private void SetAxis(Line2D axis, Vector2D startPoint, Vector2D endPoint)
{
axis.StartPoint = startPoint;
axis.EndPoint = endPoint;
axis.RenderLayer = renderLayer;
axis.Clip(clippingBounds);
}
public void LineAboveViewportIsHidden()
{
var line = new Line2D(new Vector2D(0.2f, -1.0f), new Vector2D(0.6f, -1.5f), Color.Red);
line.Clip(Rectangle.One);
Assert.AreEqual(new Vector2D(0.2f, -1.0f), line.StartPoint);
Assert.AreEqual(new Vector2D(0.6f, -1.5f), line.EndPoint);
Assert.IsFalse(line.IsVisible);
}
public void LineEnteringBottomEdgeIsClipped()
{
var line = new Line2D(new Vector2D(0.4f, 0.5f), new Vector2D(0.3f, 1.5f), Color.Red);
line.Clip(Rectangle.FromCenter(0.5f, 0.5f, 0.5f, 0.5f));
Assert.AreEqual(new Vector2D(0.4f, 0.5f), line.StartPoint);
Assert.AreEqual(new Vector2D(0.375f, 0.75f), line.EndPoint);
Assert.IsTrue(line.IsVisible);
}
public void LineExitingBottomEdgeIsClipped()
{
var line = new Line2D(new Vector2D(0.1f, 1.5f), new Vector2D(0.2f, 0.5f), Color.Red);
line.Clip(Rectangle.One);
Assert.AreEqual(new Vector2D(0.15f, 1.0f), line.StartPoint);
Assert.AreEqual(new Vector2D(0.2f, 0.5f), line.EndPoint);
Assert.IsTrue(line.IsVisible);
}
public void LineCrossingViewportIsClippedAtStartAndEnd()
{
var line = new Line2D(new Vector2D(-1.0f, 0.4f), new Vector2D(2.0f, 0.6f), Color.Red);
line.Clip(Rectangle.FromCenter(0.5f, 0.5f, 0.5f, 0.5f));
Assert.IsTrue(line.StartPoint.IsNearlyEqual(new Vector2D(0.25f, 0.4833f)));
Assert.IsTrue(line.EndPoint.IsNearlyEqual(new Vector2D(0.75f, 0.5167f)));
Assert.IsTrue(line.IsVisible);
}
public void LineExitingLeftEdgeIsClipped()
{
var line = new Line2D(new Vector2D(0.5f, 0.4f), new Vector2D(-0.5f, 0.4f), Color.Red);
line.Clip(Rectangle.FromCenter(0.5f, 0.5f, 0.5f, 0.5f));
Assert.AreEqual(new Vector2D(0.5f, 0.4f), line.StartPoint);
Assert.AreEqual(new Vector2D(0.25f, 0.4f), line.EndPoint);
Assert.IsTrue(line.IsVisible);
}
public void LineNotCrossingViewportIsHidden()
{
var line = new Line2D(new Vector2D(-1.0f, 0.2f), new Vector2D(0.2f, -1.0f), Color.Red);
line.Clip(Rectangle.One);
Assert.AreEqual(new Vector2D(-1.0f, 0.2f), line.StartPoint);
Assert.AreEqual(new Vector2D(0.2f, -1.0f), line.EndPoint);
Assert.IsFalse(line.IsVisible);
}
public void LineRightOfViewportIsHidden()
{
var line = new Line2D(new Vector2D(1.2f, 0.5f), new Vector2D(1.6f, 0.5f), Color.Red);
line.Clip(Rectangle.One);
Assert.AreEqual(new Vector2D(1.2f, 0.5f), line.StartPoint);
Assert.AreEqual(new Vector2D(1.6f, 0.5f), line.EndPoint);
Assert.IsFalse(line.IsVisible);
}
public void LineInsideViewportIsNotClipped()
{
var line = new Line2D(new Vector2D(0.4f, 0.4f), new Vector2D(0.6f, 0.5f), Color.Red);
line.Clip(Rectangle.One);
Assert.AreEqual(new Vector2D(0.4f, 0.4f), line.StartPoint);
Assert.AreEqual(new Vector2D(0.6f, 0.5f), line.EndPoint);
Assert.IsTrue(line.IsVisible);
}
private void UpdateLine(int i)
{
Line2D line = lines[i - 1];
line.StartPoint = ToQuadratic(points[i - 1], viewport, drawArea);
line.EndPoint = ToQuadratic(points[i], viewport, drawArea);
line.RenderLayer = graph.RenderLayer + RenderLayerOffset;
line.Clip(clippingBounds);
if (!graph.IsVisible)
line.IsVisible = false;
}
private void InsertPointAt(Vector2D point, int index)
{
if (index > 0)
MoveLineEndpoint(point, index);
var line = new Line2D(ToQuadratic(point, viewport, drawArea),
ToQuadratic(points[index], viewport, drawArea), Color);
line.Clip(clippingBounds);
lines.Insert(index, line);
points.Insert(index, point);
}
private void AddPointToEnd(Vector2D point)
{
points.Add(point);
if (points.Count <= 1)
return;
var line = new Line2D(ToQuadratic(points[points.Count - 2], viewport, drawArea),
ToQuadratic(point, viewport, drawArea), Color);
line.Clip(clippingBounds);
lines.Add(line);
}
public void LineCrossingViewportIsClippedAtStartAndEnd()
{
var line = new Line2D(new Vector2D(-1.0f, 0.4f), new Vector2D(2.0f, 0.6f), Color.Red);
line.Clip(Rectangle.FromCenter(0.5f, 0.5f, 0.5f, 0.5f));
Assert.IsTrue(line.StartPoint.IsNearlyEqual(new Vector2D(0.25f, 0.4833f)));
Assert.IsTrue(line.EndPoint.IsNearlyEqual(new Vector2D(0.75f, 0.5167f)));
Assert.IsTrue(line.IsVisible);
}
public void LineExitingBottomEdgeIsClipped()
{
var line = new Line2D(new Vector2D(0.1f, 1.5f), new Vector2D(0.2f, 0.5f), Color.Red);
line.Clip(Rectangle.One);
Assert.AreEqual(new Vector2D(0.15f, 1.0f), line.StartPoint);
Assert.AreEqual(new Vector2D(0.2f, 0.5f), line.EndPoint);
Assert.IsTrue(line.IsVisible);
}
public void LineEnteringBottomEdgeIsClipped()
{
var line = new Line2D(new Vector2D(0.4f, 0.5f), new Vector2D(0.3f, 1.5f), Color.Red);
line.Clip(Rectangle.FromCenter(0.5f, 0.5f, 0.5f, 0.5f));
Assert.AreEqual(new Vector2D(0.4f, 0.5f), line.StartPoint);
Assert.AreEqual(new Vector2D(0.375f, 0.75f), line.EndPoint);
Assert.IsTrue(line.IsVisible);
}
public void LineExitingLeftEdgeIsClipped()
{
var line = new Line2D(new Vector2D(0.5f, 0.4f), new Vector2D(-0.5f, 0.4f), Color.Red);
line.Clip(Rectangle.FromCenter(0.5f, 0.5f, 0.5f, 0.5f));
Assert.AreEqual(new Vector2D(0.5f, 0.4f), line.StartPoint);
Assert.AreEqual(new Vector2D(0.25f, 0.4f), line.EndPoint);
Assert.IsTrue(line.IsVisible);
}
public void LineInsideViewportIsNotClipped()
{
var line = new Line2D(new Vector2D(0.4f, 0.4f), new Vector2D(0.6f, 0.5f), Color.Red);
line.Clip(Rectangle.One);
Assert.AreEqual(new Vector2D(0.4f, 0.4f), line.StartPoint);
Assert.AreEqual(new Vector2D(0.6f, 0.5f), line.EndPoint);
Assert.IsTrue(line.IsVisible);
}
private void MoveLineEndpoint(Vector2D point, int index)
{
Line2D line = lines[index - 1];
line.EndPoint = ToQuadratic(point, viewport, drawArea);
line.Clip(clippingBounds);
}