From 38a71a0e8eb25418f6a0be23960a30de566dfb7c Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Sun, 8 Jan 2023 22:35:38 -0600
Subject: add kai_parse_float_array

---
 include/kalmia.h             | 62 ++++++++++++++++++++++++++++++++++++++++++++
 src/CMakeLists.txt           |  1 +
 src/geometry/CMakeLists.txt  | 10 +++++++
 src/geometry/geometry.c      | 29 +++++++++++++++++++++
 src/geometry/geometry.h      |  9 +++++++
 src/geometry/geometry.test.c | 42 ++++++++++++++++++++++++++++++
 src/test/test.h              |  1 +
 7 files changed, 154 insertions(+)
 create mode 100644 src/geometry/CMakeLists.txt
 create mode 100644 src/geometry/geometry.c
 create mode 100644 src/geometry/geometry.h
 create mode 100644 src/geometry/geometry.test.c

diff --git a/include/kalmia.h b/include/kalmia.h
index 20e5f4f..524072b 100644
--- a/include/kalmia.h
+++ b/include/kalmia.h
@@ -63,6 +63,68 @@ typedef float ka_real_t;
 #endif
 
 
+/**************** geometry types ****************/
+
+struct ka_float_array_t {
+	char *id;
+	size_t count;
+	ka_real_t *data;
+};
+
+
+struct ka_param_t {
+	char *name;
+	char *type;
+};
+
+
+struct ka_accessor_t {
+	size_t count;
+	size_t offset;
+	char *source;
+	size_t stride;
+
+	struct ka_param_t *param;
+	size_t             param_count;
+};
+
+
+struct ka_technique_common_t {
+	struct ka_accessor_t accessor;
+};
+
+
+struct ka_source_t {
+	char *id;
+	struct ka_float_array_t float_array;
+	struct ka_technique_common_t technique_common;
+};
+
+
+struct ka_vertices_t {
+};
+
+
+struct ka_triangles_t {
+};
+
+
+struct ka_mesh_t {
+	struct ka_source_t *source;
+	size_t              source_count;
+
+	struct ka_vertices_t vertices;
+
+	struct ka_triangles_t *triangles;
+	size_t                 triangles_count;
+};
+
+
+struct ka_geometry_t {
+	struct ka_mesh_t mesh;
+};
+
+
 typedef ka_real_t ka_matrix_t[16];
 
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index bb8aa82..d0589ed 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -11,3 +11,4 @@ if (KALMIA_BUILD_TESTS)
 endif()
 
 add_subdirectory(util)
+add_subdirectory(geometry)
diff --git a/src/geometry/CMakeLists.txt b/src/geometry/CMakeLists.txt
new file mode 100644
index 0000000..006fc27
--- /dev/null
+++ b/src/geometry/CMakeLists.txt
@@ -0,0 +1,10 @@
+project(kalmia)
+
+target_sources(kalmia PUBLIC geometry.c)
+
+if (KALMIA_BUILD_TESTS)
+	target_sources(
+		kalmia-tests PUBLIC
+		geometry.test.c
+	)
+endif()
diff --git a/src/geometry/geometry.c b/src/geometry/geometry.c
new file mode 100644
index 0000000..1d26a70
--- /dev/null
+++ b/src/geometry/geometry.c
@@ -0,0 +1,29 @@
+#include <string.h>
+
+#include <kalmia.h>
+#include <ezxml.h>
+#include "util/util.h"
+#include "geometry.h"
+
+
+void kai_parse_float_array(struct ka_float_array_t *dest, ezxml_t src)
+{
+	/* get id, if present */
+	const char *id = ezxml_attr(src, "id");
+	if (id != NULL) {
+		size_t id_len = strlen(id) + 1;
+		dest->id = malloc(sizeof(char) * id_len);
+		strncpy(dest->id, id, id_len);
+	}
+	else {
+		dest->id = NULL;
+	}
+
+	/* get count */
+	const char *count = ezxml_attr(src, "count");
+	dest->count = strtol(count, NULL, 10);
+
+	/* parse floats */
+	dest->data = malloc(sizeof(ka_real_t) * dest->count);
+	kai_text_to_reals(dest->data, ezxml_txt(src), dest->count);
+}
diff --git a/src/geometry/geometry.h b/src/geometry/geometry.h
new file mode 100644
index 0000000..7da5c3d
--- /dev/null
+++ b/src/geometry/geometry.h
@@ -0,0 +1,9 @@
+#ifndef KALMIA_GEOMETRY_H
+#define KALMIA_GEOMETRY_H
+
+#include <kalmia.h>
+#include <ezxml.h>
+
+void kai_parse_float_array(struct ka_float_array_t *dest, ezxml_t src);
+
+#endif
diff --git a/src/geometry/geometry.test.c b/src/geometry/geometry.test.c
new file mode 100644
index 0000000..bb06aeb
--- /dev/null
+++ b/src/geometry/geometry.test.c
@@ -0,0 +1,42 @@
+#include <string.h>
+
+#include <kalmia.h>
+#include <ezxml.h>
+#include "geometry.h"
+#include "test/test.h"
+
+
+LILY_FILE_BEGIN(geometry_suite)
+
+
+LILY_TEST("parse float array")
+{
+	char str[1024];
+	strncpy(
+		str,
+		"<float_array id=\"sequence\" count=\"5\">\n"
+		"	-0.5 -0.25 0 0.25 0.5\n"
+		"</float_array>",
+		1024
+	);
+
+	ezxml_t tag = ezxml_parse_str(str, strlen(str)+1);
+
+	struct ka_float_array_t float_array;
+	kai_parse_float_array(&float_array, tag);
+
+	CHECK_EQS(float_array.id, "sequence");
+	REQUIRE_EQ(float_array.count, 5, "%ul");
+	REQUIRE_NEQ(float_array.data, NULL, "%p");
+
+	CHECK_EQ(float_array.data[0], -0.50, "%f");
+	CHECK_EQ(float_array.data[1], -0.25, "%f");
+	CHECK_EQ(float_array.data[2],  0.00, "%f");
+	CHECK_EQ(float_array.data[3],  0.25, "%f");
+	CHECK_EQ(float_array.data[4],  0.50, "%f");
+}
+#include LILY_PUSH_TEST()
+
+
+#define LILY_FILE_END
+#include LILY_REGISTER_TESTS()
diff --git a/src/test/test.h b/src/test/test.h
index f8d07c9..910fe65 100644
--- a/src/test/test.h
+++ b/src/test/test.h
@@ -7,6 +7,7 @@
 
 #define TESTS \
 	X(util_suite) \
+	X(geometry_suite) \
 
 
 #define X(test) extern void (*test)();
-- 
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