public void TestContainsPointNoBufferOverrun2()
{
PointF[] data = new PointF[11];
data[0] = new PointF(250, 208);
data[1] = new PointF(247, 201);
data[2] = new PointF(245, 208);
data[3] = new PointF(245, 213);
data[4] = new PointF(249, 215);
data[5] = new PointF(251, 215);
data[6] = new PointF(254, 215);
data[7] = new PointF(251, 210);
data[8] = new PointF(255, 209);
data[9] = new PointF(254, 201);
var offset = PolygonF.TestVertexNormalization(data);
// test for a possible buffer overrun in the computation
foreach (PointF garbagePoint in SimulatedBufferOverrunPoints)
{
data[data.Length - 1] = garbagePoint;
unsafe
{
fixed(PointF *points = data)
{
// inside PolygonF, the vertexCount is always exactly the expected array length
// which is 10 (the 11th point simulates garbage data beyond the array)
int vertexCount = data.Length - 1;
Assert.IsTrue(PolygonF.TestContains(new PointF(249, 209) - offset, points, vertexCount));
}
}
}
}
public void TestContainsPointNoBufferOverrun()
{
PointF[] data = new PointF[5];
data[0] = new PointF(0, 0);
data[1] = new PointF(1, 0);
data[2] = new PointF(1, 1);
data[3] = new PointF(0, 1);
var offset = PolygonF.TestVertexNormalization(data);
// test for a possible buffer overrun in the computation
foreach (PointF garbagePoint in SimulatedBufferOverrunPoints)
{
data[data.Length - 1] = garbagePoint;
unsafe
{
fixed(PointF *points = data)
{
// inside PolygonF, the vertexCount is always exactly the expected array length
// which is 4 (the 5th point simulates garbage data beyond the array)
int vertexCount = data.Length - 1;
Assert.IsTrue(PolygonF.TestContains(new PointF(0.5f, 0.5f) - offset, points, vertexCount)); // inside
Assert.IsFalse(PolygonF.TestContains(new PointF(0.5f, 1.5f) - offset, points, vertexCount)); // above
Assert.IsFalse(PolygonF.TestContains(new PointF(0f, 1.5f) - offset, points, vertexCount)); // above
Assert.IsTrue(PolygonF.TestContains(new PointF(0f, 0.5f) - offset, points, vertexCount)); // left edge
Assert.IsFalse(PolygonF.TestContains(new PointF(1f, 0.5f) - offset, points, vertexCount)); // right edge
Assert.IsTrue(PolygonF.TestContains(new PointF(0.5f, 0f) - offset, points, vertexCount)); // bottom edge
Assert.IsFalse(PolygonF.TestContains(new PointF(0.5f, 1f) - offset, points, vertexCount)); // top edge
Assert.IsTrue(PolygonF.TestContains(new PointF(0f, 0f) - offset, points, vertexCount)); // bottom left corner
Assert.IsFalse(PolygonF.TestContains(new PointF(0f, 1f) - offset, points, vertexCount)); // top left corner
Assert.IsFalse(PolygonF.TestContains(new PointF(1f, 0f) - offset, points, vertexCount)); // bottom right corner
Assert.IsFalse(PolygonF.TestContains(new PointF(1f, 1f) - offset, points, vertexCount)); // top right corner
}
}
}
}
