UltimateZoneBuilder/Source/Plugins/BuilderModes/General/HintLabel.cs
2020-05-21 14:20:02 +02:00

53 lines
1.8 KiB
C#
Executable file

using System;
using System.Drawing;
using CodeImp.DoomBuilder.Geometry;
using CodeImp.DoomBuilder.Rendering;
namespace CodeImp.DoomBuilder.BuilderModes
{
public class HintLabel : LineLengthLabel
{
public HintLabel() : base(false, false) { }
public HintLabel(PixelColor textcolor) : base(false, false)
{
label.Color = textcolor;
}
// We don't want any changes here
protected override void UpdateText() { }
public override void Move(Vector2D start, Vector2D end)
{
// Store before making any adjustments to start/end...
this.start = start;
this.end = end;
// Check if start/end point is on screen...
Vector2D lt = General.Map.Renderer2D.DisplayToMap(new Vector2D(0.0f, General.Interface.Display.Size.Height));
Vector2D rb = General.Map.Renderer2D.DisplayToMap(new Vector2D(General.Interface.Display.Size.Width, 0.0f));
RectangleF viewport = new RectangleF((float)lt.x, (float)lt.y, (float)(rb.x - lt.x), (float)(rb.y - lt.y));
bool startvisible = viewport.Contains((float)start.x, (float)start.y);
bool endvisible = viewport.Contains((float)end.x, (float)end.y);
// Get visile area
if(!startvisible || !endvisible)
{
double minx = Math.Min(start.x, end.x);
double maxx = Math.Max(start.x, end.x);
double miny = Math.Min(start.y, end.y);
double maxy = Math.Max(start.y, end.y);
RectangleF labelarea = new RectangleF((float)minx, (float)miny, (float)(maxx - minx), (float)(maxy - miny));
labelarea.Intersect(viewport);
if(!labelarea.IsEmpty)
{
label.Location = new Vector2D(labelarea.X + labelarea.Width * 0.5f, labelarea.Y + labelarea.Height * 0.5f);
return;
}
}
Vector2D delta = end - start;
label.Location = new Vector2D(start.x + delta.x * 0.5f, start.y + delta.y * 0.5f);
}
}
}