FoundryInk Academy Academy / Animation course
Animation course

Quad warp meshes

Sometimes you do not want to move a piece, you want to bend it: squash a bouncing ball, skew a passing sign, tilt a screen into perspective. The Warp tool does exactly that by giving you a four-corner cage you drag on the stage. This tutorial covers every move the cage makes, where it is the perfect tool, and, honestly, where you should reach for bones instead.

Read time about 13 min

1What a quad warp is

A quad warp wraps your piece in a four-corner cage, one handle at each corner. Drag a corner and the artwork inside stretches to follow, the way a printed image stretches when you pull one corner of the paper. Because there are four corners, you can do a lot of shaping with very little effort: squash, stretch, lean, and tilt, all from the same four handles.

A poster row on the stage, bent by moving the corners of its warp cage; the dashed box is its original shape.
A poster row on the stage, bent by moving the corners of its warp cage; the dashed box is its original shape.See the full screen
Quad means four. The whole tool is those four corners and the flexible surface stretched between them. Master the corners and you have mastered the tool.
Pro note
Four corners, endless mischief. Grab a handle, pull, and watch the whole piece squish along. This one is genuinely fun.

2Find the Warp tool

Select the layer you want to bend, then look in the Tool Options bar along the top of the stage. Among the Layer tools, Select, Translate, Scale, Rotate, you will find Warp. Click it and the four-corner cage appears around your selected piece. It works on a layer as a whole, so it is a shaping tool for the entire row, not for individual points.

Warp in the Layer group of the toolbox, down the left of the stage.
Warp in the Layer group of the toolbox, down the left of the stage.See the full screen
Warp lives right next to Scale and Rotate because it is the same family: a transform on the whole layer. If you want to move points instead, that is the Points tool, not this.
Pro note
Warp sits with Translate, Scale, and Rotate in the Tool Options bar. It is a whole-layer move, not a point-pushing one.

3Drag the four corners

With Warp active, the on-screen hint says it plainly: Drag the four corners on the stage. Grab any corner handle and pull it, and the cage reshapes while the artwork inside deforms to match. Move one corner for a subtle tug, or move several for a bigger transformation. Everything you do with this tool comes down to where you put those four handles.

With Warp active, the Tool Options bar reads Drag the four corners on the stage.
With Warp active, the Tool Options bar reads Drag the four corners on the stage.See the full screen
Work one corner at a time when you are learning. Small, deliberate pulls are far easier to read than yanking all four at once.
Pro note
The whole instruction is right there on the stage: drag the four corners. Rare to get a tool this honest about itself.

4Squash and stretch

The classic use is squash and stretch, the springy give that sells weight and impact. Pull the two top corners down toward the bottom ones to squash a piece flat, or pull them apart to stretch it tall and thin. Do it over a few frames with Auto-key on and a falling object flattens as it lands, then springs back. That little exaggeration is what makes motion feel alive.

The poster squashed by pulling its top corners down toward the bottom ones.
The poster squashed by pulling its top corners down toward the bottom ones.See the full screen
Keep the overall area roughly constant: as you squash wider, let it get shorter, and the opposite for a stretch. That volume trick is what stops it looking like a melting blob.
Pro note
Squash on impact, stretch on the fall. It is the oldest trick in animation and the Warp cage makes it a two-second job.

5Skew and lean

Slide the top two corners sideways while the bottom two stay put and the whole piece skews, leaning like italics. A gentle skew adds a sense of speed to something moving fast, or a bit of wind-lean to a standing figure. Because you are only nudging two corners in the same direction, it is one of the easiest and most useful shapes the cage makes.

The poster skewed by sliding its top two corners sideways.
The poster skewed by sliding its top two corners sideways.See the full screen
A little lean reads as motion; a lot reads as falling over. Skew is a spice, so keep the dose small unless you really mean it.
Pro note
Lean the top corners and your piece picks up a sense of speed. Just do not lean so far it looks ready to topple.

6Fake perspective

Here is where the cage earns its keep. Pull the two far corners closer together than the two near corners and the piece narrows into the distance, a trapezoid that reads as perspective. A flat rectangle becomes a road running away from you, a wall seen at an angle, or a banner catching the light. It is not true three-dimensional depth, but for a flat piece it is a convincing cheat.

The poster's far corners pulled closer together, so it narrows like perspective.
The poster's far corners pulled closer together, so it narrows like perspective.See the full screen
Narrow the edge that should be further away. Our eyes read the smaller end as more distant, and the flat piece suddenly has a plane and a horizon.
Pro note
Pinch the far corners in and flatland gains depth. It is a cheat, and the audience never spots it.

7Key a warp over time

A warp is animatable, just like Translate or Scale. Turn on Auto-key in the Tool Options bar, move the playhead, and drag the corners; each change keys at the playhead. Set a resting shape on one frame and a squashed shape a few frames later, and the studio tweens the bend smoothly between them. That is how a static warp becomes a squash on landing or a screen wobbling as it powers on.

A warp keyed at Frame 7 / 30, with Auto-key ticked in the Tween panel.
A warp keyed at Frame 7 / 30, with Auto-key ticked in the Tween panel.See the full screen
As with any keyed move, the timing between your two shapes is the performance. A fast squash reads as a hard impact; a slow one reads as soft and heavy.
Pro note
Auto-key on, drag, step, drag again. Two warp shapes and the studio fills the bend in between. That is your squash animated.

8Reset warp

Pushed the corners into a mess? There is a clean escape. Click Reset warp and the cage snaps back to a plain rectangle, returning the piece to its undeformed shape. It is the fastest way to start a warp over without undoing step by step, and a good habit whenever an experiment has wandered somewhere ugly.

Reset warp clears the deformation on the current warp, so use it to bail out of a bad shape. If it is keyed, remember you are resetting the shape at the playhead.
Pro note
Made a monster? Reset warp and the cage flattens back to a tidy rectangle. No shame, just start the pull again.

9Where it shines: signs and posters

Flat rectangular things are the Warp tool's natural prey. A shop sign, a poster on a wall, a billboard the camera drifts past, all of them are rectangles that need to sit at an angle in the world. Warp the corners to match the surface they are stuck to and they stop looking pasted on and start looking part of the scene. This is the single most common good use of the tool.

Match the warp to the surface behind it. A poster on a slanted wall should share the wall's slant, or the eye instantly clocks that it is floating.
Pro note
Anything flat and rectangular is Warp's happy place. Signs, posters, billboards. Tilt them into the wall and they belong.

10Screens and monitors

Screens are the same job with a bit more life. Warp a piece of artwork to fit a phone held at an angle, a television across the room, or a computer monitor on a desk. Because you can key the warp, you can even animate content changing on the screen while the screen itself sits locked in its perspective. It is the tidy way to put a moving image inside your scene.

Rig the screen surface as one warped piece, then swap or animate the content inside it separately. The frame stays put while the picture plays.
Pro note
Fit a picture to an angled screen and it reads as a real device. Then let the content change while the frame holds still.

11Bouncing bodies

Beyond flat objects, a whole-piece warp is a quick way to add life to a bouncing character or prop when you do not need bone-level control. Squash a mascot on the down-beat and stretch it on the rise, all from the four corners, and a plain up-and-down bob gains snap and bounce. For a simple hop or a comic reaction, this is faster than rigging a skeleton.

Reach for a warp bounce when the piece can move as one blob. The moment different limbs need to bend independently, that is bone territory, covered next.
Pro note
For a simple boing, warp the whole piece and skip the skeleton. Squash down, stretch up, and it hops with real bounce.

12The limit: no free-form mesh

Now the straight talk. The Warp tool is a four-corner cage and nothing more. A larger free-form deform mesh, the kind with a grid of many points you push around to bend a piece organically, is not present in the studio. So you cannot bend a limb into a smooth S-curve with warp alone; four corners simply cannot make that shape. Knowing this saves you fighting the tool for something it was never built to do.

Four corners give you flat transforms: squash, stretch, skew, perspective. They do not give you smooth organic curves. That is the real edge of the tool.
Pro note
No big grid mesh here, just the four corners. Great for flat bends, not for curling a tail into a spiral. Fair warning.

13The workaround: warp plus bones

When you need real organic bending, combine the two tools instead of forcing one. Rig the piece with bones so limbs, tails, and bodies can curl and follow through, then use Warp on top for the flat squash-and-stretch and perspective touches bones do not cover. Bones handle the smooth curves; the four-corner cage handles the overall give. Together they reach further than either does alone.

Rig this image, on the Row tab of the Poster image row.
Rig this image, on the Row tab of the Poster image row.See the full screen
A good split: bones for anything that curves like a limb, warp for anything that squashes like a whole body or leans like a sign. Use each for what it is best at.
Pro note
Want a curling tail and a squashing bounce? Bones for the curl, warp for the squash. Two tools, one very lively character.

14What good warp work looks like

Good warp work is invisible. A sign that simply belongs on its wall, a screen that reads as a real device, a bounce with just enough squash to feel springy but not rubbery. It usually means small, purposeful corner pulls, roughly kept volume on a squash, and a warp keyed with timing that matches the beat. When in doubt, pull less; the cage is powerful, and a light touch reads far better than a mangled one.

If a viewer notices the warp, it is probably too much. The best deformation sells the motion or the angle without ever calling attention to itself.
Pro note
The best warp is the one nobody spots. Small pulls, kept volume, good timing. Subtle wins every time.

Bend a piece with the cage

Squash, skew, fake perspective, reset. Links into the app. Saved on this device.

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Warp questions

In the Tool Options bar at the top of the stage, among the Layer tools next to Select, Translate, Scale, and Rotate. Select a layer first, then click Warp and the four-corner cage appears around it.

Four, one at each corner. The on-stage hint says it directly: drag the four corners on the stage. Every warp you make, squash, skew, or perspective, comes from where you place those four handles.

Pull the two corners that should sit further away closer together than the two near corners, forming a trapezoid. The narrow end reads as distant, so a flat rectangle gains a plane and depth. It is a cheat, but a convincing one for flat pieces.

Yes. Turn on Auto-key, set one warp shape, move the playhead, and set another; each keys at the playhead and the studio tweens the bend between them. That is how you get a squash on landing or a screen that wobbles awake.

Click Reset warp and the cage snaps back to a plain rectangle, returning the piece to its undeformed shape. It is faster than stepping back through undo, and a clean way to restart an experiment that went wrong.

No. The Warp tool is a four-corner cage only; a larger free-form or grid-based deform mesh with many points is not present in the studio. Four corners handle flat transforms, not smooth organic curves.

Combine tools. Rig the piece with bones for smooth curves like limbs and tails, then use Warp on top for the flat squash, stretch, and perspective that bones do not cover. Bones for the curve, the cage for the give.

Flat rectangular things: signs, posters, billboards, and screens tilted into perspective, plus whole-piece squash and stretch on a simple bounce. Anything that moves as one shape is a great candidate; anything that needs limbs to bend independently is bone work.

Four corners, a lot of life

You can now squash, stretch, skew, and fake perspective with the four-corner cage, key a warp over time, reset it in a click, and pair it with bones where you need real organic bending. It is a small tool with a big reach when you use it for the right job. Next, we sharpen your line quality.