/**
* Draws a line with an arrow at the end.
*
* @param Start Starting point of the line.
* @param End Ending point of the line.
* @param Color Color of the line.
* @param Mag Size of the arrow.
*/
void FDebugRenderSceneProxy::DrawLineArrow(FPrimitiveDrawInterface* PDI,const FVector &Start,const FVector &End,const FColor &Color,float Mag) const
{
// draw a pretty arrow
FVector Dir = End - Start;
const float DirMag = Dir.Size();
Dir /= DirMag;
FVector YAxis, ZAxis;
Dir.FindBestAxisVectors(YAxis,ZAxis);
FMatrix ArrowTM(Dir,YAxis,ZAxis,Start);
DrawDirectionalArrow(PDI,ArrowTM,Color,DirMag,Mag,SDPG_World);
}
/**
* Draw the scene proxy as a dynamic element
*
* @param PDI - draw interface to render to
* @param View - current view
*/
virtual void DrawDynamicElements(FPrimitiveDrawInterface* PDI,const FSceneView* View)
{
QUICK_SCOPE_CYCLE_COUNTER( STAT_ArrowSceneProxy_DrawDynamicElements );
FMatrix EffectiveLocalToWorld;
#if WITH_EDITOR
if (bLightAttachment)
{
EffectiveLocalToWorld = GetLocalToWorld().GetMatrixWithoutScale();
}
else
#endif //WITH_EDITOR
{
EffectiveLocalToWorld = GetLocalToWorld();
}
DrawDirectionalArrow(PDI,EffectiveLocalToWorld,ArrowColor,ArrowSize * 3.0f * ARROW_SCALE,ARROW_SCALE,GetDepthPriorityGroup(View));
}
void FUnrealEdUtils::DrawWidget(const FSceneView* View,FPrimitiveDrawInterface* PDI, const FMatrix& WidgetMatrix, int32 InInfo1, int32 InInfo2, EAxisList::Type HighlightAxis, EWidgetMovementMode bInMode, bool bHitTesting)
{
const FVector WidgetOrigin = WidgetMatrix.GetOrigin();
// Calculate size to draw widget so it takes up the same screen space.
const float ZoomFactor = FMath::Min<float>(View->ViewMatrices.ProjMatrix.M[0][0], View->ViewMatrices.ProjMatrix.M[1][1]);
const float WidgetRadius = View->Project(WidgetOrigin).W * (UnrealEd_WidgetSize / ZoomFactor);
// Choose its color. Highlight manipulated axis in yellow.
FColor XColor(255, 0, 0);
FColor YColor(0, 255, 0);
FColor ZColor(0, 0, 255);
if(HighlightAxis == EAxisList::X)
XColor = FColor(255, 255, 0);
else if(HighlightAxis == EAxisList::Y)
YColor = FColor(255, 255, 0);
else if(HighlightAxis == EAxisList::Z)
ZColor = FColor(255, 255, 0);
const FVector XAxis = WidgetMatrix.GetScaledAxis( EAxis::X );
const FVector YAxis = WidgetMatrix.GetScaledAxis( EAxis::Y );
const FVector ZAxis = WidgetMatrix.GetScaledAxis( EAxis::Z );
if(bInMode == WMM_Rotate)
{
if(bHitTesting) PDI->SetHitProxy( new HWidgetUtilProxy(InInfo1, InInfo2, EAxisList::X, WidgetMatrix, bInMode) );
DrawCircle(PDI,WidgetOrigin, YAxis, ZAxis, XColor, WidgetRadius, 24, SDPG_Foreground);
if(bHitTesting) PDI->SetHitProxy( NULL );
if(bHitTesting) PDI->SetHitProxy( new HWidgetUtilProxy(InInfo1, InInfo2, EAxisList::Y, WidgetMatrix, bInMode) );
DrawCircle(PDI,WidgetOrigin, XAxis, ZAxis, YColor, WidgetRadius, 24, SDPG_Foreground);
if(bHitTesting) PDI->SetHitProxy( NULL );
if(bHitTesting) PDI->SetHitProxy( new HWidgetUtilProxy(InInfo1, InInfo2, EAxisList::Z, WidgetMatrix, bInMode) );
DrawCircle(PDI,WidgetOrigin, XAxis, YAxis, ZColor, WidgetRadius, 24, SDPG_Foreground);
if(bHitTesting) PDI->SetHitProxy( NULL );
}
else
{
FMatrix WidgetTM;
// Draw the widget arrows.
if(bHitTesting) PDI->SetHitProxy( new HWidgetUtilProxy(InInfo1, InInfo2, EAxisList::X, WidgetMatrix, bInMode) );
WidgetTM = FMatrix(XAxis, YAxis, ZAxis, WidgetOrigin);
DrawDirectionalArrow(PDI,WidgetTM, XColor, WidgetRadius, 1.f, SDPG_Foreground);
if(bHitTesting) PDI->SetHitProxy( NULL );
if(bHitTesting) PDI->SetHitProxy( new HWidgetUtilProxy(InInfo1, InInfo2, EAxisList::Y, WidgetMatrix, bInMode) );
WidgetTM = FMatrix(YAxis, ZAxis, XAxis, WidgetOrigin);
DrawDirectionalArrow(PDI,WidgetTM, YColor, WidgetRadius, 1.f, SDPG_Foreground);
if(bHitTesting) PDI->SetHitProxy( NULL );
if(bHitTesting) PDI->SetHitProxy( new HWidgetUtilProxy(InInfo1, InInfo2, EAxisList::Z, WidgetMatrix, bInMode) );
WidgetTM = FMatrix(ZAxis, XAxis, YAxis, WidgetOrigin);
DrawDirectionalArrow(PDI,WidgetTM, ZColor, WidgetRadius, 1.f, SDPG_Foreground);
if(bHitTesting) PDI->SetHitProxy( NULL );
if(bInMode == WMM_Scale)
{
FVector AlongX = WidgetOrigin + (XAxis * WidgetRadius * 0.3f);
FVector AlongY = WidgetOrigin + (YAxis * WidgetRadius * 0.3f);
FVector AlongZ = WidgetOrigin + (ZAxis * WidgetRadius * 0.3f);
PDI->DrawLine(AlongX, AlongY, FColor(255,255,255), SDPG_Foreground);
PDI->DrawLine(AlongY, AlongZ, FColor(255,255,255), SDPG_Foreground);
PDI->DrawLine(AlongZ, AlongX, FColor(255,255,255), SDPG_Foreground);
}
}
}
