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feat: add part classification (large/medium/small) to MultiPlateNester

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Introduces PartClass enum and Classify() static method that categorizes
parts as Large (exceeds half work area in either dimension), Medium
(area > 1/9 work area), or Small.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
AJ Isaacs
2026-04-06 13:52:27 -04:00
parent 89a4e6b981
commit 35e89600d0
2 changed files with 66 additions and 0 deletions
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41
OpenNest.Tests/Engine/MultiPlateNesterTests.cs
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@@ -62,4 +62,45 @@ public class MultiPlateNesterTests
Assert.Equal("short-wide", sorted[1].Drawing.Name);
Assert.Equal("square", sorted[2].Drawing.Name);
}
// --- Task 4: Part Classification ---
[Fact]
public void Classify_LargePart_WhenWidthExceedsHalfWorkArea()
{
var workArea = new Box(0, 0, 96, 48);
var bb = new Box(0, 0, 50, 20); // width 50 > half of 96 = 48
var result = MultiPlateNester.Classify(bb, workArea);
Assert.Equal(PartClass.Large, result);
}
[Fact]
public void Classify_LargePart_WhenLengthExceedsHalfWorkArea()
{
var workArea = new Box(0, 0, 96, 48);
var bb = new Box(0, 0, 20, 30); // length 30 > half of 48 = 24
var result = MultiPlateNester.Classify(bb, workArea);
Assert.Equal(PartClass.Large, result);
}
[Fact]
public void Classify_MediumPart_NotLargeButAreaAboveThreshold()
{
var workArea = new Box(0, 0, 96, 48);
// workArea = 4608, 1/9 = 512. bb = 40*15 = 600 > 512
// 40 < 48 (half of 96), 15 < 24 (half of 48) — not Large
var bb = new Box(0, 0, 40, 15);
var result = MultiPlateNester.Classify(bb, workArea);
Assert.Equal(PartClass.Medium, result);
}
[Fact]
public void Classify_SmallPart()
{
var workArea = new Box(0, 0, 96, 48);
// workArea = 4608, 1/9 = 512. bb = 10*10 = 100 < 512
var bb = new Box(0, 0, 10, 10);
var result = MultiPlateNester.Classify(bb, workArea);
Assert.Equal(PartClass.Small, result);
}
}