public static CanvasPosition CanvasFromPlotter(Geometry.Position point, double zoomScale, CanvasPosition origin)
{
return new CanvasPosition
{
X = (point.X * zoomScale) + origin.X,
Y = origin.Y - (point.Y * zoomScale)
};
}
public static Geometry.Position PlotterFromCanvas(CanvasPosition point, double zoomScale, CanvasPosition origin)
{
return new Geometry.Position
{
X = (point.X - origin.X) / zoomScale,
Y = (origin.Y - point.Y) / zoomScale
};
}
public void DrawCircle(CanvasPosition centre, double radius, Color colour)
{
var circle = new Ellipse();
circle.Height = 2 * radius;
circle.Width = 2 * radius;
circle.Stroke = new SolidColorBrush(colour);
circle.Fill = new SolidColorBrush(colour);
Canvas.SetLeft(circle, centre.X - radius);
Canvas.SetTop(circle, centre.Y - radius);
DrawObject(circle);
}
private void DrawText(string text, CanvasPosition p, HorizontalAlignment align, string font, int size)
{
var label = new Label();
label.FontSize = size;
label.FontFamily = new FontFamily(font);
label.Content = text;
label.HorizontalAlignment = align;
Canvas.SetLeft(label, p.X);
Canvas.SetTop(label, p.Y);
DrawObject(label);
}
public void DrawEndAlignedText(string text, CanvasPosition p, string font, int size)
{
DrawText(text, p, HorizontalAlignment.Right, font, size);
}
public void DrawCenteredText(string text, CanvasPosition p, string font, int size)
{
DrawText(text, p, HorizontalAlignment.Center, font, size);
}
public void DrawAlignedCircle(CanvasPosition centre, double radius, Color colour)
{
centre.X = AlignedToPixel(centre.X, 2 * radius);
centre.Y = AlignedToPixel(centre.Y, 2 * radius);
DrawCircle(centre, radius, colour);
}
public void DrawCross(CanvasPosition position, double crossSize, double lineWidth, Color colour)
{
var leftX = position.X - crossSize;
var rightX = position.X + crossSize;
var topY = position.Y - crossSize;
var bottomY = position.Y + crossSize;
DrawLine(
new CanvasPosition { X = leftX, Y = topY },
new CanvasPosition { X = rightX, Y = bottomY },
lineWidth, colour);
DrawLine(
new CanvasPosition { X = leftX, Y = bottomY },
new CanvasPosition { X = rightX, Y = topY },
lineWidth, colour);
}
public void DrawAlignedCircle(CanvasPosition centre, double radius, Color colour)
{
DrawCircle(centre, radius, colour);
}
private Geometry.Position PicturePosFromCanvasPos(CanvasPosition pos)
{
return PointConversions.PlotterFromCanvas(pos, ZoomScale(), _origin.Point);
}
private void FocusPosition(CanvasPosition canvas_pos, Geometry.Position picture_pos)
{
var focus_pos = CanvasPosFromPicturePos(picture_pos);
var dx = canvas_pos.X - focus_pos.X;
var dy = canvas_pos.Y - focus_pos.Y;
_origin.Point = new CanvasPosition
{
X = _origin.Point.X + dx,
Y = _origin.Point.Y + dy
};
}
public void DrawText(string text, CanvasPosition p, string font, int size)
{
_gl.DrawText((int)p.X, (int)(Height() - p.Y), 0, 0, 0, font, size, text);
}
public void DrawCircle(CanvasPosition centre, double radius, Color colour)
{
_gl.Color(colour.R, colour.G, colour.B, colour.A);
_gl.PointSize((float)radius*2);
_gl.Begin(OpenGL.GL_POINTS);
_gl.Vertex(GLPosition(centre));
_gl.End();
}
private float[] GLPosition(CanvasPosition p)
{
return new float[] { GLx(p.X), GLy(p.Y) };
}
public void DrawEndAlignedText(string text, CanvasPosition p, string font, int size)
{
DrawText(text, p, font, size);
}
public void DrawLine(CanvasPosition start, CanvasPosition end, double lineWidth, Color colour)
{
var line = new Line();
line.StrokeThickness = lineWidth;
line.Stroke = new SolidColorBrush(colour);
line.X1 = start.X;
line.Y1 = start.Y;
line.X2 = end.X;
line.Y2 = end.Y;
DrawObject(line);
}
public void DrawLine(CanvasPosition start, CanvasPosition end, double lineWidth, Color colour)
{
_gl.Color(colour.R, colour.G, colour.B, colour.A);
_gl.LineWidth((float)lineWidth);
_gl.Begin(OpenGL.GL_LINES);
_gl.Vertex(GLPosition(start));
_gl.Vertex(GLPosition(end));
_gl.End();
}
