Revision: 73942
http://sourceforge.net/p/brlcad/code/73942
Author: brlcad
Date: 2019-09-17 07:40:34 +0000 (Tue, 17 Sep 2019)
Log Message:
-----------
implement the first half, rt_texture_load(). need to refactor source and
eliminate logging.
Modified Paths:
--------------
brlcad/trunk/src/librt/CMakeLists.txt
Added Paths:
-----------
brlcad/trunk/src/librt/uv.c
Modified: brlcad/trunk/src/librt/CMakeLists.txt
===================================================================
--- brlcad/trunk/src/librt/CMakeLists.txt 2019-09-17 01:03:56 UTC (rev
73941)
+++ brlcad/trunk/src/librt/CMakeLists.txt 2019-09-17 07:40:34 UTC (rev
73942)
@@ -220,6 +220,7 @@
tol.c
transform.c
tree.c
+ uv.c
vers.c
vlist.c
vshoot.c
Added: brlcad/trunk/src/librt/uv.c
===================================================================
--- brlcad/trunk/src/librt/uv.c (rev 0)
+++ brlcad/trunk/src/librt/uv.c 2019-09-17 07:40:34 UTC (rev 73942)
@@ -0,0 +1,128 @@
+/* U V . C
+ * BRL-CAD
+ *
+ * Copyright (c) 2019 United States Government as represented by
+ * the U.S. Army Research Laboratory.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * version 2.1 as published by the Free Software Foundation.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this file; see the file named COPYING for more
+ * information.
+ */
+/** @file uv.c
+ *
+ * Implementation of UV texture mapping support.
+ *
+ */
+
+#include "common.h"
+
+#include "rt/db_internal.h"
+#include "rt/db_io.h"
+#include "rt/nongeom.h"
+#include "rt/uv.h"
+
+
+int
+rt_texture_load(struct rt_texture *texture, const char *name, struct db_i
*dbip)
+{
+ struct directory *dirEntry;
+ size_t size = 1234; /* !!! fixme */
+
+ RT_CK_DBI(dbip);
+
+ if (!name || !texture)
+ return 0;
+
+ bu_log("Loading texture %s [%s]...",
texture->tx_datasrc==TXT_SRC_AUTO?"from auto-determined
datasource":texture->tx_datasrc==TXT_SRC_OBJECT?"from a database
object":texture->tx_datasrc==TXT_SRC_FILE?"from a file":"from an unknown source
(ERROR)", bu_vls_addr(&texture->tx_name));
+
+ /* if the source is auto or object, we try to load the object */
+ if ((texture->tx_datasrc==TXT_SRC_AUTO) ||
(texture->tx_datasrc==TXT_SRC_OBJECT)) {
+
+ /* see if the object exists */
+ if ((dirEntry=db_lookup(dbip, bu_vls_addr(&texture->tx_name),
LOOKUP_QUIET)) == RT_DIR_NULL) {
+
+ /* unable to find the texture object */
+ if (texture->tx_datasrc!=TXT_SRC_AUTO) {
+ return -1;
+ }
+ } else {
+ struct rt_db_internal *dbip2;
+
+ BU_ALLOC(dbip2, struct rt_db_internal);
+
+ RT_DB_INTERNAL_INIT(dbip2);
+ RT_CK_DB_INTERNAL(dbip2);
+ RT_CK_DIR(dirEntry);
+
+ /* the object was in the directory, so go get it */
+ if (rt_db_get_internal(dbip2, dirEntry, dbip, NULL, NULL) <= 0) {
+ /* unable to load/create the texture database record object */
+ return -1;
+ }
+
+ RT_CK_DB_INTERNAL(dbip2);
+ RT_CK_BINUNIF(dbip2->idb_ptr);
+
+ /* keep the binary object pointer */
+ texture->tx_binunifp = (struct rt_binunif_internal
*)dbip2->idb_ptr; /* make it so */
+
+ /* release the database instance pointer struct we created */
+ RT_DB_INTERNAL_INIT(dbip2);
+ bu_free(dbip2, "txt_load_datasource");
+
+ /* check size of object */
+ if (texture->tx_binunifp->count < size) {
+ bu_log("\nWARNING: %s needs %zu bytes, binary object only has
%zu\n", bu_vls_addr(&texture->tx_name), size, texture->tx_binunifp->count);
+ } else if (texture->tx_binunifp->count > size) {
+ bu_log("\nWARNING: Binary object is larger than specified
texture size\n"
+ "\tBinary Object: %zu pixels\n\tSpecified Texture Size:
%zu pixels\n"
+ "...continuing to load using image subsection...",
+ texture->tx_binunifp->count, size);
+ }
+ }
+ }
+
+ /* if we are auto and we couldn't find a database object match, or
+ * if source is explicitly a file then we load the file.
+ */
+ if (((texture->tx_datasrc==TXT_SRC_AUTO) && (texture->tx_binunifp==NULL))
|| (texture->tx_datasrc==TXT_SRC_FILE)) {
+
+ texture->tx_mp = bu_open_mapped_file_with_path(dbip->dbi_filepath,
bu_vls_addr(&texture->tx_name), NULL);
+
+ if (texture->tx_mp==NULL)
+ return -1; /* FAIL */
+
+ if (texture->tx_mp->buflen < size) {
+ bu_log("\nWARNING: %s needs %zu bytes, file only has %zu\n",
bu_vls_addr(&texture->tx_name), size, texture->tx_mp->buflen);
+ } else if (texture->tx_mp->buflen > size) {
+ bu_log("\nWARNING: Texture file size is larger than specified
texture size\n"
+ "\tInput File: %zu pixels\n\tSpecified Texture Size: %zu
pixels\n"
+ "...continuing to load using image subsection...",
+ texture->tx_mp->buflen, size);
+ }
+ }
+
+ bu_log("done.\n");
+
+ return 0;
+}
+
+
+/*
+ * Local Variables:
+ * tab-width: 8
+ * mode: C
+ * indent-tabs-mode: t
+ * c-file-style: "stroustrup"
+ * End:
+ * ex: shiftwidth=4 tabstop=8
+ */
Property changes on: brlcad/trunk/src/librt/uv.c
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
\ No newline at end of property
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