moving trunk for module inkscape

(bzr r1)

1 files changed, 71 insertions, 0 deletions

diff --git a/src/libnr/nr-macros.h b/src/libnr/nr-macros.h
new file mode 100644
index 000000000..74a627ae7
--- /dev/null
+++ b/src/libnr/nr-macros.h
@@ -0,0 +1,71 @@
+#ifndef __NR_MACROS_H__
+#define __NR_MACROS_H__
+
+/*
+ * Pixel buffer rendering library
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * This code is in public domain
+ */
+
+#include <math.h>
+
+#if HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include <assert.h>
+
+#define nr_new(t,n) ((t *) malloc ((n) * sizeof (t)))
+#define nr_free free
+#define nr_renew(p,t,n) ((t *) realloc (p, (n) * sizeof (t)))
+
+#ifndef TRUE
+#define TRUE (!0)
+#endif
+#ifndef FALSE
+#define FALSE 0
+#endif
+#ifndef MAX
+#define MAX(a,b) (((a) < (b)) ? (b) : (a))
+#endif
+#ifndef MIN
+#define MIN(a,b) (((a) > (b)) ? (b) : (a))
+#endif
+
+#ifndef CLAMP
+/** Returns v bounded to within [a, b].  If v is NaN then returns a. 
+ *
+ *  \pre \a a \<= \a b.
+ */
+# define CLAMP(v,a,b)	\
+	(assert (a <= b),	\
+	 ((v) >= (a))	\
+	 ? (((v) > (b))	\
+	    ? (b)	\
+	    : (v))	\
+	 : (a))
+#endif
+
+#define NR_DF_TEST_CLOSE(a,b,e) (fabs ((a) - (b)) <= (e))
+
+// Todo: move these into nr-matrix.h
+#define NR_MATRIX_DF_TEST_TRANSFORM_CLOSE(a,b,e) (NR_DF_TEST_CLOSE ((*(a))[0], (*(b))[0], e) && \
+				        NR_DF_TEST_CLOSE ((*(a))[1], (*(b))[1], e) && \
+					NR_DF_TEST_CLOSE ((*(a))[2], (*(b))[2], e) && \
+					NR_DF_TEST_CLOSE ((*(a))[3], (*(b))[3], e))
+#define NR_MATRIX_DF_TEST_TRANSLATE_CLOSE(a,b,e) (NR_DF_TEST_CLOSE ((*(a))[4], (*(b))[4], e) && \
+					NR_DF_TEST_CLOSE ((*(a))[5], (*(b))[5], e))
+#define NR_MATRIX_DF_TEST_CLOSE(a,b,e) (NR_MATRIX_DF_TEST_TRANSLATE_CLOSE (a, b, e) && \
+					NR_MATRIX_DF_TEST_TRANSFORM_CLOSE (a, b, e))
+
+#define NR_RECT_DFLS_TEST_EMPTY(a) (((a)->x0 >= (a)->x1) || ((a)->y0 >= (a)->y1))
+#define NR_RECT_DFLS_TEST_INTERSECT(a,b) (((a)->x0 < (b)->x1) && ((a)->x1 > (b)->x0) && ((a)->y0 < (b)->y1) && ((a)->y1 > (b)->y0))
+#define NR_RECT_DF_POINT_DF_TEST_INSIDE(r,p) (((p)->x >= (r)->x0) && ((p)->x < (r)->x1) && ((p)->y >= (r)->y0) && ((p)->y < (r)->y1))
+#define NR_RECT_LS_POINT_LS_TEST_INSIDE(r,p) (((p)->x >= (r)->x0) && ((p)->x < (r)->x1) && ((p)->y >= (r)->y0) && ((p)->y < (r)->y1))
+
+#define NR_MATRIX_D_TO_DOUBLE(m) ((m)->c)
+#define NR_MATRIX_D_FROM_DOUBLE(d) ((NRMatrix *) &(d)[0])
+
+#endif