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[ui] Viewer3D: TransformGizmo - clean mouse handling translation

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Julien-Haudegond 2020-07-08 15:42:41 +02:00
parent cd630418e4
commit ad2f287b66
1 changed files with 6 additions and 7 deletions
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13
meshroom/ui/qml/Viewer3D/TransformGizmo.qml
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@ -466,16 +466,15 @@ Entity {
const pickedPosition = objectPicker.screenPoint
const mouseVector = Qt.vector2d(mouseHandler.currentPosition.x - pickedPosition.x, -(mouseHandler.currentPosition.y - pickedPosition.y))
// Transform the positive picked axis vector from World Coord to Normalized Device Coord
const viewMatrix = camera.transform.matrix.inverted()
// Transform the positive picked axis vector from World Coord to Screen Coord
const gizmoLocalPointOnAxis = gizmoDisplayTransform.matrix.times(Qt.vector4d(pickedAxis.x, pickedAxis.y, pickedAxis.z, 1))
const gizmoCenterPoint = gizmoDisplayTransform.matrix.times(Qt.vector4d(0, 0, 0, 1))
const projectedPointOnAxis = camera.projectionMatrix.times(viewMatrix.times(gizmoLocalPointOnAxis))
const projectedCenter = camera.projectionMatrix.times(viewMatrix.times(gizmoCenterPoint))
const projectedAxisVector = Qt.vector2d(projectedPointOnAxis.x/projectedPointOnAxis.w - projectedCenter.x/projectedCenter.w, projectedPointOnAxis.y/projectedPointOnAxis.w - projectedCenter.y/projectedCenter.w)
const screenPoint2D = pointFromWorldToScreen(gizmoLocalPointOnAxis, camera, windowSize)
const screenCenter2D = pointFromWorldToScreen(gizmoCenterPoint, camera, windowSize)
const screenAxisVector = Qt.vector2d(screenPoint2D.x - screenCenter2D.x, -(screenPoint2D.y - screenCenter2D.y))
// Get the cosinus of the angle from the projectedAxisVector to the mouseVector
const cosAngle = projectedAxisVector.dotProduct(mouseVector) / (projectedAxisVector.length() * mouseVector.length())
// Get the cosinus of the angle from the screenAxisVector to the mouseVector
const cosAngle = screenAxisVector.dotProduct(mouseVector) / (screenAxisVector.length() * mouseVector.length())
const offset = cosAngle * mouseVector.length() * sensibility
// If the mouse is not at the same spot as the pickedPoint, we do translation