points — Blog — Blue Bubble Bursting Pins

Calculating the Force Vector in a Force Field to Influence Destruction SIM in Houdini

Using two existing points that are used as vectors to derive a new force vector. Repeat this for every single point on a sphere geometry to create a force field that can be used to influence simulations.

Houdini, Computer GraphicsbubblepinsDecember 12, 2019houdini, sidefx, math vector, vector math, vector subtraction, points, point attribute, force vector, direction, vector directionComment

Coordinate Positions are Vectors

Points can be formed into vectors. By knowing one point position and the origin position, using two points, a vector can be formed. This comes super handy in Houdini once we realize this. Vector manipulation can be used to influence simulations.

Computer Graphics, HoudinibubblepinsDecember 11, 2019houdini, sidefx, 3d coordinates, 2d coordinates, vector direction, points, vector manipulation, vector addition, vector subtraction, points are vectors Comment

Coloring Points vs Primitives in Houdini

So what happens if a color is assigned to the points instead of the primitives? What is the difference between assigning color to points versus assigning color to primitives? Sometimes we experience color bleeding onto other primitives of the geometry, this article explains why.

Computer Graphics, HoudinibubblepinsOctober 18, 2019houdini, sidefx, points, primitives, coloring points vs primitives, points vs primitives, primnum, point number, color pointsComment

Volume, Core Concepts in Houdini

Core concepts for Volumes. How exactly is volumes made up of voxels? How can you picture it? If you’re new to volumes, this is a great refresher.

Computer Graphics, HoudinibubblepinsAugust 23, 2019houdini, sidefx, voxels, volume, volume primtive, polygon, points, data, volumeVOP, SDF, signed distance field, distance VDB, Fog VDB, band voxels, volume resolution, vdb Comments

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