From e63924eb707d92cf705ebbd94a349926836add80 Mon Sep 17 00:00:00 2001
From: "Valeriano A.R" <valen.alfonso@protonmail.com>
Date: Sun, 3 Oct 2021 14:18:17 +0200
Subject: [PATCH] Util: Rect structure

---
 src/Util.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++-
 src/Util.h | 27 ++++++++++++++++++++++++++-
 2 files changed, 72 insertions(+), 2 deletions(-)

diff --git a/src/Util.c b/src/Util.c
index 9abfcb3..1c9b98b 100644
--- a/src/Util.c
+++ b/src/Util.c
@@ -1,4 +1,4 @@
-// Copyright (C) 2011 Valeriano Alfonso Rodriguez (Kableado)
+// Copyright (C) 2011-2021 Valeriano Alfonso Rodriguez (Kableado)
 
 #include <math.h>
 #include <stdio.h>
@@ -8,8 +8,53 @@
 
 #include "Util.h"
 
+/////////////////////////////
+// Misc
+//
+
 float CosineInterpolation(float f) { return (1.0f - cos(f * Pi)) * 0.5f; }
 
+int MinimumInt(int i0, int i1) {
+	if (i1 < i0) {
+		return i1;
+	}
+	return i0;
+}
+
+int MaximumInt(int i0, int i1) {
+	if (i1 > i0) {
+		return i1;
+	}
+	return i0;
+}
+
+/////////////////////////////
+// Rect
+//
+
+int Rect_UnionRect(Rect r0, Rect r1, Rect rd) {
+	rd->x0 = MinimumInt(r0->x0, r1->x0);
+	rd->y0 = MinimumInt(r0->y0, r1->y0);
+	rd->x1 = MaximumInt(r0->x1, r1->x1);
+	rd->y1 = MaximumInt(r0->y1, r1->y1);
+}
+
+int Rect_PointInside(Rect r, int x, int y) {
+	return (x >= r->x0 && x < r->x1 && y >= r->y0 && y < r->y1);
+}
+
+int Rect_PointInsideAny(TRect r[], int rCount, int x, int y) {
+	int insideAny = 0;
+	int i;
+	for (i = 0; i < rCount; i++) {
+		if (Rect_PointInside(&(r[i]), x, y)) {
+			insideAny = 1;
+			break;
+		}
+	}
+	return insideAny;
+}
+
 /////////////////////////////
 // SolveQuadratic
 //
diff --git a/src/Util.h b/src/Util.h
index f084b48..3b3ce7f 100644
--- a/src/Util.h
+++ b/src/Util.h
@@ -1,4 +1,4 @@
-// Copyright (C) 2011 Valeriano Alfonso Rodriguez (Kableado)
+// Copyright (C) 2011-2021 Valeriano Alfonso Rodriguez (Kableado)
 
 #ifndef _UTIL_H_
 #define _UTIL_H_
@@ -8,8 +8,32 @@
 
 #define Pi (3.1415925f)
 
+/////////////////////////////
+// Misc
+//
+
 float CosineInterpolation(float f);
 
+int MinimumInt(int i0, int i1);
+
+int MaximumInt(int i0, int i1);
+
+/////////////////////////////
+// Rect
+//
+
+typedef struct SRect TRect, *Rect;
+struct SRect {
+	int x0;
+	int y0;
+	int x1;
+	int y1;
+};
+
+int Rect_UnionRect(Rect r0, Rect r1, Rect rd);
+int Rect_PointInside(Rect r, int x, int y);
+int Rect_PointInsideAny(TRect r[], int rCount, int x, int y);
+
 /////////////////////////////
 // SolveQuadratic
 //
@@ -90,6 +114,7 @@ int EndsWith(char *str, char *suffix);
 /////////////////////////////
 // Rand
 //
+
 void Rand_Seed(unsigned seed);
 
 unsigned Rand_Get();