public void Draw(RenderContext renderContext, float opacity, Color color)
{
if (renderContext.gl == null)
{
Vector3d viewPoint = Vector3d.TransformCoordinate(renderContext.ViewPoint, ViewTransform);
double drawHeight = (Height / renderContext.FovAngle) * renderContext.Height / 180;
foreach (Text3d t3d in Items)
{
Vector3d screenSpacePnt = renderContext.WVP.Transform(t3d.center);
if (screenSpacePnt.Z < 0)
{
continue;
}
if (Vector3d.Dot((Vector3d)viewPoint, (Vector3d)t3d.center) < .55)
{
continue;
}
Vector3d screenSpaceTop = renderContext.WVP.Transform(t3d.top);
double rotation = Math.Atan2(screenSpacePnt.X - screenSpaceTop.X, screenSpacePnt.Y - screenSpaceTop.Y);
CanvasContext2D ctx = renderContext.Device;
ctx.Save();
ctx.Translate(screenSpacePnt.X, screenSpacePnt.Y);
ctx.Rotate(-rotation); // todo update with up vector
ctx.Alpha = opacity;
ctx.FillStyle = color.ToString();
ctx.Font = "normal" + " " + (false ? "bold" : "normal") + " " + Math.Round(drawHeight * 1.2).ToString() + "px " + "Arial";
ctx.TextBaseline = TextBaseline.Top;
TextMetrics tm = ctx.MeasureText(t3d.Text);
ctx.FillText(t3d.Text, -tm.Width / 2, -drawHeight / 2);
ctx.Restore();
}
}
else
{
// gl version
if (glyphCache == null || glyphCache.Version > glyphVersion)
{
PrepareBatch();
}
if (glyphCache.Ready == false)
{
return;
}
TextShader.Use(renderContext, vertexBuffer.VertexBuffer, glyphCache.Texture.Texture2d);
renderContext.gl.drawArrays(GL.TRIANGLES, 0, vertexBuffer.Count);
}
}
private void CreateCircleGeometry(RenderContext renderContext)
{
CanvasContext2D ctx = renderContext.Device;
ctx.Save();
ctx.Scale(1, Width / Height);
ctx.Translate(X, Y);
ctx.Rotate(RotationAngle * RC);
ctx.BeginPath();
ctx.Arc(0, 0, Width, 0, Math.PI * 2, false);
ctx.ClosePath();
ctx.LineWidth = 0;
ctx.FillStyle = Color.ToString();
ctx.Alpha = Opacity;
ctx.Fill();
ctx.Restore();
}
private void CreateStarGeometry(RenderContext renderContext)
{
CanvasContext2D ctx = renderContext.Device;
ctx.Save();
ctx.Translate(X, Y);
ctx.Rotate(RotationAngle * RC);
ctx.BeginPath();
double centerX = 0;
double centerY = 0;
double radius = Width / 2;
double radiansPerSegment = ((double)Math.PI * 2) / 5;
bool first = true;
for (int i = 0; i < 5; i++)
{
double rads = i * radiansPerSegment - (Math.PI / 2);
if (first)
{
first = false;
ctx.MoveTo(centerX + Math.Cos(rads) * (Width / 2), centerY + Math.Sin(rads) * (Height / 2));
}
else
{
ctx.LineTo(centerX + Math.Cos(rads) * (Width / 2), centerY + Math.Sin(rads) * (Height / 2));
}
double rads2 = i * radiansPerSegment + (radiansPerSegment / 2) - (Math.PI / 2);
ctx.LineTo(centerX + Math.Cos(rads2) * (Width / 5.3), centerY + Math.Sin(rads2) * (Height / 5.3));
}
ctx.ClosePath();
ctx.LineWidth = 0;
ctx.FillStyle = Color.ToString();
ctx.Alpha = Opacity;
ctx.Fill();
ctx.Restore();
}
private void CreateDonutGeometry(RenderContext renderContext)
{
//todo move to dashed lines in future
CanvasContext2D ctx = renderContext.Device;
ctx.Save();
ctx.Translate(X, Y);
ctx.Scale(1, Height / Width);
ctx.Rotate(RotationAngle * RC);
ctx.BeginPath();
ctx.Arc(0, 0, Width / 2, 0, Math.PI * 2, false);
ctx.ClosePath();
ctx.LineWidth = 9;
ctx.StrokeStyle = Color.ToString();
ctx.Alpha = Opacity;
ctx.Stroke();
ctx.Restore();
}
private void CreateLineGeometry(RenderContext renderContext)
{
//todo this needs to be Dashed rounded lines..
CanvasContext2D ctx = renderContext.Device;
ctx.Save();
double radius = Width / 2;
ctx.Translate(X, Y);
ctx.Rotate(RotationAngle * RC);
ctx.MoveTo(-radius, 0);
ctx.LineTo(radius, 0);
ctx.LineWidth = 9;
ctx.StrokeStyle = Color.ToString();
ctx.Alpha = Opacity;
ctx.Stroke();
ctx.Restore();
}
private void CreateRectGeometry(RenderContext renderContext)
{
CanvasContext2D ctx = renderContext.Device;
ctx.Save();
ctx.Translate(X, Y);
ctx.Rotate(RotationAngle * RC);
ctx.BeginPath();
ctx.MoveTo(-Width / 2, -Height / 2);
ctx.LineTo(Width / 2, -Height / 2);
ctx.LineTo(Width / 2, +Height / 2);
ctx.LineTo(-Width / 2, +Height / 2);
ctx.ClosePath();
ctx.LineWidth = 0;
ctx.FillStyle = Color.ToString();
ctx.Alpha = Opacity;
ctx.Fill();
ctx.Restore();
}
public override void Draw3D(RenderContext renderContext, bool designTime)
{
if (texture == null)
{
InitializeTexture();
}
if (!textureReady)
{
return;
}
CanvasContext2D ctx = renderContext.Device;
ctx.Save();
ctx.Translate(X, Y);
ctx.Rotate(RotationAngle * RC);
ctx.Alpha = Opacity;
ctx.DrawImage(texture, -Width / 2, -Height / 2, Width, Height);
ctx.Restore();
}
//public static TextOverlay(Canvas canvas, TextObject textObject)
//{
// this.canvas = canvas;
// this.TextObject = textObject;
// this.Name = textObject.Text.Split(new char[] { '\r', '\n' })[0];
// X = 0;
// Y = 0;
//}
public override void Draw3D(RenderContext renderContext, bool designTime)
{
//TextBlock textBlock = new TextBlock();
//textBlock.Width = this.Width;
//textBlock.Height = this.Height;
//textBlock.Foreground = new SolidColorBrush(TextObject.ForgroundColor);
//textBlock.Text = TextObject.Text;
//textBlock.FontWeight = TextObject.Bold ? FontWeights.Bold : FontWeights.Normal;
//textBlock.FontSize = TextObject.FontSize * 1.2;
//textBlock.HorizontalAlignment = HorizontalAlignment.Left;
//TranslateTransform tt = new TranslateTransform();
//tt.X = this.X - (Width / 2);
//tt.Y = this.Y - (Height / 2);
//textBlock.RenderTransform = tt;
//canvas.Children.Add(textBlock);
//textBlock.Opacity = this.Opacity;
CanvasContext2D ctx = renderContext.Device;
ctx.Save();
ctx.Translate(X, Y);
ctx.Rotate(RotationAngle * RC);
ctx.Alpha = Opacity;
ctx.FillStyle = TextObject.ForgroundColor.ToString();
ctx.Font = (TextObject.Italic ? "italic" : "normal") + " " + (TextObject.Bold ? "bold" : "normal") + " " + Math.Round(TextObject.FontSize * 1.2).ToString() + "px " + TextObject.FontName;
ctx.TextBaseline = TextBaseline.Top;
String text = TextObject.Text;
if (text.IndexOf("{$") > -1)
{
if (text.IndexOf("{$DATE}") > -1)
{
string date = String.Format("{0:yyyy/MM/dd}", SpaceTimeController.Now);
text = text.Replace("{$DATE}", date);
}
if (text.IndexOf("{$TIME}") > -1)
{
string time = String.Format("{0:HH:mm:ss}", SpaceTimeController.Now);
text = text.Replace("{$TIME}", time);
}
// text = text.Replace("{$DIST}", UiTools.FormatDistance(WWTControl.Singleton.SolarSystemCameraDistance));
text = text.Replace("{$LAT}", Coordinates.FormatDMS(WWTControl.Singleton.RenderContext.ViewCamera.Lat));
text = text.Replace("{$LNG}", Coordinates.FormatDMS(WWTControl.Singleton.RenderContext.ViewCamera.Lat));
text = text.Replace("{$RA}", Coordinates.FormatDMS(WWTControl.Singleton.RenderContext.ViewCamera.RA));
text = text.Replace("{$DEC}", Coordinates.FormatDMS(WWTControl.Singleton.RenderContext.ViewCamera.Dec));
text = text.Replace("{$FOV}", Coordinates.FormatDMS(WWTControl.Singleton.RenderContext.FovAngle));
}
string[] lines = text.Split("\n");
double baseline = -(Height / 2);
double lineSpace = TextObject.FontSize * 1.7;
foreach (string line in lines)
{
List <string> parts = Util.GetWrappedText(ctx, line, Width);
foreach (string part in parts)
{
ctx.FillText(part, -Width / 2, baseline);
baseline += lineSpace;
}
}
ctx.Restore();
}
