35 lines
961 B
C#
35 lines
961 B
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 GraphUiCircle : IGraphPart
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{
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public Float2 center;
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public int radius;
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public GraphUiCircle()
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{
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center = new();
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radius = 1;
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}
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public GraphUiCircle(Float2 center, int radius = 8)
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{
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this.center = center;
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this.radius = radius;
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}
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public readonly void Render(in GraphForm form, in Graphics g, in Pen pen)
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{
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if (!double.IsFinite(center.x) || !double.IsFinite(center.y) ||
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!double.IsFinite(radius) || radius == 0) return;
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int rad = (int)(form.ScalingFactor * radius);
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Int2 centerPix = form.GraphSpaceToScreenSpace(center);
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g.FillEllipse(pen.Brush, new Rectangle(new Point(centerPix.x - rad,
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centerPix.y - rad),
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new Size(rad * 2, rad * 2)));
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}
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}
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