const reinforcementInit = ({ jscad, swcadJs }) => {
const { rectangle } = jscad.primitives
const { union } = jscad.booleans
const { rotate, align, mirror } = jscad.transforms
const { TAU } = jscad.maths.constants
const { position } = swcadJs.utils
const { profiles } = swcadJs
const offsetShape = (offWidth, fThickness) => {
if (offWidth == 0) {
return null
}
return union(
align(
{ modes: ['min', 'max', 'center'] },
rectangle({ size: [offWidth, fThickness] }),
),
align(
{ modes: ['min', 'min', 'center'] },
profiles.shapes.triangle.right30({ base: offWidth }),
),
)
}
const adjOffsetShape = (offShape, idx, thickness, baseLeft, baseRight, baseFront) => {
if (offShape == null) {
return null
}
// default idx == 0 (inset)
let adjOffShape = align({
modes: ['max', 'min', 'center'],
relativeTo: [baseLeft, baseFront, 0],
}, offShape)
if (idx == 1) {
// offset
adjOffShape = align(
{
modes: ['min', 'min', 'center'],
relativeTo: [baseRight, baseFront, 0]
},
mirror({
normal: [1, 0, 0],
origin: [thickness / 2, 0, 0]
}, offShape)
)
}
return adjOffShape;
}
//-----------------
// REINFORCEMENT
//-----------------
/**
* ...
* @memberof profiles.reinforcement
* @param {object} opts
* @returns ...
*/
const straightBeam = ({ length, thickness, flangeThickness, insetWidth = 0, offsetWidth = 0, doubleFlanged = false }) => {
const baseShape = rectangle({ size: [thickness, length] })
const baseShapeCoords = position.getGeomCoords(baseShape)
const offsetWidths = [insetWidth, offsetWidth]
const fThickness = flangeThickness || thickness
const offsetShapes = offsetWidths.map(offWidth => {
return offsetShape(offWidth, fThickness)
})
const adjOffsetShapes = offsetShapes.map((offShape, idx) => {
return adjOffsetShape(
offShape,
idx,
thickness,
baseShapeCoords.left,
baseShapeCoords.right,
baseShapeCoords.front,
);
})
let finalShape = baseShape
adjOffsetShapes.forEach((oShape, idx) => {
if (oShape) {
finalShape = union(finalShape, oShape)
}
})
const mirrored = mirror({ normal: [0, 1, 0] }, finalShape)
if (doubleFlanged) {
return union(finalShape, mirrored)
}
return mirrored
}
/**
* ...
* @memberof profiles.reinforcement
* @param {object} opts
* @returns ...
*/
const cBeam = ({ length, depth, thickness, flangeThickness, insetWidth, offsetWidth }) => {
const beam1 = align({ modes: ['center', 'min', 'center'] }, rotate(
[0, 0, TAU / -4],
straightBeam({ length, thickness, flangeThickness })
))
const beam2 = align(
{ modes: ['center', 'min', 'center'], relativeTo: [(length + thickness) / -2, 0, 0] },
straightBeam({ length: depth, thickness, flangeThickness, insetWidth, offsetWidth })
)
const beam3 = align(
{ modes: ['center', 'min', 'center'], relativeTo: [(length + thickness) / 2, 0, 0] },
straightBeam({ length: depth, thickness, flangeThickness, insetWidth, offsetWidth })
)
return union(beam1, beam2, beam3)
}
/**
* ...
* @memberof profiles.reinforcement
* @param {object} opts
* @returns ...
*/
const polyBeam = ({ radius, segments, thickness, insetWidth, offsetWidth }) => {
const beams = []
const beam = align(
{ modes: ['min', 'min', 'center'], relativeTo: [-insetWidth - (thickness / 2), 0, 0] },
straightBeam({ length: radius / 2, thickness, insetWidth, offsetWidth })
)
for (let idx = 0; idx < segments; idx++) {
const angle = idx / segments * TAU
const rotatedBeam = rotate([0, 0, angle], beam)
beams.push(rotatedBeam)
}
return union(...beams)
}
/**
* Reinforcement profiles
* @memberof profiles
* @namespace reinforcement
*/
const reinforcement = {
offsetShape,
adjOffsetShape,
straight: straightBeam,
/**
* ...
* @memberof profiles.reinforcement
* @param {object} opts
* @returns ...
*/
corner: ({ length, depth, thickness, flangeThickness, insetWidth = 0, offsetWidth = 0 }) => {
const beam1 = align(
{ modes: ['min', 'center', 'center'], relativeTo: [insetWidth, 0, (thickness + offsetWidth) / 2] },
rotate([0, 0, TAU / -4], straightBeam({ length, thickness, flangeThickness, insetWidth, offsetWidth }))
)
const beam2 = align({ modes: ['min', 'min', 'center'], relativeTo: [-insetWidth + thickness, 0, 0] },
straightBeam({ length: depth, thickness, flangeThickness, insetWidth, offsetWidth })
)
return union(beam1, beam2)
},
cBeam,
uBeam: cBeam,
/**
* ...
* @memberof profiles.reinforcement
* @param {object} opts
* @returns ...
*/
tBeam: ({ length, depth, thickness, flangeThickness, insetWidth, offsetWidth }) => {
const beam1 = align({ modes: ['center', 'min', 'center'] }, rotate(
[0, 0, TAU / -4],
straightBeam({ length, thickness, flangeThickness, insetWidth, doubleFlanged: true })
))
const beam2 = align(
{ modes: ['center', 'min', 'center'] },
straightBeam({ length: depth, thickness, flangeThickness, insetWidth, offsetWidth })
)
return union(beam1, beam2)
},
/**
* ...
* @memberof profiles.reinforcement
* @param {object} opts
* @returns ...
*/
doubleTBeam: ({ length, depth, thickness, flangeThickness, insetWidth, offsetWidth }) => {
const beamPoints = [length / 3 - (length / 2), length * 2 / 3 - (length / 2)]
const beam1 = align({ modes: ['center', 'min', 'center'] }, rotate(
[0, 0, TAU / -4],
straightBeam({ length, thickness, flangeThickness, insetWidth, doubleFlanged: true })
))
const beam2 = align(
{ modes: ['center', 'min', 'center'], relativeTo: [beamPoints[0], 0, 0] },
straightBeam({ length: depth, thickness, flangeThickness, insetWidth, offsetWidth })
)
const beam3 = align(
{ modes: ['center', 'min', 'center'], relativeTo: [beamPoints[1], 0, 0] },
straightBeam({ length: depth, thickness, flangeThickness, insetWidth, offsetWidth })
)
return union(beam1, beam2, beam3)
},
/**
* ...
* @memberof profiles.reinforcement
* @param {object} opts
* @returns ...
*/
triBeam: ({ radius, thickness, insetWidth, offsetWidth }) => {
return polyBeam({ radius, segments: 3, thickness, insetWidth, offsetWidth })
},
/**
* ...
* @memberof profiles.reinforcement
* @param {object} opts
* @returns ...
*/
crossBeam: ({ radius, thickness, insetWidth, offsetWidth }) => {
return polyBeam({ radius, segments: 4, thickness, insetWidth, offsetWidth })
},
/**
* ...
* @memberof profiles.reinforcement
* @param {object} opts
* @returns ...
*/
pentaBeam: ({ radius, thickness, insetWidth, offsetWidth }) => {
return polyBeam({ radius, segments: 5, thickness, insetWidth, offsetWidth })
},
/**
* ...
* @memberof profiles.reinforcement
* @param {object} opts
* @returns ...
*/
hexBeam: ({ radius, thickness, insetWidth, offsetWidth }) => {
return polyBeam({ radius, segments: 6, thickness, insetWidth, offsetWidth })
},
}
return reinforcement;
}
module.exports = { init: reinforcementInit }