Initial commit. For older history, see project ben-scans.

http://projects.qi-hardware.com/index.php/p/ben-scans/

solidify/array.h

@@ -0,0 +1,52 @@
+/*
+ * array.h - Growable baseless 2D array
+ *
+ * Written 2010 by Werner Almesberger
+ * Copyright 2010 by Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef ARRAY_H
+#define ARRAY_H
+
+#include <limits.h>
+
+
+#define	UNDEF	INT_MAX
+
+
+struct array {
+	int min_x, max_x;
+	int min_y, max_y;
+	int min_z, max_z;
+	int *data;	/* NULL if there are no points */
+};
+
+
+struct array *new_array(void);
+void free_array(struct array *a);
+
+void set(struct array *a, int x, int y, int z);
+
+
+static inline int get(const struct array *a, int x, int y)
+{
+	return a->data[(x)-a->min_x+(a->max_x-a->min_x+1)*((y)-a->min_y)];
+}
+
+
+static inline int get_bounded(const struct array *a, int x, int y)
+{
+	if (x < a->min_x || x > a->max_x)
+		return UNDEF;
+	if (y < a->min_y || y > a->max_y)
+		return UNDEF;
+	return get(a, x, y);
+}
+
+
+#endif /* !ARRAY_H */