AdamCodd/unreal-engine-5-raw · Datasets at Hugging Face

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Holding Shift and dragging a keyframe will cause it to lock on either the horizontal or vertical axes as it moves, depending on the initial direction of your cursor.

Clicking a curve segment will select all keyframes for that curve. With these selected, you can move entire curves by dragging a keyframe or by using MMB to move the curve relative to your cursor.

Keyframes can be added along a curve by clicking MMB when your cursor is hovered over a curve segment.

You can also create keyframes without disturbing the curve structure by holding Ctrl and clicking MMB on any curve segment.

Keyframes can be cut (Ctrl + X), copied (Ctrl + C), and pasted (Ctrl + V) on the same curve and across different curves. There are also certain rules and contexts that determine the paste behavior.

When copying and pasting keys, they will paste at their original value and relative to the Playhead. Pasting multiple keys will cause the starting (left-most) keyframe to be placed at the playhead, and all other keys relative to that point.

Depending on which curve you have selected and filtered in the Outliner, the paste operation will occur on all curves within the current view.

If multiple curves are within the current view and you want to paste on only one of them, you can click the curve segment, which will select all keyframes for that curve, and press Ctrl + V.

When selecting your keyframes, they will display their tangent information. Tangents are lines that control the incoming and outgoing direction of the curve as it reaches the keyframe. You can select either side of the tangent handle and edit them to control the curve trajectory from that keyframe.

Depending on your Tangent Visibility settings in the Curve Options menu, your tangents may be displayed differently. Ensure this is set to Selected Keys for the default behavior.

To edit a Tangent, first select a keyframe, then select the tangent handle and drag it around in the graph. Similar to moving keyframes, you can also use the MMB to move the tangent relative to your cursor position.

Multiple tangents can be adjusted at the same time by multi-selecting them and using MMB to edit them.

If multiple keyframes are selected, clicking a single tangent will select all tangent handles of the same side.

Holding the Shift key while moving your tangents will snap them to the nearest 45 degree increment.

Various tangent modes are located in the toolbar, and can be used to change the tangent angle of the selected keyframe. Reference the Toolbar section in this document to view their behaviors.

With a keyframe selected, clicking the Weighted Tangents toolbar button will enable weighted tangent angles. This causes tangents to have user-defined lengths which determines the influence that tangent angle exerts over its neighboring keyframe tangents.

Once Weighted Tangents is enabled, you can stretch the tangent to increase its influence on the curve, or shrink it to decrease its influence.

Curves can be temporarily saved and stored (known as buffering), which is useful when making experimental changes to your curves as these curves can be reverted to their stored state. While a curve is buffered, it will display an after-image on the graph for your reference.

To store a curve, right-click a part of the curve segment and select Buffer Curves.

After a curve is stored, you can make any edits you want to the curve. Keyframes and tangents can be added, edited, or removed. To revert your curve back to the original stored version, right-click the curve segment and select Apply 1 Buffered Curves. Buffered curve data is locked to the curve it is stored on, so you cannot buffer for one curve and then apply that buffered data to a different curve.

You can also Swap your curves, which restores the curve but also stores the changes you just made. To do this, right-click the curve and select Swap Buffered Curves onto Selected Curves.

Stored curves are lost whenever you close the Sequencer window.

Curves also contain rules for how they should behave in the timeframes before and after their keyframe segments. This is known as Pre and Post Infinity, and can be useful in order to extend the animation on a curve without needing to create additional keyframes. Pre-Infinity affects the curve region before the first keyframe, and Post-Infinity affects the curve region after the last keyframe.

You can access the Pre and Post Infinity settings for your curves by clicking the Pre or Post Infinity buttons in the Toolbar, or by right-clicking a curve segment and selecting Pre-Infinity and Post-Infinity. Both methods require you have a keyframe selected from the curve you want to adjust .

You can choose from the following infinity types:

This is the default value for all new curves, and will cause the curve to retain its value leading up to the first key, and after the final key.

The curve will repeat, using the absolute values of the keyframes for each loop segment.

Similar to Cycle, the curve will repeat, however each loop segment's value will be set relative to the previous, causing the curve to compound for each loop.

The curve will project the first and last keyframe's tangent angle outward.

Similar to Cycle, the curve will repeat, however each loop segment will mirror the previous, going backward and forward for each loop.

For looping-based infinity modes, such as Cycle and Oscillate, the loop length is defined by the number of keyframes used. Therefore, it will adjust as you add or adjust the length of your keyframe segments.

If you want to alter the displayed color of a curve, which can be useful when you want to visually differentiate property curves, you can use the following commands from the Curve Options toolbar menu:

Set Random Curve Colors, which applies a random color to all visible curves.

Set Curve Color For Selected, which opens a Color Picker where you can apply a specific color to a curve. Select a color and click OK to apply the color to the curve.

Custom curve colors are saved on the specific property or channel curve, enabling them to be re-used throughout your project. To view or change curve color data, open Editor Preferences by clicking Edit > Preferences in the main Unreal Engine menu. Navigate to the Content Editors > Curve Editor section and locate the Custom Colors property array. Here you can add, edit, or remove custom color data. Deleting entries will restore the default color for that curve.

When editing curves, Selection Mode is the default behavior for interacting with keyframes. There are also a variety of other tools you can enable to assist in scaling, transforming, and warping your keyframes.

The Transform Tool enables a lattice interface when you select your keyframes. You can use the various controls on this lattice to adjust your keyframes' times and values.

To activate the Transform Tool, click the Transform Tool button in the toolbar, then select multiple keyframes.

Various points on the lattice can be manipulated, which scales the entire selection relative to the center point. You can drag the Corners, Edges, and Central areas to adjust the curve.

The pivot point of the transform can also be dragged and changed. It will snap to the edges, corners, and center of the lattice, when moving close to those points.

When the Transform Tool is active, you can also use the Tool Options properties to set explicit values for the lattice. These properties affect specific areas of the lattice and display in absolute Seconds.

These properties control the locations of the upper and lower bounds of the lattice.

These properties control the locations of the left and right bounds of the lattice.

These properties control the location of the scale pivot point.

The Retime Tool enables a one-dimensional lattice tool, with which you can specify arbitrary anchor points along the time graph in order to retime your keyframes relative to those points.

To enable the Retime Tool, click the Retime Tool button in the toolbar. This will cause two vertical green lines to appear, which are Retime Anchors.

Drag either of the Retime Anchors to retime your keys. When you select one, it will show its influence between its adjacent anchors, which is a linear falloff.

Double-click in the graph to add new anchor points, and click the Delete (X) button below the anchor lines to remove anchors.

The Multi Select Tool enables a pivot-based scaling tool, with which you can scale your curve along either the value or time axes relative to a set pivot point.

To enable the Multi Select Tool, click the Multi Select Tool button in the toolbar, then select multiple keyframes.

Holding Shift and dragging a keyframe will cause it to lock on either the horizontal or vertical axes as it moves, depending on the initial direction of your cursor.

Clicking a curve segment will select all keyframes for that curve. With these selected, you can move entire curves by dragging a keyframe or by using MMB to move the curve relative to your cursor.

Keyframes can be added along a curve by clicking MMB when your cursor is hovered over a curve segment.

You can also create keyframes without disturbing the curve structure by holding Ctrl and clicking MMB on any curve segment.

Keyframes can be cut (Ctrl + X), copied (Ctrl + C), and pasted (Ctrl + V) on the same curve and across different curves. There are also certain rules and contexts that determine the paste behavior.

When copying and pasting keys, they will paste at their original value and relative to the Playhead. Pasting multiple keys will cause the starting (left-most) keyframe to be placed at the playhead, and all other keys relative to that point.

Depending on which curve you have selected and filtered in the Outliner, the paste operation will occur on all curves within the current view.

If multiple curves are within the current view and you want to paste on only one of them, you can click the curve segment, which will select all keyframes for that curve, and press Ctrl + V.

When selecting your keyframes, they will display their tangent information. Tangents are lines that control the incoming and outgoing direction of the curve as it reaches the keyframe. You can select either side of the tangent handle and edit them to control the curve trajectory from that keyframe.

Depending on your Tangent Visibility settings in the Curve Options menu, your tangents may be displayed differently. Ensure this is set to Selected Keys for the default behavior.

To edit a Tangent, first select a keyframe, then select the tangent handle and drag it around in the graph. Similar to moving keyframes, you can also use the MMB to move the tangent relative to your cursor position.

Multiple tangents can be adjusted at the same time by multi-selecting them and using MMB to edit them.

If multiple keyframes are selected, clicking a single tangent will select all tangent handles of the same side.

Holding the Shift key while moving your tangents will snap them to the nearest 45 degree increment.

Various tangent modes are located in the toolbar, and can be used to change the tangent angle of the selected keyframe. Reference the Toolbar section in this document to view their behaviors.

With a keyframe selected, clicking the Weighted Tangents toolbar button will enable weighted tangent angles. This causes tangents to have user-defined lengths which determines the influence that tangent angle exerts over its neighboring keyframe tangents.

Once Weighted Tangents is enabled, you can stretch the tangent to increase its influence on the curve, or shrink it to decrease its influence.

Curves can be temporarily saved and stored (known as buffering), which is useful when making experimental changes to your curves as these curves can be reverted to their stored state. While a curve is buffered, it will display an after-image on the graph for your reference.

To store a curve, right-click a part of the curve segment and select Buffer Curves.

After a curve is stored, you can make any edits you want to the curve. Keyframes and tangents can be added, edited, or removed. To revert your curve back to the original stored version, right-click the curve segment and select Apply 1 Buffered Curves. Buffered curve data is locked to the curve it is stored on, so you cannot buffer for one curve and then apply that buffered data to a different curve.

You can also Swap your curves, which restores the curve but also stores the changes you just made. To do this, right-click the curve and select Swap Buffered Curves onto Selected Curves.

Stored curves are lost whenever you close the Sequencer window.

Curves also contain rules for how they should behave in the timeframes before and after their keyframe segments. This is known as Pre and Post Infinity, and can be useful in order to extend the animation on a curve without needing to create additional keyframes. Pre-Infinity affects the curve region before the first keyframe, and Post-Infinity affects the curve region after the last keyframe.

You can access the Pre and Post Infinity settings for your curves by clicking the Pre or Post Infinity buttons in the Toolbar, or by right-clicking a curve segment and selecting Pre-Infinity and Post-Infinity. Both methods require you have a keyframe selected from the curve you want to adjust .

You can choose from the following infinity types:

This is the default value for all new curves, and will cause the curve to retain its value leading up to the first key, and after the final key.

The curve will repeat, using the absolute values of the keyframes for each loop segment.

Similar to Cycle, the curve will repeat, however each loop segment's value will be set relative to the previous, causing the curve to compound for each loop.

The curve will project the first and last keyframe's tangent angle outward.

Similar to Cycle, the curve will repeat, however each loop segment will mirror the previous, going backward and forward for each loop.

For looping-based infinity modes, such as Cycle and Oscillate, the loop length is defined by the number of keyframes used. Therefore, it will adjust as you add or adjust the length of your keyframe segments.

If you want to alter the displayed color of a curve, which can be useful when you want to visually differentiate property curves, you can use the following commands from the Curve Options toolbar menu:

Set Random Curve Colors, which applies a random color to all visible curves.

Set Curve Color For Selected, which opens a Color Picker where you can apply a specific color to a curve. Select a color and click OK to apply the color to the curve.

Custom curve colors are saved on the specific property or channel curve, enabling them to be re-used throughout your project. To view or change curve color data, open Editor Preferences by clicking Edit > Preferences in the main Unreal Engine menu. Navigate to the Content Editors > Curve Editor section and locate the Custom Colors property array. Here you can add, edit, or remove custom color data. Deleting entries will restore the default color for that curve.

When editing curves, Selection Mode is the default behavior for interacting with keyframes. There are also a variety of other tools you can enable to assist in scaling, transforming, and warping your keyframes.

The Transform Tool enables a lattice interface when you select your keyframes. You can use the various controls on this lattice to adjust your keyframes' times and values.

To activate the Transform Tool, click the Transform Tool button in the toolbar, then select multiple keyframes.

Various points on the lattice can be manipulated, which scales the entire selection relative to the center point. You can drag the Corners, Edges, and Central areas to adjust the curve.

The pivot point of the transform can also be dragged and changed. It will snap to the edges, corners, and center of the lattice, when moving close to those points.

When the Transform Tool is active, you can also use the Tool Options properties to set explicit values for the lattice. These properties affect specific areas of the lattice and display in absolute Seconds.

These properties control the locations of the upper and lower bounds of the lattice.

These properties control the locations of the left and right bounds of the lattice.

These properties control the location of the scale pivot point.

The Retime Tool enables a one-dimensional lattice tool, with which you can specify arbitrary anchor points along the time graph in order to retime your keyframes relative to those points.

To enable the Retime Tool, click the Retime Tool button in the toolbar. This will cause two vertical green lines to appear, which are Retime Anchors.

Drag either of the Retime Anchors to retime your keys. When you select one, it will show its influence between its adjacent anchors, which is a linear falloff.

Double-click in the graph to add new anchor points, and click the Delete (X) button below the anchor lines to remove anchors.

The Multi Select Tool enables a pivot-based scaling tool, with which you can scale your curve along either the value or time axes relative to a set pivot point.

To enable the Multi Select Tool, click the Multi Select Tool button in the toolbar, then select multiple keyframes.