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Added expand_to to Rect2.

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Relintai 2021-11-16 03:06:58 +01:00
parent f50f52e593
commit e74549776f
2 changed files with 41 additions and 10 deletions
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47
core/math/rect2.cpp
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@ -83,6 +83,33 @@ void Rect2::shrink(const float by) {
w -= by;
}
//Taken from the Godot Engine (MIT License)
//Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.
//Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).
void Rect2::expand_to(const Vector2 &p_vector) {
Vector2 begin = Vector2(x, y);
Vector2 end = Vector2(x, y) + Vector2(w, h);
if (p_vector.x < begin.x) {
begin.x = p_vector.x;
}
if (p_vector.y < begin.y) {
begin.y = p_vector.y;
}
if (p_vector.x > end.x) {
end.x = p_vector.x;
}
if (p_vector.y > end.y) {
end.y = p_vector.y;
}
x = begin.x;
y = begin.y;
w = end.x - begin.x;
h = end.y - begin.y;
}
#ifdef SDL_AVAILABLE
SDL_Rect Rect2::as_rect() const {
SDL_Rect r;
@ -108,47 +135,47 @@ SDL_FRect Rect2::as_frect() const {
#endif
Rect2 &Rect2::operator+=(const Rect2 &b) {
x += b.x;
x += b.x;
y += b.y;
w += b.w;
h += b.h;
return *this;
return *this;
}
Rect2 &Rect2::operator-=(const Rect2 &b) {
x -= b.x;
x -= b.x;
y -= b.y;
w -= b.w;
h -= b.h;
return *this;
return *this;
}
Rect2 operator+(Rect2 lhs, const Rect2 &rhs) {
lhs.x += rhs.x;
lhs.x += rhs.x;
lhs.y += rhs.y;
lhs.w += rhs.w;
lhs.h += rhs.h;
return lhs;
return lhs;
}
Rect2 operator-(Rect2 lhs, const Rect2 &rhs) {
lhs.x -= rhs.x;
lhs.x -= rhs.x;
lhs.y -= rhs.y;
lhs.w -= rhs.w;
lhs.h -= rhs.h;
return lhs;
return lhs;
}
bool operator==(const Rect2 &a, const Rect2 &b) {
return a.is_equal_approx(b);
return a.is_equal_approx(b);
}
bool operator!=(const Rect2 &a, const Rect2 &b) {
return !a.is_equal_approx(b);
return !a.is_equal_approx(b);
}
Rect2::Rect2() {

4
core/math/rect2.h
View File

@ -5,6 +5,8 @@
#include <SDL.h>
#endif
#include "vector2.h"
class Rect2 {
public:
float get_area() const;
@ -18,6 +20,8 @@ public:
void grow(const float by);
void shrink(const float by);
void expand_to(const Vector2 &p_vector);
#ifdef SDL_AVAILABLE
SDL_Rect as_rect() const;
SDL_FRect as_frect() const;