# Modificateurs de F-Curve

Référence

Panneau

Sidebar region ‣ Modifiers ‣ Modifiers

F-Curve modifiers are similar to object modifiers, in that they add non-destructive effects, that can be adjusted at any time, and layered to create more complex effects. Like object modifiers, F-Curve modifiers are evaluated from the top down. In other words, the top modifier is calculated first and consequent modifiers are calculated in order. Modifiers can be moved by dragging the modifier box from the top right.

Modifiers can be muted or hidden by toggling the checkbox in the modifier’s panel header. They can be removed using the delete button in the modifier’s panel header.

## Ajout d’un modificateur

The F-Curve modifier panel is located in the Sidebar region. Select a curve by selecting one of its curve points, or by selecting the channel list. Click on the Add Modifier menu to select a modifier.

## Types de modificateurs

### Modificateur Generator

Generator creates a polynomial function. These are basic mathematical formulas that represent lines, parabolas, and other more complex curves, depending on the values used.

Mode

Méthode utilisée pour représenter l’équation.

Expanded Polynomial

Equation in the form $$y = x^1 + x^2 + ... + x^n$$.

Factorized Polynomial

Équation de la forme $$y = (Ax + B)(Cx + D)$$.

This option causes the modifier to be added to the curve, instead of replacing it by default.

Order

Specify the order of the polynomial, or the highest power of X for this polynomial. (Number of coefficients: 1.)

Change the Coefficient values to reshape the curve.

Voir aussi

Influence

Controls the percentage of affect the modifier has on the F-Curve.

#### Restreindre la plage de trame

Start/End

L’image sur laquelle l’effet du modificateur commence/se termine.

Blend In, Out

The number of frames, relative the start/end values above, the modifier takes to fade in/out.

### Built-in Function Modifier

Ce sont des formules supplémentaires, chacune avec les mêmes options pour contrôler leur forme. Consultez la référence en mathématiques pour plus d’informations détaillées sur chaque fonction :

Type

The built-in function to use.

Sine

Sine.

Cosine
Tangent
Square Root

La racine carrée de la valeur.

Natural Logarithm

The natural log of the value.

Normalized Sine

$$sin(x)/x$$.

This option causes the modifier to be added to the curve, instead of replacing it by default.

Amplitude

Ajuste le dimensionnement en Y.

Phase Multiplier

Ajuste le dimensionnement en X.

Phase Offset

Ajuste le décalage en X.

Value Offset

Ajuste le décalage en Y.

Influence

Controls the percentage of affect the modifier has on the F-Curve.

#### Restreindre la plage de trame

Start/End

L’image sur laquelle l’effet du modificateur commence/se termine.

Blend In, Out

The number of frames, relative the start/end values above, the modifier takes to fade in/out.

### Modificateur Envelope

Allows you to adjust the overall shape of a curve with control points.

Référence

Set the Y value the envelope is centered around.

Min

Lower distance from Reference Value for 1:1 default influence.

Max

Upper distance from Reference Value for 1:1 default influence.

Add a set of control points. They will be created at the current frame.

Point
Frame

Set the frame number for the control point.

Min

Specifies the lower control point’s position.

Max

Specifies the upper control point’s position.

Influence

Controls the percentage of affect the modifier has on the F-Curve.

#### Restreindre la plage de trame

Start/End

L’image sur laquelle l’effet du modificateur commence/se termine.

Blend In, Out

The number of frames, relative the start/end values above, the modifier takes to fade in/out.

### Modificateur Cycles

Cycles allows you add cyclic motion to a curve that has two or more control points. The options can be set for before and after the curve.

Note

Le modificateur Cycles ne peut être que le premier modificateur.

Before/After Mode
No Cycles

Do not repeat curve data before/after.

Repeat Motion

Repeats the curve data, while maintaining their values each cycle.

Repeat with Offset

Repeats the curve data, but offsets the value of the first point to the value of the last point each cycle.

Repeat Mirrored

Each cycle the curve data is flipped across the X axis.

Count

Set the number of times to cycle the data. A value of 0 cycles the data infinitely.

Influence

Controls the percentage of affect the modifier has on the F-Curve.

#### Restreindre la plage de trame

Start/End

L’image sur laquelle l’effet du modificateur commence/se termine.

Blend In, Out

The number of frames, relative the start/end values above, the modifier takes to fade in/out.

#### Courbes Trivialement Cycliques

Lorsque le Cycle Mode pour les deux extrémités est réglé sur Repeat Motion ou Repeat with Offset, et qu’aucune autre option du modificateur n’est modifiée par rapport à ses valeurs par défaut, il définit un cycle infini simple.

Ce cas particulier bénéficie d’un soutien supplémentaire de la part d’autres secteurs de Blender :

• Le placement de la poignée de Bézier Automatic tient compte du cycle et s’ajuste pour obtenir une transition en douceur.

• L’option Cycle-Aware Keying peut être activée pour prendre en compte le cycle lors de l’insertion de nouvelles trames clés.

### Modificateur Noise

Modifies the curve with a noise formula. This is useful for creating subtle or extreme randomness to animated movements, like camera shake.

Blend Type
Replace

Adds a -0.5 to 0.5 range noise function to the curve.

Adds a 0 to 1 range noise function to the curve.

Subtract

Subtracts a 0 to 1 range noise function to the curve.

Multiply

Multiplies a 0 to 1 range noise function to the curve.

Scale

Adjust the overall size of the noise. Values further from 0 give less frequent noise.

Strength

Adjusts the Y scaling of the noise function.

Offset

Décale le bruit dans le temps.

Phase

Ajuste la graine aléatoire du bruit.

Depth

Ajuste le niveau de détail de la fonction bruit.

Influence

Controls the percentage of affect the modifier has on the F-Curve.

#### Restreindre la plage de trame

Start/End

L’image sur laquelle l’effet du modificateur commence/se termine.

Blend In, Out

The number of frames, relative the start/end values above, the modifier takes to fade in/out.

### Modificateur Limits

Limit curve values to specified X and Y ranges.

Minimum X, Y

Cuts a curve off at these frames ranges, and sets their minimum value at those points.

Minimum X, Y

Truncates the curve values to a range.

Influence

Controls the percentage of affect the modifier has on the F-Curve.

#### Restreindre la plage de trame

Start/End

L’image sur laquelle l’effet du modificateur commence/se termine.

Blend In, Out

The number of frames, relative the start/end values above, the modifier takes to fade in/out.

### Modificateur Interpolation en Escalier

Gives the curve a stepped appearance by rounding values down within a certain range of frames.

Step Size

Specify the number of frames to hold each frame.

Offset

Reference number of frames before frames get held. Use to get hold for (1-3) vs (5-7) holding patterns.

Start Frame

Restrict modifier to only act before its « end » frame.

End Frame

Restrict modifier to only act after its « start » frame.

Influence

Controls the percentage of affect the modifier has on the F-Curve.

#### Restreindre la plage de trame

Start/End

L’image sur laquelle l’effet du modificateur commence/se termine.

Blend In, Out

The number of frames, relative the start/end values above, the modifier takes to fade in/out.