private void canvas_Paint(object sender, PaintEventArgs e)
{
var g = e.Graphics;
// Draw working area bounding box
var leftTop = vp.project(new Point(0, 0));
var rect_size = 32767 * vp.projection_scale;
g.DrawRectangle(new Pen(Color.Black), leftTop.X, leftTop.Y, rect_size, rect_size);
// Draw symbol itself
symbol.paint(ref g, ref vp, polygonOutlineToolStripMenuItem.Checked);
if (_edit_mode == Edit_mode.EDIT_SYMBOL)
{
// Draw symbol pivot point
var origin = vp.project(new Point(symbol.pivot_x, symbol.pivot_y));
g.DrawLine(new Pen(Color.Black, 3), origin.X, origin.Y - 5, origin.X, origin.Y + 5);
g.DrawLine(new Pen(Color.Black, 3), origin.X - 5, origin.Y, origin.X + 5, origin.Y);
g.DrawLine(new Pen(Color.Yellow), origin.X, origin.Y - 5, origin.X, origin.Y + 5);
g.DrawLine(new Pen(Color.Yellow), origin.X - 5, origin.Y, origin.X + 5, origin.Y);
}
// If geometry selected - its points and rotate origin
else
{
if (selected_geometry_idx != -1)
{
if (selected_point_idx != -1)
{
var p = symbol.geometry[selected_geometry_idx].points[selected_point_idx];
p = vp.project(p);
g.DrawRectangle(new Pen(Color.Yellow), p.X - 5, p.Y - 5, 10, 10);
}
// Draw rotate origin
var origin = new Point((int)rot_origin_x.Value, (int)rot_origin_y.Value);
origin = vp.project(origin);
g.DrawLine(new Pen(Color.Black, 3), origin.X, origin.Y - 5, origin.X, origin.Y + 5);
g.DrawLine(new Pen(Color.Black, 3), origin.X - 5, origin.Y, origin.X + 5, origin.Y);
g.DrawLine(new Pen(Color.Yellow), origin.X, origin.Y - 5, origin.X, origin.Y + 5);
g.DrawLine(new Pen(Color.Yellow), origin.X - 5, origin.Y, origin.X + 5, origin.Y);
}
}
}
public void paint(ref System.Drawing.Graphics canvas, ref ViewPort vp, bool polygonOutline = false)
{
int point_r = 5; // Point radius
Point p = new Point();
int n_points = 0;
float line_width_k = (100 / (canvas.DpiX / 25.4f)) * vp.projection_scale; // Line width coefficient. (S52 docs says :"The coordinates are within the range of 0 to 32767 units. Each unit represents 0.01 mm")
foreach (var geom in geometry)
{
int transparency = (4 - geom.transparency) * 64;
transparency = Math.Min(transparency, 255);
transparency = Math.Max(0, transparency);
var color = Color.FromArgb(transparency, Style.S52colors[geom.color]);
Pen pen = new Pen(color, geom.penWidth * line_width_k);
switch (geom.type)
{
case GeometryType.LINE:
if (geom.points.Count() < 2)
{
continue;
}
n_points = geom.points.Count();
var projPnts = new Point[n_points];
for (int i = 0; i < n_points; i++)
{
projPnts[i] = vp.project(geom.points[i]);
}
canvas.DrawLines(pen, projPnts);
break;
case GeometryType.CIRCLE:
var circle = geom as HCircle;
p = vp.project(circle.points[0]);
var radius = circle.radius * vp.projection_scale;
if (circle.filled)
{
canvas.FillEllipse(new SolidBrush(color), p.X - radius, p.Y - radius, radius * 2, radius * 2);
}
else
{
canvas.DrawEllipse(pen, p.X - radius, p.Y - radius, radius * 2, radius * 2);
}
break;
case GeometryType.POINT:
p = vp.project(geom.points[0]);
int size = (int)(geom.penWidth * line_width_k);
canvas.FillRectangle(new SolidBrush(color), p.X - size / 2, p.Y - size / 2, size, size);
break;
case GeometryType.POLYGON:
if (geom.points.Count() < 2)
{
continue;
}
n_points = geom.points.Count();
projPnts = new Point[n_points];
for (int i = 0; i < n_points; i++)
{
projPnts[i] = vp.project(geom.points[i]);
}
canvas.FillPolygon(new SolidBrush(color), projPnts);
if (polygonOutline)
{
canvas.DrawPolygon(pen, projPnts);
}
break;
}
}
foreach (var geom in geometry)
{
if (!geom.selected)
{
continue;
}
switch (geom.type)
{
case GeometryType.LINE:
n_points = geom.points.Count();
var projPnts = new Point[n_points];
for (int i = 0; i < n_points; i++)
{
projPnts[i] = vp.project(geom.points[i]);
}
if (n_points > 1)
{
canvas.DrawLines(new Pen(Color.Red), projPnts);
}
for (int i = 0; i < n_points; i++)
{
canvas.DrawEllipse(new Pen(Color.Red), projPnts[i].X - point_r, projPnts[i].Y - point_r, point_r * 2, point_r * 2);
}
break;
case GeometryType.CIRCLE:
var circle = geom as HCircle;
p = vp.project(circle.points[0]);
var radius = circle.radius * vp.projection_scale;
canvas.DrawEllipse(new Pen(Color.Red), p.X - radius, p.Y - radius, radius * 2, radius * 2);
canvas.DrawEllipse(new Pen(Color.Red), p.X - point_r, p.Y - point_r, point_r * 2, point_r * 2);
break;
case GeometryType.POINT:
p = vp.project(geom.points[0]);
canvas.DrawEllipse(new Pen(Color.Red), p.X - point_r, p.Y - point_r, point_r * 2, point_r * 2);
break;
case GeometryType.POLYGON:
n_points = geom.points.Count();
projPnts = new Point[n_points];
for (int i = 0; i < n_points; i++)
{
projPnts[i] = vp.project(geom.points[i]);
}
if (n_points > 1)
{
canvas.DrawLines(new Pen(Color.Red), projPnts);
}
for (int i = 0; i < n_points; i++)
{
canvas.DrawEllipse(new Pen(Color.Red), projPnts[i].X - point_r, projPnts[i].Y - point_r, point_r * 2, point_r * 2);
}
break;
}
}
}