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Best Of

OMG! Section View is awesome!

I've been using OnShape as a hobbyist for a while now and for whatever reason only just discovered Section View. See Tech Tip: How to Use 3D Section Views in Onshape

If you are designing anything moderately complex or that has internal structure this is the bomb. Previously I'd mess around making things transparent or hiding things either when working on the parts or showing people the design. Forget all that. Just section it. So, if you don't know about this, check it out. If you do, why didn't you tell me?!

Thanks OnShape team

jeff_mcaffer

Re: Golden angle pattern (Sunflower)

@digitalcarbon is that the final script?

Could you share for posterity?

Ste_Wilson

Re: is it possible deactivate a thread so you will not be notified?

I think not being able to resurrect an old thread is probably a good thing. Many times when old threads are resurrected it seems to be with the *IT'S BEEN X YEARS SINCE, WHY HAS THIS THING NOT BEEN IMPLEMENTED* kind of thing. Which is, sometimes, a valid statement, but isn't very helpful.

Ste_Wilson

Re: is it possible deactivate a thread so you will not be notified?

It might be a good idea to have a message popping up when answering to a very old thread: "No activities were recorded in this discussion since xxx days. Do you want to open a new discussion instead? A link to this one will be automatically included in the initial post, if you click [OK]"

martin_kopplow

Re: Issues with Transforming imported Model

It depends on what you imported but "transform by mate connector" is the best option. You may need to create a some reference geometry (like a sketch to find the center, etc…) if there is no "obvious" reference point on your imported model.

eric_pesty

Re: Copy from a sketch on one plane to another plane with only different "Z values

Thank you Michael. This is what I was looking for. My problem is solved

arthur_block

Re: Best way to convert a mesh to a solid

@john_mcclary the SLDASM file only contains graphics (no BREP) intended for the eDrawings viewer only. How on earth did they get an assembly with no parts? If you have SW Premium, turn on the ScanTo3D add-in first before importing the mesh - that should create a mesh similar to the one you see in Onshape.

NeilCooke

Re: Golden angle pattern (Sunflower)

@EvanReese Thanks. of course I know zip about programing. Except how to cut and paste.

So i took your "embarrassing" code and dropped it into Grok 3.

Below is what it sent back:

FeatureScript 1188;
import(path : "onshape/std/geometry.fs", version : "1188.0");

// Icon import (kept for UI consistency)
icon::import(path : "e8e9c163f08fa68c8a76741c", version : "79a131bdedd16200dcbcb8dd");

// Default bounds for sunflower pattern
export const SUNFLOWER_PATTERN_BOUNDS = {
(meter) : [-500, 0.001, 500],
(centimeter) : 0.2,
(millimeter) : 2,
(inch) : 0.1,
(foot) : 0.1,
(yard) : 0.025
} as LengthBoundSpec;

export const SUNFLOWER_COUNT_BOUNDS = {
(unitless) : [1, 25, 1e5]
} as IntegerBoundSpec;

// UI Definition for Sunflower Pattern
annotation { "Feature Type Name" : "Sunflower Pattern", "Icon" : icon::BLOB_DATA }
export const SunflowerPattern = defineFeature(function(context is Context, id is Id, definition is map)
precondition
{
annotation { "Name" : "Center Point", "Filter" : EntityType.VERTEX && SketchObject.YES || BodyType.MATE_CONNECTOR, "MaxNumberOfPicks" : 1 }
definition.center is Query;

    annotation { "Name" : "Seed Diameter", "Default" : 2 * millimeter }
    isLength(definition.seedDia, SUNFLOWER_PATTERN_BOUNDS);

    annotation { "Name" : "Inside Diameter", "Default" : 5 * millimeter }
    isLength(definition.innerDia, SUNFLOWER_PATTERN_BOUNDS);

    annotation { "Name" : "Outside Diameter", "Default" : 50 * millimeter }
    isLength(definition.outerDia, SUNFLOWER_PATTERN_BOUNDS);

    annotation { "Name" : "Seed Count", "Default" : 25 }
    isInteger(definition.count, SUNFLOWER_COUNT_BOUNDS);

    annotation { "Name" : "Depth", "Default" : 1 * millimeter }
    isLength(definition.depth, SUNFLOWER_PATTERN_BOUNDS);

    annotation { "Name" : "Flip Direction", "UIHint" : "OPPOSITE_DIRECTION", "Default" : false }
    definition.flip is boolean;
}
{
    // Validate diameters
    if (definition.innerDia >= definition.outerDia)
        throw regenError("Inside Diameter must be less than Outside Diameter", ["innerDia", "outerDia"]);

    // Core variables
    const goldenAngle = (3 - sqrt(5)) * PI * radian;
    var normal;

    // Determine normal from center point
    try silent
    {
        normal = evOwnerSketchPlane(context, { "entity" : definition.center }).normal;
    }
    try silent
    {
        normal = evMateConnector(context, { "mateConnector" : definition.center }).zAxis;
    }
    if (normal == undefined)
        throw regenError("Invalid Center Point: Must be a sketch vertex or mate connector");

    // Create sketch plane
    var origin = evVertexPoint(context, { "vertex" : definition.center });
    var skplane = plane(origin, normal);
    opPlane(context, id + "plane1", { "plane" : skplane });

    // Create and solve sketch for seed circle
    var theSketch = newSketchOnPlane(context, id + "sketch1", { "sketchPlane" : skplane });
    skCircle(theSketch, "circle1", {
        "center" : vector(0, 0) * inch,
        "radius" : definition.seedDia / 2
    });
    skSolve(theSketch);

    // Extrude the seed circle
    var extrudeNormal = definition.flip ? -normal : normal;
    opExtrude(context, id + "extrude1", {
        "entities" : qSketchRegion(id + "sketch1"),
        "direction" : extrudeNormal,
        "endBound" : BoundingType.BLIND,
        "endDepth" : definition.depth
    });

    // Sunflower pattern transforms within inner and outer diameters
    var axis = line(origin, normal);
    var transforms = [];
    var instanceNames = [];
    var innerRadius = definition.innerDia / 2;
    var outerRadius = definition.outerDia / 2;
    var range = outerRadius - innerRadius;
    var step = definition.count > 1 ? range / (definition.count - 1) : 0; // Handle single instance case

    for (var i = 0; i < definition.count; i += 1)
    {
        var dist = definition.count > 1 ? innerRadius + (step * i) : innerRadius; // Single instance at inner radius
        var angle = goldenAngle * i;
        transforms = append(transforms, rotationAround(axis, angle) * transform(skplane.x * dist));
        instanceNames = append(instanceNames, "_" ~ toString(i));
    }

    // Apply pattern
    var seedBody = qCreatedBy(id + "extrude1", EntityType.BODY);
    opPattern(context, id + "pattern1", {
        "entities" : seedBody,
        "transforms" : transforms,
        "instanceNames" : instanceNames
    });

    // Cleanup
    opDeleteBodies(context, id + "deleteBodies", {
        "entities" : qUnion([qCreatedBy(id + "plane1"), qCreatedBy(id + "sketch1")])
    });
});

digitalcarbon