Color wheel using Color selective correction: panning and zooming

Moderator: jsachs

Post Reply
pierrelabreche
Posts: 414
Joined: January 29th, 2019, 11:47 pm
What is the make/model of your primary camera?: Nikon Z8

Color wheel using Color selective correction: panning and zooming

Post by pierrelabreche »

Would it be possible to implement the same behavior as for images, so that:
  • the mouse wheel zooms in and out the color wheel according to the position of the pointer, such that the pointer's neighborhood stays in view while zooming
  • pressing the Alt key allows to drag the color wheel
  • holding down the Shift key will lock the hue and holding down the Ctrl key will lock the saturation when you are dragging the control point used for origin or destination.
jsachs
Posts: 4203
Joined: January 22nd, 2009, 11:03 pm

Re: Color wheel using Color selective correction: panning and zooming

Post by jsachs »

Shift and Ctrl are already used to add/remove control points.
The mouse wheel already zooms the color wheel.
Jonathan Sachs
Digital Light & Color
pierrelabreche
Posts: 414
Joined: January 29th, 2019, 11:47 pm
What is the make/model of your primary camera?: Nikon Z8

Re: Color wheel using Color selective correction: panning and zooming

Post by pierrelabreche »

jsachs wrote: November 25th, 2022, 7:36 am Shift and Ctrl are already used to add/remove control points.
Indeed. Shift and Ctrl are used to add/remove control points when the mouse is clicked. The suggestion is to detect Shift and Ctrl when a control point is dragged. Clicking on a control point initiates the dragging gesture. When you are dragging a control point, pressing and holding down Shift would lock the hue; pressing and holding down the Ctrl key will lock the saturation.
jsachs wrote: November 25th, 2022, 7:36 am The mouse wheel already zooms the color wheel.
Indeed. However, zooming does not consider an area of interest inside the color wheel, as identified by the pointer. The suggestion is that zooming the color wheel would be similar to zooming of the input and output images, whereby a crosshair indicates the area of interest and zooming keeps the crosshair in view.
jsachs
Posts: 4203
Joined: January 22nd, 2009, 11:03 pm

Re: Color wheel using Color selective correction: panning and zooming

Post by jsachs »

Ctrl-Click near a control point removes it. Assigning a different meaning to clicking on a control point without dragging it followed by holding Ctrl and then dragging does not sound like good design.

Zooming in already recenters on the current control point.
Jonathan Sachs
Digital Light & Color
pierrelabreche
Posts: 414
Joined: January 29th, 2019, 11:47 pm
What is the make/model of your primary camera?: Nikon Z8

Re: Color wheel using Color selective correction: panning and zooming

Post by pierrelabreche »

jsachs wrote: November 26th, 2022, 8:28 pm Ctrl-Click near a control point removes it. Assigning a different meaning to clicking on a control point without dragging it followed by holding Ctrl and then dragging does not sound like good design.
I was trying to make the behavior consistent with the color picker. An alternative is to associate constraints upon creation of a color correction. Constrained corrections could be part of a right-click menu. A hue-only correction could be displayed as an arc of a circle; a saturation-only correction would be displayed as a radial. A correction could be initiated by a right-click, with the menu choices: normal, hue-only and saturation-only.
jsachs wrote: November 26th, 2022, 8:28 pm Zooming in already recenters on the current control point.
Zooming on the pointer seems more practical. For example, zooming on a cluster of control points and then selecting one in particular.
Post Reply