static
bool F_Hit_Translate_Handle_At_Center( APlaceable* o, const EdSceneViewport& viewport )
{
const Ray3D eyeRay = GetEyeRay(viewport);
const FLOAT dist = eyeRay.Distance( o->GetOrigin() );
const FLOAT pickingDist = F_Get_Translate_Handle_Radius( eyeRay.origin, o->GetOrigin() );
return dist < pickingDist;
}
void CCamera::GetEyeRays(std::vector<Ray>& rays, std::vector<glm::vec2>& samples, uint numRays)
{
rays.clear();
samples.clear();
glm::vec2 range(m_Width, m_Height);
GetStratifiedSamples2D(samples, range, numRays);
for(uint i = 0; i < samples.size(); ++i)
{
rays.push_back(GetEyeRay(samples[i].x, samples[i].y));
}
}
inline
Vec3D F_Get_Translation_Gizmo_Pick_Point_In_World_Space( const EdSceneViewport& viewport
, const Vec2D& xyNDC,
const APlaceable* pEntity
, const EGizmoAxis eAxis
)
{
Ray3D gizmoAxisWS = GetGizmoAxisInWorldSpace( pEntity, eAxis );
Ray3D eyeRay = GetEyeRay( viewport, xyNDC );
Vec3D pointOnGizmo, pointOnEyeRay;
ELineStatus eLineStatus = IntersectLines( gizmoAxisWS, eyeRay, pointOnGizmo, pointOnEyeRay );
//Assert( eLineStatus != Lines_Parallel );
if( eLineStatus != Lines_Parallel )
{
return pointOnGizmo;
}
return gizmoAxisWS.origin
+ gizmoAxisWS.direction * GetTranslateGizmoAxisScale( eyeRay.origin, pEntity->GetOrigin() );
}
static
void F_Draw_Uniform_Scale_Handle( const EdDrawContext& context, const APlaceable* entity, const FColor* forceColor = nil )
{
const EdSceneViewport& viewport = context.viewport;
BatchRenderer & batchRenderer = context.renderer;
//AHitTesting & hitTesting = context.hitTesting;
const Vec3D objPos = entity->GetOrigin();
Ray3D eyeRay = GetEyeRay(viewport);
Plane3D gizmoPlane( (eyeRay.origin - objPos).GetNormalized(), objPos );
FLOAT f;
gizmoPlane.RayIntersection( eyeRay.origin, eyeRay.direction, f );
Vec3D pickPoint = eyeRay.origin + eyeRay.direction * f;
const FColor& color = forceColor ? *forceColor : FColor::YELLOW;
batchRenderer.DrawDashedLine(
objPos, pickPoint, 1.0f, color, color
);
}
void EdGizmo::OnMouseMove( const EdSceneViewport& viewport, const SMouseMoveEvent& args )
{
AHitProxy* pHitProxy = viewport.objAtCursor;
const bool bHighlightObjects = true;
if( bHighlightObjects )
{
if( pHitProxy != nil )
{
APlaceable* pPlaceable = pHitProxy->IsPlaceable();
m_hightlighted = pPlaceable;
HGizmoAxis* pHGizmoAxis = SafeCast<HGizmoAxis>( pHitProxy );
if( pHGizmoAxis != nil )
{
m_highlightedAxes = pHGizmoAxis->axis;
}
else
{
m_highlightedAxes = EGizmoAxis::GizmoAxis_None;
}
}
else
{
m_hightlighted = nil;
}
}
if( viewport.IsDraggingMouse() && m_selected != nil )
{
// gizmo pick point, in screen space
Vec2D pickPosNDC;
PointToNDC( viewport, viewport.dragStartPosition.x(), viewport.dragStartPosition.y(), pickPosNDC );
//DBGOUT("pickPosNDC: %f, %f\n",pickPosNDC.x,pickPosNDC.y);
Vec2D currPosNDC;
PointToNDC( viewport, args.mouseX, args.mouseY, currPosNDC );
//DBGOUT("currPosNDC: %f, %f\n",currPosNDC.x,currPosNDC.y);
// we need to convert screen space delta to world space movement
Vec2D deltaNDC = currPosNDC - pickPosNDC;
//dbgout << "delta=" << deltaNDC << dbgout.NewLine();
switch( m_currentMode )
{
case EGizmoMode::Gizmo_Translate :
if( m_currentAxis == GizmoAxis_None )
{
return;
}
if( m_currentAxis == GizmoAxis_All )
{
L_TranslateAll:
const rxView& eye = viewport.GetView();
Ray3D pickRay = GetEyeRay( viewport, currPosNDC );
FLOAT prevDist = (m_oldState.translation - eye.origin).LengthSqr();
if( prevDist < VECTOR_EPSILON )
{
return;
}
prevDist = mxSqrt(prevDist);
Vec3D newEntityPos = eye.origin + pickRay.direction * prevDist;
m_selected->SetOrigin( newEntityPos );
}
else
{
Vec3D gizmoPickPos = F_Get_Translation_Gizmo_Pick_Point_In_World_Space( viewport, pickPosNDC, m_selected, m_currentAxis );
//Vec3D centerOfGizmo = m_selected->GetOrigin();
Vec3D pointOnGizmo = F_Get_Translation_Gizmo_Pick_Point_In_World_Space( viewport, currPosNDC, m_selected, m_currentAxis );
Vec3D translationDelta = pointOnGizmo - gizmoPickPos;
const FLOAT MAX_TRANSLATION_DIST = 100.0f;
translationDelta.Clamp(Vec3D(-MAX_TRANSLATION_DIST),Vec3D(MAX_TRANSLATION_DIST));
Vec3D newEntityPos = m_oldState.translation + translationDelta;
m_selected->SetOrigin( newEntityPos );
}
break;
case EGizmoMode::Gizmo_Scale :
if( m_currentAxis == GizmoAxis_All )
{
goto L_TranslateAll;
}
else
{
//dbgout << "Scaling\n";
FLOAT mag = deltaNDC.LengthFast();
FLOAT newEntityScale = m_oldState.scaleFactor + mag * signf(deltaNDC.x);
newEntityScale = maxf(newEntityScale,0.01f);
m_selected->SetScale( newEntityScale );
}
break;
case EGizmoMode::Gizmo_Rotate :
//if( m_currentAxis == GizmoAxis_None )
//{
// return false;
//}
if( m_currentAxis == GizmoAxis_All )
{
goto L_TranslateAll;
}
else
{
//dbgout << "Rotating\n";
mxUNDONE;
static FLOAT ROT_ARC_RADIUS = 1.0f;
HOT_FLOAT(ROT_ARC_RADIUS);
// starting point of rotation arc
Vec3D vDownPt = ConvertScreenPointToVector(
viewport,
viewport.dragStartPosition.x(), viewport.dragStartPosition.y(),
ROT_ARC_RADIUS
);
// current point of rotation arc
Vec3D vCurrPt = ConvertScreenPointToVector(
viewport,
args.mouseX, args.mouseY,
ROT_ARC_RADIUS
);
#if 0
Quat qRot = QuatFromBallPoints( vDownPt, vCurrPt );
qRot.Normalize();
#else
Vec3D axis = Cross( vDownPt, vCurrPt );
axis.Normalize();
F4 angle = AngleBetween( vDownPt, vCurrPt );
Quat qRot( axis, angle );
qRot.Normalize();
#endif
Quat q = qRot * m_oldState.orientation;
q.Normalize();
m_selected->SetOrientation(q);
}
break;
mxNO_SWITCH_DEFAULT;
}
}
}
Ray CCamera::GetEyeRay(glm::vec2& pixel)
{
glm::vec2 range(m_Width, m_Height);
pixel = GetUniformSample2D(range);
return GetEyeRay(pixel.x, pixel.y);
}
Ray CCamera::GetEyeRay()
{
glm::vec2 range(m_Width, m_Height);
glm::vec2 s = GetUniformSample2D(range);
return GetEyeRay(s.x, s.y);
}