ALS Center pivot does not work for canvases. ALS Scaling with the Transform tool collapses objects with negative scale.
ALS When picking a surface while creating a curve-on-surface, the pick list should ignore meshes. ALS Unable to pick a curve by its hull when projecting. ALS Alias cannot unstitch a group of stitched pieces. ALS UI Windows layout changes after importing another file format and then importing a wire file.
ALS Pressing any key while on the splash screen causes Alias to crash. ALS Dragging and dropping a file into Alias automatically opens the file instead of prompting to open or import it. ALS Remaining Issues in this Update Surface direction is not consistent when draft surfaces are created on a chain of edges.
ALS Workaround: The default setting is 2. Setting Rail Curves to 2 is similar to using the original Birail tool. Continuity table The Continuity Table displays one row for each boundary curve involved in the rail operation. Use the pop-up menu next to each curve to set the level of continuity you want across that curve. Use the Continuity pop-up menu above the table to set the continuity you want for all of the curves at once.
Click the checkboxes at the end of each row to rebuild the curves to reduce data and improve parameterization. Use the Rebld pop-up menu to set rebuild on or off for all the curves at once. To rebuild interior generation curves, use the Rebuild Interior Gen. Curves option below. This can improve the parameterization and reduce the complexity of the new surface when the curves are complex. Rebuilding curves can also remove multi-knots and reset the weight of all CVs in the rail curve s to 1.
This is necessary for rail curves with multi-knots or CV weights. Continuity G0 Position — Only keep positional continuity. This is the default. G1 Tangent — Try to keep tangency with a surface that shares this edge. G2 Curvature — Try to keep curvature continuity with a surface that shares this edge. Implied Tangent — Try to keep tangency with an implied surface that shares this edge.
The implied surface is the surface that would be created by mirroring the new surface. Implied Curvature — Try to keep curvature continuity with an implied surface that shares this edge.
Implied Tangent and Implied Curvature are powerful features. They let you model one half of a symmetrical surface such as a car body , and maintain continuity at the seam. When you duplicate the surface to create the other half, the seam will already be continuous.
For this to work across a symmetry plane, you must make sure the ends of the curves are tangent or curvature continuous across the symmetry plane. For tangency, this means the tangents are perpendicular to the symmetry plane. Tangent Angle — Try to keep tangency at an angle with a surface that shares this edge.
The Rail Surface tool calculates the tangent angle at both ends of the common edge. If the two angles are different, Rail Surface blends between them to determine the angle to keep at every point along the edge. A tangent angle of 0. Rebuild Interior Gen. Curves Rebuilds all interior generation curves.
This option is only available either when Rail Curves is 1 or when Rail Curves is 2 and at least one rail curve is being rebuilt. Sweep Mode Proportional — Rebuild the rail curves to create a surface with proportionally spaced spans and smooth parameterization based on the first rail curve. This option is only available when Rail Curves is 2 and at least one rail curve is being rebuilt.
Spine — Use a spine curve to control the orientation of the generation curve as it sweeps along the rail. This maintains the visual angle between the generation and rail curves. Parallel — As the generation curve sweeps along the rail, it maintains its original orientation. This option is only available when Rail Curves is 1. It has the same effect as the Flat option in the Extrude tool. Natural — As the generation curve sweeps along the rail, it pivots to maintain the same angle relative to the rail curve.
It has the same effect as the Tube option in the Extrude tool.. Sweep Projection This option controls the plane in which the generation curve is allowed to rotate when the Sweep Mode is View. This option appears when Sweep Mode is View. User — Type a 3D vector in the View Plane boxes to define a plane. Active — Take the rotation plane from the current view window. Sweep Pivot This option is only available when Rail Curves is 1.
Sweeping involves two pivot points: The point on or off the generation curve the Generation Pivot that stays on the rail curve as the generation curve sweeps. The generation curve rotates around and scales from this point.
The point on the rail curve the rail pivot that corresponds to the generation curve before it is swept. In other words, the part of the surface corresponding to this point on the rail curve will have the exact cross section of the generation curve.
You can have Rail Surface set the pivot points automatically as in Extrude , or set them manually for the generation and rail curves. Off Curve — Set the pivots to a specific parameter on the rail curve and a 3D point in space for the generation curve. Use the Rail Pivot Parameter slider to set the parameter for the rail curve.
Space Pivot boxes to set the 3D pivot point for the generation curve. On Curve — Set the pivots to specific parameters on the two curves. Pivot Parameter and Rail Pivot Parameter sliders to set the parameters for each curve. Closest — Set the pivots to the closest points on the two curves.
This option is the default. It works best when the generation curve is close to the start or end points of the rail curve. Transform Control This option controls how the Rail Surface tool modifies the generation curves to stay on the rail curves during the sweep.
It is only available when Rail Curves is 2.
Autodesk Alias Surface 2018 pricing
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In a continuing effort to provide high quality products, this ALS In the Trim tool, you can now use the left, middle, and right mouse buttons directly on the surface to select Keep, Discard, and Divide, respectively, instead of using the interface buttons at the bottom right of the view. The default is to use the interface buttons. ALS Show Preview option is added in the trim command to turn on or off the trim preview. ALS Center pivot does not work for canvases. ALS Scaling with the Transform tool collapses objects with negative scale.