From a767c658cb603de9ec9f0577627b9b32cbf82b2b Mon Sep 17 00:00:00 2001
From: pacien
Date: Fri, 22 Dec 2017 01:53:55 +0100
Subject: Simplify and add geom. and matrix utility functions
Signed-off-by: pacien <pacien.trangirard@pacien.net>
---
src/common/geom.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
(limited to 'src/common/geom.c')
diff --git a/src/common/geom.c b/src/common/geom.c
index 7abb422..219270f 100644
--- a/src/common/geom.c
+++ b/src/common/geom.c
@@ -1,5 +1,24 @@
#include "common/geom.h"
+#include "morpher/matrix.h"
+
+CartesianMapping m(int x, int y) {
+ return (CartesianMapping) {{x, y},
+ {x, y}};
+}
+
+CartesianVector v(int x, int y) {
+ return (CartesianVector) {x, y};
+}
+
+bool mappings_equals(CartesianMapping m1, CartesianMapping m2) {
+ return vector_equals(m1.origin, m2.origin) && vector_equals(m1.target, m2.target);
+}
bool vector_equals(CartesianVector v1, CartesianVector v2) {
return v1.x == v2.x && v1.y == v2.y;
}
+
+IntVector triangle_area(CartesianVector v1, CartesianVector v2, CartesianVector v3) {
+ return matrix_int_det2(v1.x - v3.x, v2.x - v3.x,
+ v1.y - v3.y, v2.y - v3.y);
+}
--
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