add vector.h

2 files changed, 87 insertions, 0 deletions

diff --git a/vector.c b/vector.c
new file mode 100644
index 0000000..846b361
--- /dev/null
+++ b/vector.c
@@ -0,0 +1,57 @@
+#include <stdlib.h>
+#include "vector.h"
+vector_t init_vector(int mx, int my) {
+	vector_t vector;
+	vector.mx = mx;
+	vector.my = my;
+	return vector;
+}
+vectorp_t init_vectorp(vector_t* vectors, int length) {
+	vectorp_t vectorP;
+	vectorP.vectors = vectors;
+	vectorP.length = length;
+	return vectorP;
+}
+bool vector_equals(vector_t v1, vector_t v2) {
+	return v1.mx == v2.mx && v1.my == v2.my;
+}
+vector_t vector_add(vector_t v1, vector_t v2) {
+	return init_vector(v1.mx + v2.mx, v1.my + v2.my);
+}
+vector_t vector_sub(vector_t v1, vector_t v2) {
+	return init_vector(v1.mx - v2.mx, v1.my - v2.my);
+}
+vectorp_t remove_vector(vectorp_t vectorp, int index) {
+	vector_t* vectors = malloc((vectorp.length - 1) * sizeof(vector_t));
+	for(int i = 0; i < vectorp.length - 1; i++) {
+		int correctedIndex = i > index ? i - 1 : i;
+		if(i != index) {
+			vectors[correctedIndex] = vectorp.vectors[i];
+		}
+	}
+	return init_vectorp(vectors, vectorp.length - 1);
+}
+vectorp_t remove_vectors(vectorp_t vectorp, int* indexes, int indexCount) {
+	vector_t* vectors = malloc((vectorp.length - indexCount) * sizeof(vector_t));
+	int correctedIndex = 0;
+	for(int i = 0; i < vectorp.length - indexCount; i++) {
+		int toRemove = 0;
+		for(int j = 0; j < indexCount; j++) {
+			if(i == indexes[j]) {
+				toRemove = 1;
+				break;
+			}
+		}
+		if(!toRemove) {
+			vectors[correctedIndex] = vectorp.vectors[i];
+			correctedIndex++;
+		}
+	}
+	return init_vectorp(vectors, vectorp.length - indexCount);
+}
+vectorpp_t init_vectorpp(vectorp_t* vectorps, int length) {
+	vectorpp_t vectorPP;
+	vectorPP.vectorps = vectorps;
+	vectorPP.length = length;
+	return vectorPP;
+}
diff --git a/vector.h b/vector.h
new file mode 100644
index 0000000..b4558a1
--- /dev/null
+++ b/vector.h
@@ -0,0 +1,30 @@
+#ifndef VECTOR
+#define VECTOR
+typedef struct Vector {
+	int mx;
+	int my;	
+} vector_t;
+
+vector_t init_vector(int mx, int my);
+bool vector_equals(vector_t v1, vector_t v2);
+vector_t vector_add(vector_t v1, vector_t v2);
+vector_t vector_sub(vector_t v1, vector_t v2);
+
+typedef struct VectorP {
+	vector_t* vectors;
+	int length;
+} vectorp_t;
+
+vectorp_t init_vectorp(vector_t* vectors, int length);
+
+/* removes a vector from vectorp */
+vectorp_t remove_vector(vectorp_t vectorp, int index);
+vectorp_t remove_vectors(vectorp_t vectorp, int* indexes, int indexCount);
+typedef struct VectorPP {
+	vectorp_t* vectorps;
+	int length;
+} vectorpp_t;
+
+vectorpp_t init_vectorpp(vectorp_t* vectorps, int length);
+
+#endif