defensetree.blogg.se - Blender 3d animation curve

Blender 3d animation curve Patch#
Blender 3d animation curve full#
Blender 3d animation curve code#

And getting a patch approved is historically easier without external code.

Blender 3d animation curve code#

It’s small (only ~250kb), but a lot of the code inside is redundant.

An external library needs to be approved.

Attributes like radius get lost unless we massively modify the library.

Intersections cannot be calculated at lower resolutions, then scaled back up again for rendering.

Result Curve is always a poly line, which makes the geometry node modifier “apply” operation less useful to users.

Inherently works well with all current and future curve types, since they are all turned into Poly Lines.

There are both pros and cons to using a library like Erik used.

I don’t know if you could call this curve → mesh → curve, but it’s definitely curve → evaluated curve points → curve, if that makes sense.Īfter thinking about this for a while, here’s how I’m going to proceed forwards : If the user reduces the resolution of one of their curves, but the algorithm used an infinitely high resolution, intersection points would no longer lie on the visible curve. The boolean operation should conform as closely as possible to the existing shape.Even just a bezier x line intersection can have up to 3 intersections, and it just gets more complicated with each and every additional curve type we have to consider. Intersecting 2 curves can have a lot of points of intersections.The node uses the curve’s evaluated points for 2 reasons :

(But I DO plan to implement proper intersection in as few steps as feasable (It’ll still be O(n^2), because when you think about it, worst case all lines really intersect with all others, meaning O((n - 1)^2) intersection points get created, but in the average case the algorithm should be roughly proportional to the amount of intersection points, not the amount of segments, which I will attempt to get to.) ). Currently brute force is used to calculate the intersection points, and even so, performance so far has been a non issue. A good implementation should therefore be way faster. That is significantly simpler in 1D/curves than it is in 2D/hulls.

Blender 3d animation curve full#

Do that until you reach the end of the curve or completed a full loop. The idea is super simple : Go along one of the curve and copy all control points, until you hit an intersection, where you switch to the other curve. I’ll post a link to my repository when all edge cases have been implemented. In the Motion Trail 3D tab of the 3D view Sidebar I pressed the Motion Trail button and entered the start and end frames to generate a motion trail for the animated cube.The node is not quite ready yet. Then I switched the Timeline in the bottom view to the Graph Editor, to see the cube's animation F-Curves. To test it I created a simple Location animation by moving the default cube to different positions and setting keyframes at frame 0, 20 and 40.

Once installed, the easiest way to access its controls is to activate Blender's Sidebar (press the 'N' key to toggle that on or off). Developer Wayde Moss has created an add-on to visualize and adjust F-Curve animation paths directly in the 3D viewport.Īvailable via Blender Market and Gumroad, MotionTrail3D is easily installed via the usual Preferences ➔ Add-ons route. Translating animation F-Curves from Blender's Graph Editor to the actual animation in the viewport can be an abstract thought process, sometimes requiring trial and error, particularly in the case of multiple F-Curves.