GoaLitiuM/FlaxEngine
1
0
Fork 0
Code Issues Pull Requests Actions 7 Packages Projects Releases Wiki Activity

Merge branch 'visject-improvements-6' of git://github.com/stefnotch/FlaxEngine into stefnotch-visject-improvements-6

Browse Source
This commit is contained in:
Wojtek Figat
2021-02-27 20:44:29 +01:00
parent 8d40ab5883 f3c608f2f3
commit fbecd01435
13 changed files with 447 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

100
Source/Editor/Surface/Elements/OutputBox.cs
View File

@@ -2,6 +2,7 @@
using FlaxEngine;
using FlaxEngine.GUI;
using System;
namespace FlaxEditor.Surface.Elements
{
@@ -12,6 +13,11 @@ namespace FlaxEditor.Surface.Elements
[HideInEditor]
public class OutputBox : Box
{
/// <summary>
/// Distance for the mouse to be considered above the connection
/// </summary>
public float MouseOverConnectionDistance => 100f / Surface.ViewScale;
/// <inheritdoc />
public OutputBox(SurfaceNode parentNode, NodeElementArchetype archetype)
: base(parentNode, archetype, archetype.Position + new Vector2(parentNode.Archetype.Size.X, 0))
@@ -43,23 +49,96 @@ namespace FlaxEditor.Surface.Elements
*/
}
/// <summary>
/// Checks if a point intersects a connection
/// </summary>
/// <param name="targetBox">The other box.</param>
/// <param name="mousePosition">The mouse position</param>
public bool IntersectsConnection(Box targetBox, ref Vector2 mousePosition)
{
var startPos = Parent.PointToParent(Center);
Vector2 endPos = targetBox.Parent.PointToParent(targetBox.Center);
return IntersectsConnection(ref startPos, ref endPos, ref mousePosition, MouseOverConnectionDistance);
}
/// <summary>
/// Checks if a point intersects a bezier curve
/// </summary>
/// <param name="start">The start location.</param>
/// <param name="end">The end location.</param>
/// <param name="point">The point</param>
/// <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)
{
// Pretty much a point in rectangle check
if ((point.X - start.X) * (end.X - point.X) < 0) return false;
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;
float len = d1.Length + d2.Length + d3.Length;
int segmentCount = Math.Min(Math.Max(Mathf.CeilToInt(len * 0.05f), 1), 100);
float segmentCountInv = 1.0f / segmentCount;
Bezier(ref start, ref control1, ref control2, ref end, 0, out Vector2 p);
for (int i = 1; i <= segmentCount; i++)
{
Vector2 oldp = p;
float t = i * segmentCountInv;
Bezier(ref start, ref control1, ref control2, ref end, t, out p);
// Maybe it would be reasonable to return the point?
CollisionsHelper.ClosestPointPointLine(ref point, ref oldp, ref p, out Vector2 result);
if (Vector2.DistanceSquared(point, result) <= squaredDistance)
{
return true;
}
}
return false;
}
private static void Bezier(ref Vector2 p0, ref Vector2 p1, ref Vector2 p2, ref Vector2 p3, float alpha, out Vector2 result)
{
Vector2.Lerp(ref p0, ref p1, alpha, out var p01);
Vector2.Lerp(ref p1, ref p2, alpha, out var p12);
Vector2.Lerp(ref p2, ref p3, alpha, out var p23);
Vector2.Lerp(ref p01, ref p12, alpha, out var p012);
Vector2.Lerp(ref p12, ref p23, alpha, out var p123);
Vector2.Lerp(ref p012, ref p123, alpha, out result);
}
/// <summary>
/// Draw all connections coming from this box.
/// </summary>
public void DrawConnections()
public void DrawConnections(ref Vector2 mousePosition)
{
float mouseOverDistance = MouseOverConnectionDistance;
// Draw all the connections
var center = Size * 0.5f;
var tmp = PointToParent(ref center);
var startPos = Parent.PointToParent(ref tmp);
var startPos = Parent.PointToParent(Center);
var startHighlight = ConnectionsHighlightIntensity;
for (int i = 0; i < Connections.Count; i++)
{
Box targetBox = Connections[i];
tmp = targetBox.PointToParent(ref center);
Vector2 endPos = targetBox.Parent.PointToParent(ref tmp);
Vector2 endPos = targetBox.Parent.PointToParent(targetBox.Center);
var highlight = 1 + Mathf.Max(startHighlight, targetBox.ConnectionsHighlightIntensity);
var color = _currentTypeColor * highlight;
// TODO: Figure out how to only draw the topmost connection
if (IntersectsConnection(ref startPos, ref endPos, ref mousePosition, mouseOverDistance))
{
highlight += 0.5f;
}
DrawConnection(ref startPos, ref endPos, ref color, highlight);
}
}
@@ -70,12 +149,9 @@ namespace FlaxEditor.Surface.Elements
public void DrawSelectedConnection(Box targetBox)
{
// Draw all the connections
var center = Size * 0.5f;
var tmp = PointToParent(ref center);
var startPos = Parent.PointToParent(ref tmp);
tmp = targetBox.PointToParent(ref center);
Vector2 endPos = targetBox.Parent.PointToParent(ref tmp);
DrawConnection(ref startPos, ref endPos, ref _currentTypeColor, 2);
var startPos = Parent.PointToParent(Center);
Vector2 endPos = targetBox.Parent.PointToParent(targetBox.Center);
DrawConnection(ref startPos, ref endPos, ref _currentTypeColor, 2.5f);
}
/// <inheritdoc />