[sql] Import reference version of SQLite 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/test/show_speedtest1_rtree.tcl

+#!/usr/bin/tclsh
+#
+# This script displays the field of rectangles used by --testset rtree
+# of speedtest1.  Run this script as follows:
+#
+#      rm test.db
+#      ./speedtest1 --testset rtree --size 25 test.db
+#      sqlite3 --separator ' ' test.db 'SELECT * FROM rt1' >data.txt
+#      wish show_speedtest1_rtree.tcl
+#
+# The filename "data.txt" is hard coded into this script and so that name
+# must be used on lines 3 and 4 above.  Elsewhere, different filenames can
+# be used.  The --size N parameter can be adjusted as desired.
+#
+package require Tk
+set f [open data.txt rb]
+set data [read $f]
+close $f
+canvas .c
+frame .b
+button .b.b1 -text X-Y -command refill-xy
+button .b.b2 -text X-Z -command refill-xz
+button .b.b3 -text Y-Z -command refill-yz
+pack .b.b1 .b.b2 .b.b3 -side left
+pack .c -side top -fill both -expand 1
+pack .b -side top
+proc resize_canvas_to_fit {} {
+  foreach {x0 y0 x1 y1} [.c bbox all] break
+  set w [expr {$x1-$x0}]
+  set h [expr {$y1-$y0}]
+  .c config -width $w -height $h
+}
+proc refill-xy {} {
+  .c delete all
+  foreach {id x0 x1 y0 y1 z0 z1} $::data {
+    .c create rectangle $x0 $y0 $x1 $y1
+  }
+  .c scale all 0 0 0.05 0.05
+  resize_canvas_to_fit
+}
+proc refill-xz {} {
+  .c delete all
+  foreach {id x0 x1 y0 y1 z0 z1} $::data {
+    .c create rectangle $x0 $z0 $x1 $z1
+  }
+  .c scale all 0 0 0.05 0.05
+  resize_canvas_to_fit
+}
+proc refill-yz {} {
+  .c delete all
+  foreach {id x0 x1 y0 y1 z0 z1} $::data {
+    .c create rectangle $y0 $z0 $y1 $z1
+  }
+  .c scale all 0 0 0.05 0.05
+  resize_canvas_to_fit
+}
+refill-xy