54 lines
1.5 KiB
C#
54 lines
1.5 KiB
C#
using Graphing.Forms;
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using System.Drawing;
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namespace Graphing.Parts;
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public record struct GraphRectangle : IGraphPart
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{
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public Float2 min, max;
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public double opacity;
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public GraphRectangle()
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{
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min = new();
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max = new();
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opacity = 1;
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}
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public static GraphRectangle FromSize(Float2 center, Float2 size, double opacity = 1) => new()
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{
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min = new(center.x - size.x / 2,
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center.y - size.y / 2),
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max = new(center.x + size.x / 2,
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center.y + size.y / 2),
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opacity = opacity,
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};
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public static GraphRectangle FromRange(Float2 min, Float2 max, double opacity = 1) => new()
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{
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min = min,
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max = max,
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opacity = opacity,
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};
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public void Render(in GraphForm form, in Graphics g, in Pen pen)
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{
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if (!double.IsFinite(max.x) || !double.IsFinite(max.y) ||
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!double.IsFinite(min.x) || !double.IsFinite(min.y)) return;
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if (min.x > max.x) (min.x, max.x) = (max.x, min.x);
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if (min.y > max.y) (min.y, max.y) = (max.y, min.y);
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Int2 start = form.GraphSpaceToScreenSpace(min),
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end = form.GraphSpaceToScreenSpace(max);
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Int2 size = new(end.x - start.x + 1,
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start.y - end.y);
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if (size.x == 0 || size.y == 0) return;
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Color initialColor = pen.Color;
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pen.Color = Color.FromArgb((int)(opacity * 255), pen.Color);
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g.FillRectangle(pen.Brush, new Rectangle(start.x, end.y, size.x, size.y));
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pen.Color = initialColor;
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}
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}
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