
Height = img.Height + 41;
}