There are 7 categories of HWAT functions, of which one is specific to Tk and the other 6 are for general Tcl usage. These categories are:<\/p>\n
1) Core Function: Primarily helper functions and are not used directly in most cases. They are usually called from within other functions.
\n2) I\/O Functions: Provide assistance for working with files.
\n3) Math Functions: Provide for vector and matrix math calculations.
\n4) Solver Functions: Provide automations for solver specific operations aimed at setting up crash models.
\n5) Utility Functions: Functions for performing commonly required automations.
\n6) Widget Functions: Tk functions to create widgets.
\n7) XML Functions: Use a SAX-based parser and provide functionality for working with XML files.<\/p>\n
An example of a procedure that uses an HWAT command to find an angle between two vectors and return the value in a popup window:<\/p>\n
\r\npackage require hwat;\r\nproc GetAngle { vect1 vect2 } {\r\n package require hwat;\r\n\r\n set angle [::hwat::math::AngleBetweenVectors $vect1 $vect2];\r\n tk_messageBox -message "The angle between the vectors is $angle";\r\n}\r\n\r\nGetAngle [list 1.0 2.0 3.0] [list 4.0 5.0 6.0]\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"There are 7 categories of HWAT functions, of which one is specific to Tk and the other 6 are for general Tcl usage. These categories are: 1) Core Function: Primarily helper functions and are not used directly in most cases. They are usually called from within other functions. 2) I\/O Functions: Provide assistance for working […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","_lmt_disableupdate":"yes","_lmt_disable":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[27],"tags":[],"class_list":["post-532","post","type-post","status-publish","format-standard","hentry","category-tcl"],"modified_by":"gantovnik","jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8bH0k-8A","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":557,"url":"https:\/\/gantovnik.com\/bio-tips\/2020\/06\/getmarkedentity-2017\/","url_meta":{"origin":532,"position":0},"title":"#80 GetMarkedEntity (2017)","author":"gantovnik","date":"2020-06-11","format":false,"excerpt":"::hwat::utils::GetMarkedEntity \"components\" 1 \"by sets\" set1 Return a list containing the IDs of the entities, 0 if no entity is found and {} if unsuccessful. If any one of the arguments is list in Tcl, like [list 1 2 3] or {1 2 3}, use eval before GetMarkedEntity command. For\u2026","rel":"","context":"In "HyperMesh"","block_context":{"text":"HyperMesh","link":"https:\/\/gantovnik.com\/bio-tips\/category\/hypermesh\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1400,"url":"https:\/\/gantovnik.com\/bio-tips\/2022\/02\/210-parametric-curve-in-3d-2-2-2-2-2-2-2-2-2-2-2-2-2-3-2-2-2-2-2-2-2-2\/","url_meta":{"origin":532,"position":1},"title":"#267 tk_getOpenFile in tcl\/tk","author":"gantovnik","date":"2022-02-10","format":false,"excerpt":"#267 tk_getOpenFile in tcl\/tk. [code language=\"python\"] set types { {\"All Source Files\" {.tcl} } {\"Image Files\" {.txt} } {\"All files\" *} } proc doIt {label} { global types set file [tk_getOpenFile -filetypes $types -parent .] $label configure -text $file } label .l -text \"No File\" button .b -text \"Select a\u2026","rel":"","context":"In "tcl"","block_context":{"text":"tcl","link":"https:\/\/gantovnik.com\/bio-tips\/category\/tcl\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/gantovnik.com\/bio-tips\/wp-content\/uploads\/2022\/02\/ex267.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":10657,"url":"https:\/\/gantovnik.com\/bio-tips\/2025\/11\/itertools-dropwhile-python-example\/","url_meta":{"origin":532,"position":2},"title":"#465 Using itertools.dropwhile in Python: Skip Values Until a Condition Fails","author":"gantovnik","date":"2025-11-04","format":false,"excerpt":"Python\u2019s itertools module provides a robust set of tools for working with iterators. One of the lesser-known but convenient functions is itertools.dropwhile(). It allows you to skip elements in an iterable as long as a specific condition remains true \u2014 and once the condition fails, it yields the rest of\u2026","rel":"","context":"In "python"","block_context":{"text":"python","link":"https:\/\/gantovnik.com\/bio-tips\/category\/python\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1047,"url":"https:\/\/gantovnik.com\/bio-tips\/2021\/11\/187-feet-to-meter-converter-using-python-tcl-tk\/","url_meta":{"origin":532,"position":3},"title":"#187 Feet to meter converter using python tcl\/tk","author":"gantovnik","date":"2021-11-07","format":false,"excerpt":"[code language=\"python\"] package require Tk wm title . \"Feet to Meters\" grid [ttk::frame .c -padding \"3 3 12 12\"] -column 0 -row 0 -sticky nwes grid columnconfigure . 0 -weight 1; grid rowconfigure . 0 -weight 1 grid [ttk::entry .c.feet -width 7 -textvariable feet] -column 2 -row 1 -sticky we\u2026","rel":"","context":"In "tcl"","block_context":{"text":"tcl","link":"https:\/\/gantovnik.com\/bio-tips\/category\/tcl\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/gantovnik.com\/bio-tips\/wp-content\/uploads\/2021\/11\/ex187.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1403,"url":"https:\/\/gantovnik.com\/bio-tips\/2022\/02\/210-parametric-curve-in-3d-2-2-2-2-2-2-2-2-2-2-2-2-2-3-2-2-2-2-2-2-2-2-2\/","url_meta":{"origin":532,"position":4},"title":"#268 A progress indicator using tcl\/tk","author":"gantovnik","date":"2022-02-10","format":false,"excerpt":"#268 A progress indicator using tcl\/tk. [code language=\"python\"] # Create a simple progress gauge set, initially set to 0% proc gaugeCreate {win {color \"gray\"} } { frame $win canvas $win.display \\ -borderwidth 0 \\ -background white \\ -highlightthickness 0 \\ -width 200 \\ -height 20 pack $win.display -expand yes $win.display\u2026","rel":"","context":"In "tcl"","block_context":{"text":"tcl","link":"https:\/\/gantovnik.com\/bio-tips\/category\/tcl\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/gantovnik.com\/bio-tips\/wp-content\/uploads\/2022\/02\/ex268.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":785,"url":"https:\/\/gantovnik.com\/bio-tips\/2020\/11\/136-files-in-tcl\/","url_meta":{"origin":532,"position":5},"title":"#136 Files in tcl","author":"gantovnik","date":"2020-11-12","format":false,"excerpt":"#136 Files in tcl It is possible to convert a filename to the Tcl format. Notice the curly braces around the filename so that the \\ character isn\u2019t interpreted as the escape character. [code language=\"python\"] set filename {C:\\My_files\\readme.txt}; C:\\My_files\\readme.txt file join [file nativename $filename]; C:\/My_files\/readme.txt [\/code] While not recommended, it\u2026","rel":"","context":"In "HyperMesh"","block_context":{"text":"HyperMesh","link":"https:\/\/gantovnik.com\/bio-tips\/category\/hypermesh\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/posts\/532","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/comments?post=532"}],"version-history":[{"count":0,"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/posts\/532\/revisions"}],"wp:attachment":[{"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/media?parent=532"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/categories?post=532"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gantovnik.com\/bio-tips\/wp-json\/wp\/v2\/tags?post=532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}