engines(3)

engines 💖 (the Coin engine classes, bestie)

okay so like — this is the engines(3) page from the Coin library functions manual, and it's literally a whole roster of engine classes and I'm obsessed. sit down, grab a strawberry 🍓, we're going through all of them.

---

✨ NAME ✨

engines — Engine Classes 🎀

---

✨ SYNOPSIS ✨

Classes 👑

here's the full lineup, no skips, no cuts, every single one:

• class SoBoolOperation — the SoBoolOperation engine evaluates expressions of boolean logic. yes bestie, actual boolean logic, go off 🔥
• class SoCalculator — general purpose calculator for floats and 3D float vectors. she does math. she does everything. main character energy fr fr 💅
• class SoComposeMatrix — the SoComposeMatrix class is used to compose a matrix from miscellaneous transformations. lowkey assembling a whole matrix out of vibes and pieces ✨
• class SoComposeRotation — the SoComposeRotation class is used to compose rotations from angle and axis.
• class SoComposeRotationFromTo — the SoComposeRotationFromTo class is used to compose rotations based on from and to vectors.
• class SoComposeVec2f — the SoComposeVec2f class is used to compose 2D vectors from two floats.
• class SoComposeVec3f — the SoComposeVec3f class is used to compose 3D vectors from floats.
• class SoComposeVec4f — the SoComposeVec4f class is used to compose 4D vectors from four floats.
• class SoComputeBoundingBox — the SoComputeBoundingBox class is used to calculate a bounding box. she's doing the math so you don't have to 🫶
• class SoConcatenate — the SoConcatenate class is used to concatenate several inputs into one output. gluing things together, iconic
• class SoCounter — the SoCounter class is an integer counter engine. counting. that's it. that's the job. 💀
• class SoDecomposeMatrix — the SoDecomposeMatrix class is used to decompose a matrix into simple transformations.
• class SoDecomposeRotation — the SoDecomposeRotation class is used to decompose a rotation into angle and axis.
• class SoDecomposeVec2f — the SoDecomposeVec2f class is used to decompose 2D vectors into two floats.
• class SoDecomposeVec3f — the SoDecomposeVec3f class is used to decompose 3D vectors into three floats.
• class SoDecomposeVec4f — the SoDecomposeVec4f class is used to decompose 4D vectors into four floats.
• class SoElapsedTime — the SoElapsedTime class is a controllable time source engine. time source, but make it controllable ⏰
• class SoEngine — SoEngine is the base class for Coin engines. the mother of them all, the blueprint, the blueprint blueprint 🌸
• class SoEngineOutput — the SoEngineOutput class is the output slots in SoEngine instances.
• class SoFieldConverter — the SoFieldConverter class is the abstract base class for field converters.
• class SoGate — the SoGate class is used to selectively copy values from input to output. gatekeeping, but literally and on purpose 😌
• class SoHeightMapToNormalMap — engine for computing a normal map from a height map.
• class SoInterpolate — the SoInterpolate class is the base class for all interpolator engines. the parent of every interpolator, so proud 🥹
• class SoInterpolateFloat — the SoInterpolateFloat class is used to interpolate two floating point values.
• class SoInterpolateRotation — the SoInterpolateRotation class is used to interpolate between two rotations.
• class SoInterpolateVec2f — the SoInterpolateVec2f class is used to interpolate between pairs of 2D vectors.
• class SoInterpolateVec3f — the SoInterpolateVec3f class is used to interpolate between pairs of 3D vectors.
• class SoInterpolateVec4f — the SoInterpolateVec4f class is used to interpolate between pairs of 4D vectors.
• class SoNodeEngine — SoNodeEngine is the base class for Coin node engines.
• class SoOnOff — the SoOnOff engine is a simple on/off switch. toggle behavior, no notes 💅
• class SoOneShot — the SoOneShot class is a timer that runs for a configurable time and then stops. one shot, one opportunity, she takes it 🌈
• class SoEngineOutputData — the SoEngineOutputData class is a container for a prototype set of outputs.
• class SoSelectOne — the SoSelectOne class is used to select one value from a set of values. choosing one out of many, we love a decisive queen 👑
• class SoTexture2Convert — abstract base class for texture filtering engines.
• class SoTimeCounter — the SoTimeCounter class is an integer counter engine.
• class SoTransformVec3f — the SoTransformVec3f class transforms 3D vectors by a matrix.
• class SoTriggerAny — the SoTriggerAny class is a fan-in engine for triggers. any of them triggers it, she's not picky 💖
• class SoEngineList — the SoEngineList class is a container for SoEngine objects.
• class SoEngineOutputList — the SoEngineOutputList class is a container for SoEngineOutput objects.

---

✨ Detailed Description ✨

okay so the whole vibe: engines are scene based objects that convert between field values of various types, or perform computations on them. that's the assignment. that's what they do. 🦋

the most versatile engine is the SoCalculator engine — and get this, bestie, you can write your own mathematical expressions into it and get it to do almost anything. the range? unmatched. the flexibility? unmatched. truly the it-girl of this whole page ✨

the other engines are more custom-tailored for specific purposes. each one has her own little niche and honestly? respect. 🙈

ngl this whole page is a directory listing of classes, so if you came here looking for one specific engine, scroll back up to SYNOPSIS and find her name. iykyk 💜

---

✨ Author ✨

generated automatically by Doxygen for Coin from the source code. so like, the machines did this one. no cap 🤖✨

---

and that's the page, bestie!! 🎀 this was Coin Version 3.1.3, the engines(3) page, part of the Library Functions Manual — so when you see that version number and the Coin source floating around, you'll know exactly where this came from. go forth and compose your vectors 💅💖🌟