Initial commit, extension framework, dumb headers,

BSD license.

COPYRIGHT

@@ -0,0 +1,30 @@
+Copyright (c) 2012, OpenGeo
+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 the name of the OpenGeo nor the names of its 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 COPYRIGHT HOLDER 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.
+

Makefile

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+# pointcloud
+
+MODULE_big = pointcloud
+OBJS= pc_core.o
+
+EXTENSION = pointcloud
+DATA = pointcloud--1.0.sql
+
+REGRESS = pointcloud
+
+SHLIB_LINK += $(filter -lm, $(LIBS))
+
+# We are going to use PGXS for sure
+PG_CONFIG = pg_config
+PGXS := $(shell $(PG_CONFIG) --pgxs)
+include $(PGXS)
+

README.md

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-pointcloud
-==========
+Point Cloud
+===========
+
+A PostgreSQL extension for storing point cloud (LIDAR) data.
+
+Requires
+========
+
+- PostgreSQL 9.1+ (support for extensions)
+- PostgreSQL compiled --with-xml
 
-A PostgreSQL extension for storing point cloud (LIDAR) data.

pc_core.c

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+/***********************************************************************
+* pc_core.c
+* 
+*        Core routines for point clouds
+*
+* Portions Copyright (c) 2012, OpenGeo
+*
+***********************************************************************/
+
+#include "pc_core.h"

pc_core.h

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+/***********************************************************************
+* pc_core.h
+* 
+*        Structures and function signatures for point clouds
+*
+* Portions Copyright (c) 2012, OpenGeo
+*
+***********************************************************************/
+
+/* PostgreSQL types and functions */
+#include "postgres.h"
+
+/**
+* Point type for clouds. Variable length, because there can be 
+* an arbitrary number of dimensions. The pcid is a foreign key 
+* reference to the POINTCLOUD_REFERENCE_SYSTEMS table, where
+* the underlying structure of the data is described in XML, 
+* the spatial reference system is indicated, and the data
+* packing scheme is indicated.
+*/
+typedef struct 
+{
+	uint32 size; /* PgSQL VARSIZE */
+	uint16 pcid;
+	uint8 data[1];
+} PCPOINT;
+
+
+/**
+* Generic patch type (collection of points) for clouds. 
+* Variable length, because there can be 
+* an arbitrary number of points encoded within.
+* The pcid is a foriegn key reference to the 
+* POINTCLOUD_REFERENCE_SYSTEMS table, where
+* the underlying structure of the data is described in XML, 
+* the spatial reference system is indicated, and the data
+* packing scheme is indicated.
+*/
+typedef struct 
+{
+	uint32 size; /* PgSQL VARSIZE */
+	uint16 pcid;
+	uint32 npoints;
+	uint8 data[1];
+} PCPATCH;
+

pointcloud--1.0.sql

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+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION pointcloud" to load this file. \quit
+
+-- We need this for every point cloud, so we won't bury it in the XML
+CREATE DOMAIN pointcloud_compression AS TEXT
+CHECK (
+    VALUE = 'GHT' OR
+    VALUE = 'NONE'
+);
+
+
+-- Metadata table describing contents of pcpoints
+CREATE TABLE pointcloud_formats (
+    pcid INTEGER PRIMARY KEY,
+    srid INTEGER, -- REFERENCE spatial_ref_sys(srid)
+    compression pointcloud_compression,
+    format XML
+);
+-- Register pointcloud_formats table so the contents are included in pg_dump output
+SELECT pg_catalog.pg_extension_config_dump('pointcloud_formats', '');

pointcloud.control

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+# pointcloud extension
+comment = 'data type for lidar point clouds'
+default_version = '1.0'
+module_pathname = '$libdir/pointcloud'
+relocatable = true
+superuser = true
+#requires = 'postgis'