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Hover over connections

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This commit is contained in:
stefnotch
2021-02-25 09:55:17 +01:00
parent 1dbbbeced1
commit bcc036f808
2 changed files with 12 additions and 46 deletions
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56
Source/Editor/Surface/Elements/OutputBox.cs
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@@ -44,11 +44,6 @@ namespace FlaxEditor.Surface.Elements
*/
}
private static bool IsRight(ref Vector2 a, ref Vector2 b, ref Vector2 point)
{
return ((b.X - a.X) * (point.Y - a.Y) - (b.Y - a.Y) * (point.X - a.X)) <= 0;
}
/// <summary>
/// Checks if a point intersects a bezier curve
/// </summary>
@@ -58,35 +53,21 @@ namespace FlaxEditor.Surface.Elements
/// <param name="distance">Distance at which its an intersection</param>
public static bool IntersectsConnection(ref Vector2 start, ref Vector2 end, ref Vector2 point, float distance)
{
// Maybe I should make this a non-static method and automatically read the Surface.ViewScale?
// Pretty much a point in rectangle check
if ((point.X - start.X) * (end.X - point.X) < 0) return false;
var dst = (end - start) * new Vector2(0.25f, 0.05f); // Purposefully tweaked to 0.25
Vector2 control1 = new Vector2(start.X + dst.X, start.Y + dst.Y);
Vector2 control2 = new Vector2(end.X - dst.X, end.Y + dst.Y);
// I'm ignoring the start.Y + dst.Y
Vector2 direction = end - start;
float offset = Mathf.Sign(direction.Y) * distance;
Vector2 pointAbove1 = new Vector2(control1.X, start.Y - offset);
Vector2 pointAbove2 = new Vector2(end.X, end.Y - offset);
Vector2 pointBelow1 = new Vector2(start.X, start.Y + offset);
Vector2 pointBelow2 = new Vector2(control2.X, end.Y + offset);
/* Render2D.DrawLine(pointAbove1, pointAbove2, Color.Red);
Render2D.DrawRectangle(new Rectangle(pointAbove2 - new Vector2(5), new Vector2(10)), Color.Red);
Render2D.DrawLine(pointBelow1, pointBelow2, Color.Green);
Render2D.DrawRectangle(new Rectangle(pointBelow2 - new Vector2(5), new Vector2(10)), Color.Green);
*/
// TODO: are they parallel ^?
return IsRight(ref pointAbove1, ref pointAbove2, ref point) == IsRight(ref pointBelow2, ref pointBelow1, ref point);
float offset = Mathf.Sign(end.Y - start.Y) * distance;
if ((point.Y - (start.Y - offset)) * ((end.Y + offset) - point.Y) < 0) return false;
// Taken from the Render2D.DrawBezier code
float squaredDistance = distance;
var dst = (end - start) * new Vector2(0.5f, 0.05f);
Vector2 control1 = new Vector2(start.X + dst.X, start.Y + dst.Y);
Vector2 control2 = new Vector2(end.X - dst.X, end.Y + dst.Y);
Vector2 d1 = control1 - start;
Vector2 d2 = control2 - control1;
Vector2 d3 = end - control2;
@@ -138,30 +119,15 @@ namespace FlaxEditor.Surface.Elements
var highlight = 1 + Mathf.Max(startHighlight, targetBox.ConnectionsHighlightIntensity);
var color = _currentTypeColor * highlight;
// if (PointInRectangle(ref startPos, ref endPos, ref mousePosition))
if (IntersectsConnection(ref startPos, ref endPos, ref mousePosition, 100f / Surface.ViewScale))
{
for (int ix = 0; ix < 10000; ix++)
{
OutputBox.IntersectsConnection(ref startPos, ref endPos, ref mousePosition, 30f);
}
if (OutputBox.IntersectsConnection(ref startPos, ref endPos, ref mousePosition, 30f))
{
highlight += 2;
}
highlight += 2;
}
DrawConnection(ref startPos, ref endPos, ref color, highlight);
}
}
private bool PointInRectangle(ref Vector2 a, ref Vector2 b, ref Vector2 point)
{
// This has the convenient property that it doesn't matter if a and b are switched
Vector2 signs = (point - a) * (b - point);
return signs.X >= 0 && signs.Y >= 0;
}
/// <summary>
/// Draw a selected connections coming from this box.
/// </summary>