Add DebugDraw::DrawLine with separate start/end colors

Source/Engine/Debug/DebugDraw.cpp

@@ -938,6 +938,26 @@ void DebugDraw::DrawLine(const Vector3& start, const Vector3& end, const Color&
     }
 }
 
+void DebugDraw::DrawLine(const Vector3& start, const Vector3& end, const Color& startColor, const Color& endColor, float duration, bool depthTest)
+{
+    const Float3 startF = start - Context->Origin, endF = end - Context->Origin;
+    auto& debugDrawData = depthTest ? Context->DebugDrawDepthTest : Context->DebugDrawDefault;
+    if (duration > 0)
+    {
+        // TODO: separate start/end colors for persistent lines
+        DebugLine l = { startF, endF, Color32(startColor), duration };
+        debugDrawData.DefaultLines.Add(l);
+    }
+    else
+    {
+        Vertex l = { startF, Color32(startColor) };
+        debugDrawData.OneFrameLines.Add(l);
+        l.Position = endF;
+        l.Color = Color32(endColor);
+        debugDrawData.OneFrameLines.Add(l);
+    }
+}
+
 void DebugDraw::DrawLines(const Span<Float3>& lines, const Matrix& transform, const Color& color, float duration, bool depthTest)
 {
     if (lines.Length() == 0)

Source/Engine/Debug/DebugDraw.h

@@ -79,6 +79,17 @@ API_CLASS(Static) class FLAXENGINE_API DebugDraw
     /// <param name="depthTest">If set to <c>true</c> depth test will be performed, otherwise depth will be ignored.</param>
     API_FUNCTION() static void DrawLine(const Vector3& start, const Vector3& end, const Color& color, float duration = 0.0f, bool depthTest = true);
 
+    /// <summary>
+    /// Draws the line.
+    /// </summary>
+    /// <param name="start">The start point.</param>
+    /// <param name="end">The end point.</param>
+    /// <param name="startColor">The color of the start point.</param>
+    /// <param name="endColor">The color of the end point.</param>
+    /// <param name="duration">The duration (in seconds). Use 0 to draw it only once.</param>
+    /// <param name="depthTest">If set to <c>true</c> depth test will be performed, otherwise depth will be ignored.</param>
+    API_FUNCTION() static void DrawLine(const Vector3& start, const Vector3& end, const Color& startColor, const Color& endColor, float duration = 0.0f, bool depthTest = true);
+
     /// <summary>
     /// Draws the lines. Line positions are located one after another (e.g. l0.start, l0.end, l1.start, l1.end,...).
     /// </summary>