Translations:Sketcher ConstrainSnellsLaw/4/en: Difference between revisions

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* You will need two lines that are to follow a beam of light, and a curve to act as an interface. The lines should be on different sides of the interface.
* You will need two lines that are to follow a beam of light, and a curve to act as an interface. The lines should be on different sides of the interface.
* Select the endpoint of one line, an endpoint of another line, and the interface edge. The interface can be a line, circle/arc, ellipse/arc of ellipse. Note the order you've selected the endpoints.
* Select the endpoint of one line, an endpoint of another line, and the interface edge. The interface can be a [[Sketcher_CreateLine|Line]], an [[Sketcher_CompCreateArc|Arc]], a [[Sketcher_CompCreateCircle|Circle]] or a [[Sketcher_CompCreateConic|Conic]]. Note the order you've selected the endpoints.
* Invoke the constraint. A dialog will appear asking for a ratio of indices of refraction n2/n1. n2 corresponds to the medium where the second selected endpoint's line resides, n1 is for the first line.
* Invoke the constraint. A dialog will appear asking for a ratio of indices of refraction n2/n1. n2 corresponds to the medium where the second selected endpoint's line resides, n1 is for the first line.
* The endpoints will be made coincident (if needed), constrained onto the interface (if needed), and the Snell's law will become constrained.
* The endpoints will be made coincident (if needed), constrained onto the interface (if needed), and the Snell's law will become constrained.

Revision as of 16:14, 30 December 2020

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Message definition (Sketcher ConstrainSnellsLaw)
# Prepare two lines to represent a beam of light, and an edge to act as an interface. The lines should be on different sides of the interface. The interface can be a [[Sketcher_CreateLine|line]], an [[Sketcher_CreateArc|arc]], a [[Sketcher_CreateCircle|circle]] or a [[Sketcher_CompCreateConic|conic]].
# Select an endpoint of the first line, an endpoint of the second line, and the interface edge. Note the selection order of the endpoints.
# There are several ways to invoke the tool:
#* Select the {{MenuCommand|Sketch → Sketcher constraints → [[Image:Sketcher_ConstrainSnellsLaw.svg|16px]] Constrain refraction (Snell's law)}} option from the menu.
#* Use the keyboard shortcut: {{KEY|K}} then {{KEY|W}}.
# The {{MenuCommand|Refractive index ratio}} dialog opens.
# Enter the {{MenuCommand|Ratio n2/n1}}. Where {{MenuCommand|n2}} is for the medium where the second selected line resides, and {{MenuCommand|n1}} is for the first line's medium.
# A Snell's law constraint is added. If required the endpoints are made [[Sketcher_ConstrainCoincident|coincident]] and constrained [[Sketcher_ConstrainPointOnObject|onto the interface]]. These additional constraints are called [[Sketcher_helper_constraint|helper constraints]].
  • You will need two lines that are to follow a beam of light, and a curve to act as an interface. The lines should be on different sides of the interface.
  • Select the endpoint of one line, an endpoint of another line, and the interface edge. The interface can be a Line, an Arc, a Circle or a Conic. Note the order you've selected the endpoints.
  • Invoke the constraint. A dialog will appear asking for a ratio of indices of refraction n2/n1. n2 corresponds to the medium where the second selected endpoint's line resides, n1 is for the first line.
  • The endpoints will be made coincident (if needed), constrained onto the interface (if needed), and the Snell's law will become constrained.