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chairs_unit.pas
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1869 lines (1167 loc) · 56.2 KB
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(*
================================================================================
This file is part of OpenTemplot2024, a computer program for the design of model railway track.
Copyright (C) 2024 Martin Wynne. email: martin@85a.uk
This program is free software: you may redistribute it and/or modify
it under the terms of the GNU General Public Licence as published by
the Free Software Foundation, either version 3 of the Licence, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public Licence for more details.
You should have received a copy of the GNU General Public Licence
along with this program. See the file: licence.txt
Or if not, refer to the web site: https://www.gnu.org/licenses/
================================================================================
This file was saved from Delphi5
This file was derived from Templot2 version 244d
*)
unit chairs_unit;
// 2D and 3D data for chairs
{$MODE Delphi}
{$ALIGN OFF}
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, ExtCtrls,
chair_frame_unit;
type
{ Tchairs_form }
Tchairs_form = class(TForm)
datestamp_label: TLabel;
export_checkbox1: TCheckBox;
frame_label: TLabel;
include_checkbox0: TCheckBox;
include_checkbox1: TCheckBox;
include_checkbox2: TCheckBox;
Label3: TLabel;
export_solid_button: TButton;
export_slots_button: TButton;
export_loose_only_button: TButton;
Label18: TLabel;
cancel_button: TButton;
group_match_button: TButton;
Label19: TLabel;
Label20: TLabel;
Label21: TLabel;
loose_checkbox0: TCheckBox;
ok_panel: TPanel;
ok_button: TButton;
ok_panel_2: TPanel;
ok_button_2: TButton;
Button1: TButton;
Label32: TLabel;
Label33: TLabel;
Label34: TLabel;
Label35: TLabel;
Shape1: TShape;
help_button: TButton;
Label36: TLabel;
Label37: TLabel;
chairs_scrollbox: TScrollBox;
Label4: TLabel;
Label6: TLabel;
Label7: TLabel;
Label8: TLabel;
Label9: TLabel;
Label10: TLabel;
Label11: TLabel;
Label12: TLabel;
Label24: TLabel;
Label25: TLabel;
Label26: TLabel;
Label27: TLabel;
Label23: TLabel;
Label28: TLabel;
Label29: TLabel;
Label30: TLabel;
Label31: TLabel;
frame_S1: Tchair_frame;
frame_L1: Tchair_frame;
frame_1P_stock: Tchair_frame;
frame_P: Tchair_frame;
frame_1P_switch: Tchair_frame;
frame_CC_run: Tchair_frame;
frame_3P_stock: Tchair_frame;
frame_3P_switch: Tchair_frame;
frame_CC_check: Tchair_frame;
frame_CCLR_run: Tchair_frame;
frame_CCLR_check: Tchair_frame;
frame_M1: Tchair_frame;
frame_ZY_ms: Tchair_frame;
frame_ZY_ts: Tchair_frame;
frame_XN_ms: Tchair_frame;
frame_XN_ts: Tchair_frame;
frame_XA_ms: Tchair_frame;
frame_XA_ts: Tchair_frame;
frame_AA_ms: Tchair_frame;
frame_AA_ts: Tchair_frame;
frame_DD_ms: Tchair_frame;
frame_DD_ts: Tchair_frame;
frame_EF_ms: Tchair_frame;
frame_EF_ts: Tchair_frame;
frame_BB_ms: Tchair_frame;
frame_BB_ts: Tchair_frame;
frame_AB_ms: Tchair_frame;
frame_AB_ts: Tchair_frame;
Panel1: TPanel;
Panel2: TPanel;
Label5: TLabel;
Label13: TLabel;
Label14: TLabel;
Label15: TLabel;
Label16: TLabel;
Label17: TLabel;
Label22: TLabel;
chair_frame_all: Tchair_frame;
frame_S1J: Tchair_frame;
Label38: TLabel;
frame_CD_ms: Tchair_frame;
frame_CD_ts: Tchair_frame;
Label2: TLabel;
Label39: TLabel;
Label40: TLabel;
Label41: TLabel;
Label42: TLabel;
Label43: TLabel;
Label45: TLabel;
Label46: TLabel;
Label47: TLabel;
Label48: TLabel;
Label55: TLabel;
Label56: TLabel;
Label57: TLabel;
Label58: TLabel;
Label60: TLabel;
Label61: TLabel;
Label62: TLabel;
Label63: TLabel;
Label65: TLabel;
Label66: TLabel;
Label67: TLabel;
Label68: TLabel;
Label70: TLabel;
Label71: TLabel;
Label72: TLabel;
Label73: TLabel;
Label50: TLabel;
Label51: TLabel;
Label52: TLabel;
Label53: TLabel;
frame_SC: Tchair_frame;
frame_S1N: Tchair_frame;
frame_L1CCLR_run: Tchair_frame;
frame_S1O: Tchair_frame;
frame_L1CCRL_check: Tchair_frame;
frame_PW_wing: Tchair_frame;
frame_PWL_run: Tchair_frame;
frame_PW_run: Tchair_frame;
frame_PWL_wing: Tchair_frame;
frame_PWR_wing: Tchair_frame;
frame_SS: Tchair_frame;
frame_PWR_run: Tchair_frame;
frame_MS: Tchair_frame;
frame_SDS: Tchair_frame;
chair_frame19: Tchair_frame;
frame_SDP: Tchair_frame;
chair_frame21: Tchair_frame;
chair_frame22: Tchair_frame;
chair_frame23: Tchair_frame;
chair_frame24: Tchair_frame;
frame_L1CCLR_check: Tchair_frame;
frame_L1CC_check: Tchair_frame;
frame_L1CCRL_run: Tchair_frame;
frame_L1CC_run: Tchair_frame;
Label1: TLabel;
Label44: TLabel;
Label49: TLabel;
Label54: TLabel;
chair_frame25: Tchair_frame;
chair_frame26: Tchair_frame;
chair_frame27: Tchair_frame;
chair_frame28: Tchair_frame;
Shape2: TShape;
procedure FormCreate(Sender: TObject);
procedure export_solid_buttonClick(Sender: TObject);
procedure export_slots_buttonClick(Sender: TObject);
procedure export_loose_only_buttonClick(Sender: TObject);
procedure group_match_buttonClick(Sender: TObject);
procedure ok_panelClick(Sender: TObject);
procedure chair_frame_allinclude_checkbox0Click(Sender: TObject);
procedure chair_frame_allinclude_checkbox1Click(Sender: TObject);
procedure chair_frame_allloose_checkbox0Click(Sender: TObject);
procedure chair_frame_allexport_checkbox1Click(Sender: TObject);
procedure chair_frame_allexport_checkbox2Click(Sender: TObject);
procedure chair_frame_allinclude_checkbox2Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
chairs_form: Tchairs_form;
type
T_2d_data=record // chairing data for 2D (base outlines, corner rads, screw/bolt centres) ...
// 1=S1 chair
// 2=P chair
// 3=
// 4=
// 5=L1 bridge chair
// 6=M1 bridge chair
// 7=S1J joint chair
// 8=S1O half-bolted chair outer
// 9=S1N half-bolted chair inner
// 10=switch block chair stock rail half
// 11=switch block chair switch rail half, type 1 (no jaw) A B C D switches 1PR and 2PR
// 12=switch block chair switch rail half, type 2 (normal key) A B C D E F switches
// 13=switch block chair switch rail half, type 3 (inner key) E F switches 1PR and 2PR
// 14=CCW check flare-in
// 15=CC check rail
// 16=CCE chec k flare-out
// 17=
// 18=
// 19=
// 20=
// V-crossing chairs...
// 21=ZY
// 22=XN
// 23=XA
// 24=AA
// 25=AB
// 26=BB/BC
// 27=CD
// 28=EF
// 98=FG dummy chair foot groove 234a
// 99=RG dummy chair rail head groove 234a
// chair code 1, S1 ordinary chairs Standard Railway Equipment 1926 S1 ordinary chairs ...
S1_chair_outlong:extended; // from gauge-face
S1_chair_inlong:extended; // chair total length 14.1/2"
S1_chair_halfwide:extended; // chair width 8" /2
S1_chair_crad_inner:extended; // corner rad 1"
S1_chair_crad_outer:extended;
// screw/bolt centres ...
S1_inbolt_1x:extended;
S1_inbolt_2x:extended;
S1_outbolt_1x:extended;
S1_outbolt_2x:extended;
S1_bolts_from_end:extended;
// chair code 5, L1 bridge chairs ...
L1_chair_outlong:extended; // Standard Railway Equipment 1926 L1 bridge chairs
L1_chair_inlong:extended; // chair total length 10.1/2"
L1_chair_halfwide:extended; // chair width 11" /2
L1_chair_jaw_halfwide:extended; // chair jaw 4" /2
L1_chair_crad_inner:extended; // base corner rad
L1_chair_crad_outer:extended;
// screw/bolt centres ...
L1_inbolt_1x:extended;
L1_inbolt_2x:extended;
L1_outbolt_1x:extended;
L1_outbolt_2x:extended;
L1_bolts_from_end:extended;
// chair code 2, P slide chairs ...
P_chair_outlong:extended; // from gauge-face
P_chair_inlong:extended; // chair inner length
P_chair_inlong_mod:extended; // modified for increased model switch opening
P_chair_halfwide:extended; // chair width 8" /2
P_chair_crad_inner:extended; // corner rad 1"
P_chair_crad_outer:extended;
// screw/bolt centres ...
P_inbolt_1x:extended;
P_inbolt_2x:extended;
P_outbolt_1x:extended;
P_outbolt_2x:extended;
P_bolts_from_end:extended;
// chair code 10, SC fictional 4-bolt ordinary chairs ...
SC_chair_outlong:extended;
SC_chair_inlong:extended;
SC_chair_halfwide:extended;
SC_inbolt_1x:extended;
SC_inbolt_2x:extended;
SC_outbolt_1x:extended;
SC_outbolt_2x:extended;
SC_bolts_from_end:extended;
SC_chair_crad_inner:extended;
SC_chair_crad_outer:extended;
// chair_code 11, block slide chairs 1 & 2 (no inner jaws) ...
inner_trim_stock_rail:extended;
mid_jaw_space:extended;
PLR1_chair_outlong:extended;
PLR1_chair_inlong:extended;
PLR1_block_slide_chair_inlong:extended;
PLR1_chair_halfwide:extended;
PLR1_inbolt_1x:extended;
PLR1_inbolt_2x:extended;
PLR1_outbolt_1x:extended;
PLR1_outbolt_2x:extended;
PLR1_bolts_from_end:extended;
PLR1_chair_crad_inner:extended;
PLR1_chair_crad_outer:extended;
// check rail chairs ...
// chair_code 15 ordinary check chairs ...
CC_chair_outlong:extended;
CC_chair_halfwide:extended;
CC_inbolt_1x:extended;
CC_inbolt_2x:extended;
CC_outbolt_1x:extended;
CC_outbolt_2x:extended;
CC_bolts_from_end:extended;
CC_chair_crad_inner:extended;
CC_chair_crad_outer:extended;
// V-crossing 8" rectangular chairs ... 239a
// chair_codes 21,27,28 ZY CD EF
X_chair_outlong:extended; // later calculated
X_chair_inlong:extended; // later calculated
X_chair_halfwide:extended;
X_inbolt_1x:extended;
X_inbolt_2x:extended;
X_outbolt_1x:extended;
X_outbolt_2x:extended;
X_bolts_from_end:extended;
X_chair_crad_inner:extended;
X_chair_crad_outer:extended;
X_seat_top_halfwide:extended;
// V-crossing wide-middle chairs ... 239a
// temp represented as wider rectangular chairs, 9.25" wide
xing_chair_end_from_rail:extended; // 245a
// chair_codes 22,23,24,25,26 XN XA AA AB BB/BC
// XN...
XN_chair_outlong:extended;
XN_chair_halfwide:extended;
XN_chair_mid_halfwide_near:extended; // 245a wide mid section is 10.5" wide
XN_chair_mid_halfwide_far:extended; // 245a
XN_inbolt_1x:extended;
XN_inbolt_2x:extended;
XN_outbolt_1x:extended;
XN_outbolt_2x:extended;
XN_bolts_from_end:extended;
XN_chair_crad_inner:extended;
XN_chair_crad_outer:extended;
XN_seat_top_halfwide:extended;
// XA...
XA_chair_outlong:extended;
XA_chair_halfwide:extended;
XA_chair_mid_halfwide_near:extended; // 245a temp wide mid section is 10.5" wide
XA_chair_mid_halfwide_far:extended; // 245a
XA_inbolt_1x:extended;
XA_inbolt_2x:extended;
XA_outbolt_1x:extended;
XA_outbolt_2x:extended;
XA_bolts_from_end:extended;
XA_chair_crad_inner:extended;
XA_chair_crad_outer:extended;
XA_seat_top_halfwide:extended;
// AA slab & bracket 244d
AA_slab_outlong_near:extended;
AA_slab_outlong_far:extended;
AA_halfwide_near:extended;
AA_slab_halfwide_far:extended;
// chair_code=12 , 3P..9P block heel chairs (with inner jaw) ...
PLR3_chair_outlong:extended;
PLR3_block_heel_chair_inlong:extended;
PLR3_chair_halfwide:extended;
PLR3_inbolt_1x:extended;
PLR3_inbolt_2x:extended;
PLR3_outbolt_1x:extended;
PLR3_outbolt_2x:extended;
PLR3_bolts_from_end:extended;
PLR3_chair_crad_inner:extended;
PLR3_chair_crad_outer:extended;
PLR3_seat_top_halfwide:extended; // 3P..11P switch heel block chairs, switch rail seat
// chair_code 7, S1J joint chairs ...
S1J_chair_outlong:extended;
S1J_chair_inlong:extended;
S1J_chair_halfwide:extended;
S1J_inbolt_1x:extended;
S1J_inbolt_2x:extended;
S1J_outbolt_1x:extended;
S1J_outbolt_2x:extended;
S1J_bolts_from_end:extended;
S1J_chair_crad_inner:extended;
S1J_chair_crad_outer:extended;
// chair code 98, FG foot groove dummy chairs ...
FG_chair_halfwide:extended; // chair width
FG_chair_crad_inner:extended; // corner rad
FG_chair_crad_outer:extended;
// screw/bolt centres ...
FG_inbolt_1x:extended;
FG_inbolt_2x:extended;
FG_outbolt_1x:extended;
FG_outbolt_2x:extended;
FG_bolts_from_end:extended;
// chair code 99, RG rail groove dummy chairs ...
RG_chair_halfwide:extended; // chair width
RG_chair_crad_inner:extended; // corner rad
RG_chair_crad_outer:extended;
// screw/bolt centres ...
RG_inbolt_1x:extended;
RG_inbolt_2x:extended;
RG_outbolt_1x:extended;
RG_outbolt_2x:extended;
RG_bolts_from_end:extended;
end;//record T_2d_data
T_3d_data=record // chairing data for 3D (chair jaws, thicknesses, heights) ...
seat_thickness:extended; // full-size inches chair seating thickness 1.75"
chair_plinth_thick:extended; // chair plinth is a nominal area inside the outline perimeter
// (rectangle on corner rad centres, nominal socket rectangle for Plug Track)
L1_chair_plinth_thick:extended;
P_chair_plinth_thick:extended;
SC_CC_chair_plinth_thick:extended;
X_chair_plinth_thick:extended;
AA_slab_plinth_thick:extended; // 244e
chair_plinth_spacing:extended;
chair_edge_thick:extended;
L1_chair_edge_thick:extended;
P_chair_edge_thick:extended;
SC_CC_chair_edge_thick:extended;
X_chair_edge_thick:extended;
outer_jaw_face:extended; // outer jaw from gauge-face (3.15/16" for vertical rail)
boss_height:extended; // inches full-size up from base of chair...
ferrule_height:extended;
bolt_head_height:extended;
boss_dia:extended;
hole_dia:extended; // ferrule dia
key_length:extended;
key_deformation:extended; // 235b
key_pad_taper:extended;
sj_key_pad_length:extended; // 237a solid jaw key ..
lj_key_pad_length:extended; // 237a loose jaw key ..
//-------------------
// S1 ordinary chair
S1_seat_top_halfwide:extended; // almost full width 7.7/8" /2
// S1 outer jaw (2 ribs) ...
S1_outjaw_height_top:extended; // from base
// top x-section...
S1_outjaw_half_width_top:extended;
S1_outjaw_half_rib_space_top:extended; // half-width between ribs
S1_outjaw_rib_depth_top:extended;
S1_outjaw_rib_width_top:extended;
S1_outjaw_rib_rad_top:extended;
S1_outjaw_fillet_rad_top:extended;
S1_outjaw_depth_top:extended; // behind ribs
// middle x-section ...
S1_outjaw_half_width_mid:extended;
S1_outjaw_height_mid:extended; // from base
S1_outjaw_half_rib_space_mid:extended; // half-width between ribs
S1_outjaw_rib_depth_mid:extended;
S1_outjaw_rib_width_mid:extended;
S1_outjaw_rib_rad_mid:extended;
S1_outjaw_fillet_rad_mid:extended;
S1_outjaw_depth_mid:extended; // behind ribs
S1_outjaw_slope_mid:extended; // side slope 1:n from top
// seat x-section...
S1_outjaw_half_width_seat:extended;
S1_outjaw_half_rib_space_seat:extended; // half-width between ribs
S1_outjaw_rib_depth_seat:extended;
S1_outjaw_rib_width_seat:extended;
S1_outjaw_rib_rad_seat:extended;
S1_outjaw_fillet_rad_seat:extended;
S1_outjaw_depth_seat:extended; // behind ribs
S1_outjaw_slope_seat:extended; // side slope 1:n from middle
// plinth x-section ...
S1_outjaw_half_width_plinth:extended;
S1_outjaw_depth_plinth:extended; // behind ribs
S1_outjaw_half_rib_space_plinth:extended; // half-width between ribs
S1_outjaw_rib_depth_plinth:extended;
S1_outjaw_rib_width_plinth:extended;
S1_outjaw_rib_rad_plinth:extended;
S1_outjaw_fillet_rad_plinth:extended;
S1_outjaw_slope_plinth:extended; // side slope 1:n from seat
//-------------------
// S1 inner jaw (1 rib) ...
S1_injaw_height_insert_top:extended; // top of inner jaw
S1_injaw_height_insert_bot:extended; // bottom of insert
S1_injaw_height_stand:extended; // fixed stand part (remainder of jaw height is an insert in the rail web)
S1_injaw_height_upmid:extended;
S1_injaw_height_lomid:extended;
S1_injaw_slope_insert:extended; // top of inner jaw
S1_injaw_slope_stand:extended; // side slope 1:n from top
S1_injaw_slope_upmid:extended; // side slope 1:n from stand
S1_injaw_slope_lomid:extended; // side slope 1:n from upper middle
S1_injaw_slope_seat:extended; // side slope 1:n from mid
S1_injaw_slope_plinth:extended; // side slope 1:n from seat
// insert x-section...
S1_injaw_half_width_insert_top:extended;
S1_injaw_half_width_insert_bot:extended;
S1_injaw_depth_insert:extended;
// stand x-section...
S1_injaw_half_width_stand:extended;
S1_injaw_side_space_stand:extended;
S1_injaw_fillet_rad_stand:extended;
S1_injaw_depth_stand:extended; // behind rib
S1_injaw_corner_rad_stand:extended;
// upper middle x-section (top of rib) (233d level with web face lower)...
S1_injaw_half_width_upmid:extended;
S1_injaw_side_space_upmid:extended;
S1_injaw_fillet_rad_upmid:extended;
S1_injaw_depth_upmid:extended; // behind rib
S1_injaw_corner_rad_upmid:extended;
// lower middle x-section ... (233d level with rail foot)...
S1_injaw_half_width_lomid:extended;
S1_injaw_side_space_lomid:extended;
S1_injaw_fillet_rad_lomid:extended;
S1_injaw_depth_lomid:extended; // behind rib
S1_injaw_corner_rad_lomid:extended;
// seat x-section ...
S1_injaw_half_width_seat:extended;
S1_injaw_side_space_seat:extended;
S1_injaw_fillet_rad_seat:extended;
S1_injaw_depth_seat:extended; // behind rib
S1_injaw_corner_rad_seat:extended;
// plinth x-section ...
S1_injaw_half_width_plinth:extended;
S1_injaw_side_space_plinth:extended;
S1_injaw_fillet_rad_plinth:extended;
S1_injaw_depth_plinth:extended; // behind rib
S1_injaw_corner_rad_plinth:extended;
// L1 bridge chair
L1_seat_top_halfwide:extended;
// L1 outer jaw (no ribs) ...
L1_outjaw_height_top:extended; // from base
L1_outjaw_height_edge:extended;
L1_outjaw_corner_rad_top:extended;
L1_outjaw_corner_rad_edge:extended;
// L1 top x-section...
L1_outjaw_half_width_top:extended;
L1_outjaw_depth_top:extended;
// L1 edge x-section ...
L1_outjaw_half_width_edge:extended;
L1_outjaw_depth_edge:extended;
//-------------------
// P switch slide chair
P_jaw_depth_top:extended;
P_jaw_depth_bot:extended;
P_jaw_half_width_top:extended;
P_jaw_half_width_mid:extended; // at bottom of spacer
P_seat_top_halfwide:extended;
// P inner
P_seat_table_radius:extended; // slide table width 7" /2
P_table_rad_centre_from_end:extended; // slide table rad centre 5.875" from chair end was 6"
//---------------------
// S1J joint chair
S1J_seat_top_halfwide:extended; // almost full width 9.7/8" /2
//---------------
// PLR switch block chairs
PLR1_seat_top_halfwide:extended; // allow angled insertion on chair 8" wide - 7.5" /2 1P and 2P chairs
PLR1_table_top_halfwide:extended; // slide table width 7" /2
PLR1_table_corner_radius:extended; // corners 1" rad
PLR1_table_rad_centres_from_gauge_face:extended; // slide table rad centre 1.5" from gauge face
//------------------------------
// SC outer jaw (1 rib, 2 bolts) ... Switch and Crossing chair outers
SC_outjaw_height_top:extended; // from base
// top x-section...
SC_outjaw_half_width_top:extended;
SC_outjaw_rib_rad_top:extended;
SC_outjaw_corner_rad_top:extended;
SC_outjaw_fillet_rad_top:extended;
SC_outjaw_depth_top:extended; // behind rib
SC_outjaw_rib_side_top:extended;
SC_outjaw_rib_end_top:extended;
// middle x-section ...
SC_outjaw_half_width_mid:extended;
SC_outjaw_height_mid:extended; // from base
SC_outjaw_rib_side_mid:extended;
SC_outjaw_rib_end_mid:extended;
SC_outjaw_rib_rad_mid:extended;
SC_outjaw_corner_rad_mid:extended;
SC_outjaw_fillet_rad_mid:extended;
SC_outjaw_depth_mid:extended; // behind rib
SC_outjaw_slope_mid:extended; // side slope 1:n from top
// seat x-section...
SC_outjaw_half_width_seat:extended;
SC_outjaw_rib_rad_seat:extended;
SC_outjaw_corner_rad_seat:extended;
SC_outjaw_fillet_rad_seat:extended;
SC_outjaw_rib_side_seat:extended;
SC_outjaw_rib_end_seat:extended;
SC_outjaw_depth_seat:extended; // behind ribs
SC_outjaw_slope_seat:extended; // side slope 1:n from middle
// plinth x-section ...
SC_outjaw_half_width_plinth:extended;
SC_outjaw_depth_plinth:extended; // behind rib
SC_outjaw_rib_rad_plinth:extended;
SC_outjaw_corner_rad_plinth:extended;
SC_outjaw_fillet_rad_plinth:extended;
SC_outjaw_rib_side_plinth:extended;
SC_outjaw_rib_end_plinth:extended;
SC_outjaw_slope_plinth:extended; // side slope 1:n from seat
//-------------------
end;//record T_3d_data
var
_2d_data:T_2d_data;
_3d_data:T_3d_data;
chair_frames:array of Tchair_frame; // 241a
chair_option_clicked:integer=2; // 239a init defaults - export pin slots
procedure init_2d_rea; // init default 2D chair data (called from templot_init)
procedure init_3d_rea; // init 3D data
//______________________________________________________________________________
implementation
{$R *.lfm}
uses
control_room, pad_unit, math_unit, keep_select, dxf_unit, alert_unit, bgkeeps_unit;
//______________________________________________________________________________
procedure init_2d_rea; // init default REA 2D chair data (called from templot_init)
begin
with _2d_data do begin
// length dims from gauge-face
S1_chair_outlong:=9.25; // Standard Railway Equipment 1926 S1 ordinary chairs
S1_chair_inlong:=5.25; // chair length 14.1/2"
S1_chair_halfwide:=4; // chair width 8" wide/2
S1_inbolt_1x:=0-2; // REA y always 1.75" in from end of chair
S1_inbolt_2x:=2;
S1_outbolt_1x:=0; // one outer screw/bolt on chair centre-line
S1_outbolt_2x:=0; // if 2nd bolt same as 1st bolt, it is omitted
S1_bolts_from_end:=1.75; // 1.75" on all REA chair screws
S1_chair_crad_inner:=1; // corner rad 1"
S1_chair_crad_outer:=1;
S1J_chair_outlong:=9.25; // Standard Railway Equipment 1926 S1J joint chairs
S1J_chair_inlong:=5.25; // chair length 14.1/2"
S1J_chair_halfwide:=5; // chair width 10" wide/2
S1J_inbolt_1x:=0-2; // REA y always 1.75" in from end of chair
S1J_inbolt_2x:=2;
S1J_outbolt_1x:=0; // one outer screw/bolt on chair centre-line
S1J_outbolt_2x:=0; // if 2nd bolt same as 1st bolt, it is omitted
S1J_bolts_from_end:=1.75; // 1.75" on all REA chair screws
S1J_chair_crad_inner:=1; // corner rad 1"
S1J_chair_crad_outer:=1;
L1_chair_outlong:=7; // Standard Railway Equipment 1926 L1 bridge chairs
L1_chair_inlong:=3.5; // chair length 10.1/2"
L1_chair_halfwide:=5.5; // chair width 11" /2
L1_chair_jaw_halfwide:=2; // chair jaw 4" /2
L1_inbolt_1x:=0-3.75; // REA always 1.75" in from end of chair
L1_inbolt_2x:=3.75;
L1_outbolt_1x:=0-3.75;
L1_outbolt_2x:=3.75;
L1_bolts_from_end:=1.75; // 1.75" on all REA chair screws
L1_chair_crad_inner:=1.75; // corner rad 1.75"
L1_chair_crad_outer:=1.75;
P_chair_outlong:=9.25; // same as S1
P_chair_inlong:=8.75; // P chair length 18" modified later (math_unit) for model switches:
P_chair_inlong_mod:=P_chair_inlong; // P_chair_inlong+(switch_opening-4.25)
P_chair_halfwide:=4; // chair width 8" wide/2
P_inbolt_1x:=0-2;
P_inbolt_2x:=2;
P_outbolt_1x:=0-2; // two outer bolts for P chair
P_outbolt_2x:=2;
P_bolts_from_end:=1.75; // 1.75" on all REA chair screws
P_chair_crad_inner:=1; // corner rad 1"
P_chair_crad_outer:=1;
// SC chairs ... fictional 4-bolt ordinary chairs
SC_chair_outlong:=9.25; // same as S1
SC_chair_inlong:=5.25; // chair length 14.1/2" samw as S1
SC_chair_halfwide:=4; // chair width 8" wide/2
SC_inbolt_1x:=0-2; // two inner bolts
SC_inbolt_2x:=2;
SC_outbolt_1x:=0-2; // two outer bolts
SC_outbolt_2x:=2;
SC_bolts_from_end:=1.75; // 1.75" on all REA chair screws
SC_chair_crad_inner:=1; // square corner in centre
SC_chair_crad_outer:=1; // outer corner rad 1"
// block chairs ...
// block slide chairs 1 & 2 (no inner jaw) ...