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| |
| import QtQuick 2.15 |
| import QtQuick3D 1.15 |
| import QtQuick3D.Helpers 1.15 as Helpers |
| |
| Model { |
| id: arrow |
| source: "qrc:///meshes/gizmoarrow.mesh" |
| pickable: true |
| |
| property Node gizmoRoot |
| property Node gizmoAxisRoot: arrow |
| property int axis: -1 |
| |
| property color color: "white" |
| |
| property var _pointerStartPos |
| property var _targetStartPos |
| property var _target |
| property var _view |
| |
| materials: DefaultMaterial { |
| id: material |
| emissiveColor: color |
| lighting: DefaultMaterial.NoLighting |
| } |
| |
| function startDrag(targetNode, view, pointerPosition) |
| { |
| _target = targetNode |
| _view = view |
| _pointerStartPos = getSceneIntersectPos(pointerPosition) |
| var sp = _target.scenePosition |
| _targetStartPos = Qt.vector3d(sp.x, sp.y, sp.z) |
| } |
| |
| function continueDrag(pointerPosition) |
| { |
| var scenePointerPos = getSceneIntersectPos(pointerPosition) |
| var sceneRelativeDistance = Qt.vector3d( |
| scenePointerPos.x - _pointerStartPos.x, |
| scenePointerPos.y - _pointerStartPos.y, |
| scenePointerPos.z - _pointerStartPos.z) |
| |
| var newScenePos = Qt.vector3d( |
| _targetStartPos.x + sceneRelativeDistance.x, |
| _targetStartPos.y + sceneRelativeDistance.y, |
| _targetStartPos.z + sceneRelativeDistance.z) |
| |
| var posInParent = _target.parent.mapPositionFromScene(newScenePos) |
| _target.position = posInParent |
| } |
| |
| function getSceneIntersectPos(pointerPosition) |
| { |
| var scenePos = plane.getIntersectPosFromView(_view, pointerPosition) |
| if (scenePos.x === 0 && scenePos.y === 0 && scenePos.z === 0) { |
| // The viewport is perpendicular to the plane. Tilt the plane and try again |
| plane.rotate(45, Qt.vector3d(1, 0, 0), Node.LocalSpace) |
| scenePos = plane.getIntersectPosFromView(_view, pointerPosition) |
| } |
| |
| // Get the local distance along the x axis from the origin to to the |
| // pointer position. This is the only value we care about, since |
| // you can only drag the arrow along it's local x axis. |
| var localPos = plane.mapPositionFromScene(scenePos) |
| var maskedLocalPos = Qt.vector3d(localPos.x, 0, 0) |
| |
| return plane.mapPositionToScene(maskedLocalPos) |
| } |
| |
| Node { |
| eulerRotation: Qt.vector3d(0, 90, 0) |
| Helpers.PointerPlane { |
| id: plane |
| } |
| } |
| } |
| |