Merge pull request #10 from dcoeurjo/externaldata

Externaldata enabled

Author: dcoeurjo

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 2.8)
 cmake_policy(SET CMP0015 OLD)
-list(APPEND CMAKE_MODULE_PATH "modules")
+list(APPEND CMAKE_MODULE_PATH "cmake")
 
 ##### BUILD ############################################################
 project(sampler)
@@ -28,6 +28,34 @@ link_directories(
 	${OPENGL_LIBRARY_DIRS}
 )
 
+
+
+######## External Data for production/barycenter/lut files######
+##
+## Data files will be located in the {build-folder}/data/lut/
+## 
+include(ExternalData)
+list(APPEND ExternalData_URL_TEMPLATES
+  "http://liris.cnrs.fr/polyhex/data/%(algo)-%(hash)")
+ExternalData_Expand_Arguments(
+  GetData
+  OUT-data 
+  DATA{data/lut/production_rules.dat}
+  DATA{data/lut/barycenters.dat}
+  )
+MESSAGE(STATUS "PATH to the data files: ${OUT-data}")
+ExternalData_Add_Target(GetData)
+ExternalData_Expand_Arguments(
+  GetLUT
+  OUT-LUT 
+  DATA{data/lut/offsets_bnot.dat}
+  )
+MESSAGE(STATUS "PATH to the LUT file: ${OUT-LUT}")
+ExternalData_Add_Target(GetLUT)
+set_target_properties(GetLUT PROPERTIES EXCLUDE_FROM_ALL "TRUE")
+##########"
+
+
 file(GLOB sampler-core-src ${PROJECT_SOURCE_DIR}/src/*.cpp )
 file(GLOB sampler-gui-src ${PROJECT_SOURCE_DIR}/src/gui/*.cpp )
 file(GLOB sampler-gui-hdr ${PROJECT_SOURCE_DIR}/src/gui/*.hpp )

README.md

@@ -40,6 +40,8 @@ Data
 This program needs full offsets table to produce best sampling distribution.
 These tables are heavy (1.5G) and can be downloaded here: http://liris.cnrs.fr/polyhex/data/
 
+Aternatively, `make GetLUT` (GetLUT target in your IDE) will download the data file to the folder `{your-build-folder}/data/lut`.
+
 
 Usage examples
 --------------

cmake/ExternalData.cmake

@@ -0,0 +1,4 @@
+set(ExternalData_OBJECT_STORES "@ExternalData_OBJECT_STORES@")
+set(ExternalData_URL_TEMPLATES "@ExternalData_URL_TEMPLATES@")
+set(ExternalData_TIMEOUT_INACTIVITY "@ExternalData_TIMEOUT_INACTIVITY@")
+set(ExternalData_TIMEOUT_ABSOLUTE "@ExternalData_TIMEOUT_ABSOLUTE@")