chore: import upstream snapshot with attribution

2026-07-13 12:25:07 +08:00
commit a26e856398
1681 changed files with 296950 additions and 0 deletions
@@ -0,0 +1,76 @@
+cmake_minimum_required(VERSION 3.7.2)
+
+#   Program:   Visualization Toolkit
+#   Module:    Copyright.txt
+
+# Copyright (c) 1993-2015 Ken Martin, Will Schroeder, Bill Lorensen
+# All rights reserved.
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+
+#  * Redistributions of source code must retain the above copyright notice,
+#    this list of conditions and the following disclaimer.
+
+#  * Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+
+#  * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
+#    of any contributors may be used to endorse or promote products derived
+#    from this software without specific prior written permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# - Try to find ExprTk lib
+#
+# This module supports requiring a minimum version, e.g. you can do
+#   find_package(ExprTk 2.71828)
+# to require version 2.71828 or newer of ExprTk.
+#
+# Once done this will define
+#
+#  ExprTk_FOUND - system has eigen lib with correct version
+#  ExprTk_INCLUDE_DIRS - the eigen include directory
+#  ExprTk_VERSION - eigen version
+#
+# And the following imported target:
+#
+#  ExprTk::ExprTk
+
+find_path(ExprTk_INCLUDE_DIR
+  NAMES exprtk.hpp
+  DOC "Path to ExprTk header")
+mark_as_advanced(ExprTk_INCLUDE_DIR)
+
+if (ExprTk_INCLUDE_DIR)
+  file(STRINGS "${ExprTk_INCLUDE_DIR}/exprtk.hpp" _exprtk_version_header
+    REGEX "static \\* version")
+  string(REGEX MATCH "static \\* version = \"([0-9.]+)\"" _exprtk_version_match "${_exprtk_version_header}")
+  set(ExprTk_VERSION "${CMAKE_MATCH_1}")
+  unset(_exprtk_version_header)
+  unset(_exprtk_version_match)
+endif ()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(ExprTk
+  REQUIRED_VARS ExprTk_INCLUDE_DIR
+  VERSION_VAR ExprTk_VERSION)
+
+if (ExprTk_FOUND)
+  set(ExprTk_INCLUDE_DIRS "${ExprTk_INCLUDE_DIR}")
+  if (NOT TARGET ExprTk::ExprTk)
+    add_library(ExprTk::ExprTk INTERFACE IMPORTED)
+    set_target_properties(ExprTk::ExprTk PROPERTIES
+      INTERFACE_INCLUDE_DIRECTORIES "${ExprTk_INCLUDE_DIR}")
+  endif ()
+endif ()