0030971: Visualization - can Font_BRepFont generate composite curve to C1 rather than to C0? - MantisBT

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ID

Project

Category

View Status

Date Submitted

Last Update

0030971

Community

[OCCT] OCCT:Visualization

public

2019-09-17 10:11

2019-09-17 13:03

Reporter

Vico Liang

Assigned To

kgv

Priority

normal

Severity

feature

Status

new

Resolution

open

Platform

OS

OS Version

Product Version

Target Version

[OCCT] Unscheduled

Fixed in Version

Summary

0030971: Visualization - can Font_BRepFont generate composite curve to C1 rather than to C0?

Description

void Font_BRepFont::SetCompositeCurveMode (const Standard_Boolean theToConcatenate);

Above method will generate composite curve to C0 if set the flag to true, it's no a good practice. In real application, C1 is more preferable than C0. Another reason is that C1 will good for later modeling algorithm base on font, such as extrusion, revolution, etc. C0 will fail the modeling algorithm in most cases.

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Test case number

Relationships

child of

closed

Open CASCADE

Text to BRep functionality

Notes
(0087191) kgv (developer) 2019-09-17 11:10 edited on: 2019-09-17 11:11	This flag within Font_BRepFont is an attempt to reduce geometric definition of the glyph shape. Currently, it combines ALL curves within a glyph contour, therefore there is no reason to expect better continuity than C0. It could be possible detecting smoothly connected segments within glyph curve and merge only them, but I have no idea if this actually happens in practice. Patches are welcome.

(0087198) Vico Liang (developer) 2019-09-17 13:03	It's possible to split the composite spline curve at C0 point. This changes should not be hard.

Issue History
Date Modified	Username	Field	Change
2019-09-17 10:11	Vico Liang	New Issue
2019-09-17 10:11	Vico Liang	Assigned To	=> kgv
2019-09-17 11:10	kgv	Note Added: 0087191
2019-09-17 11:10	kgv	Severity	minor => feature
2019-09-17 11:10	kgv	Target Version	7.5.0 => Unscheduled
2019-09-17 11:10	kgv	Summary	Can Font_BRepFont generate composite curve to C1 rather than to C0? => Visualization - can Font_BRepFont generate composite curve to C1 rather than to C0?
2019-09-17 11:11	kgv	Note Edited: 0087191	View Revisions
2019-09-17 11:11	kgv	Relationship added	child of 0024181
2019-09-17 13:03	Vico Liang	Note Added: 0087198

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