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Happy new year to the wonderful Godot community! We're starting a new decade with a well-established, non-profit, free and open source game engine, and tons of further improvements in the pipeline from hundreds of contributors. Godot will keep getting better, and we're looking forward to all the games that the community will keep developing and releasing with it.
340 lines
9.6 KiB
C++
340 lines
9.6 KiB
C++
/*************************************************************************/
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/* vector2.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef VECTOR2_H
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#define VECTOR2_H
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#include "core/math/math_funcs.h"
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#include "core/ustring.h"
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struct Vector2i;
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struct Vector2 {
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enum Axis {
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AXIS_X,
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AXIS_Y,
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};
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union {
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real_t x;
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real_t width;
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};
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union {
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real_t y;
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real_t height;
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};
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_FORCE_INLINE_ real_t &operator[](int p_idx) {
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return p_idx ? y : x;
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}
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_FORCE_INLINE_ const real_t &operator[](int p_idx) const {
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return p_idx ? y : x;
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}
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void normalize();
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Vector2 normalized() const;
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bool is_normalized() const;
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real_t length() const;
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real_t length_squared() const;
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real_t distance_to(const Vector2 &p_vector2) const;
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real_t distance_squared_to(const Vector2 &p_vector2) const;
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real_t angle_to(const Vector2 &p_vector2) const;
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real_t angle_to_point(const Vector2 &p_vector2) const;
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_FORCE_INLINE_ Vector2 direction_to(const Vector2 &p_b) const;
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real_t dot(const Vector2 &p_other) const;
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real_t cross(const Vector2 &p_other) const;
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Vector2 posmod(const real_t p_mod) const;
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Vector2 posmodv(const Vector2 &p_modv) const;
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Vector2 project(const Vector2 &p_b) const;
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Vector2 plane_project(real_t p_d, const Vector2 &p_vec) const;
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Vector2 clamped(real_t p_len) const;
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_FORCE_INLINE_ static Vector2 linear_interpolate(const Vector2 &p_a, const Vector2 &p_b, real_t p_t);
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_FORCE_INLINE_ Vector2 linear_interpolate(const Vector2 &p_b, real_t p_t) const;
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_FORCE_INLINE_ Vector2 slerp(const Vector2 &p_b, real_t p_t) const;
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Vector2 cubic_interpolate(const Vector2 &p_b, const Vector2 &p_pre_a, const Vector2 &p_post_b, real_t p_t) const;
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Vector2 move_toward(const Vector2 &p_to, const real_t p_delta) const;
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Vector2 slide(const Vector2 &p_normal) const;
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Vector2 bounce(const Vector2 &p_normal) const;
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Vector2 reflect(const Vector2 &p_normal) const;
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bool is_equal_approx(const Vector2 &p_v) const;
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Vector2 operator+(const Vector2 &p_v) const;
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void operator+=(const Vector2 &p_v);
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Vector2 operator-(const Vector2 &p_v) const;
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void operator-=(const Vector2 &p_v);
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Vector2 operator*(const Vector2 &p_v1) const;
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Vector2 operator*(const real_t &rvalue) const;
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void operator*=(const real_t &rvalue);
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void operator*=(const Vector2 &rvalue) { *this = *this * rvalue; }
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Vector2 operator/(const Vector2 &p_v1) const;
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Vector2 operator/(const real_t &rvalue) const;
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void operator/=(const real_t &rvalue);
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void operator/=(const Vector2 &rvalue) { *this = *this / rvalue; }
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Vector2 operator-() const;
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bool operator==(const Vector2 &p_vec2) const;
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bool operator!=(const Vector2 &p_vec2) const;
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bool operator<(const Vector2 &p_vec2) const { return Math::is_equal_approx(x, p_vec2.x) ? (y < p_vec2.y) : (x < p_vec2.x); }
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bool operator>(const Vector2 &p_vec2) const { return Math::is_equal_approx(x, p_vec2.x) ? (y > p_vec2.y) : (x > p_vec2.x); }
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bool operator<=(const Vector2 &p_vec2) const { return Math::is_equal_approx(x, p_vec2.x) ? (y <= p_vec2.y) : (x < p_vec2.x); }
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bool operator>=(const Vector2 &p_vec2) const { return Math::is_equal_approx(x, p_vec2.x) ? (y >= p_vec2.y) : (x > p_vec2.x); }
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real_t angle() const;
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void set_rotation(real_t p_radians) {
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x = Math::cos(p_radians);
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y = Math::sin(p_radians);
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}
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_FORCE_INLINE_ Vector2 abs() const {
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return Vector2(Math::abs(x), Math::abs(y));
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}
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Vector2 rotated(real_t p_by) const;
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Vector2 tangent() const {
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return Vector2(y, -x);
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}
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Vector2 sign() const;
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Vector2 floor() const;
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Vector2 ceil() const;
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Vector2 round() const;
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Vector2 snapped(const Vector2 &p_by) const;
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real_t aspect() const { return width / height; }
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operator String() const { return String::num(x) + ", " + String::num(y); }
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_FORCE_INLINE_ Vector2(real_t p_x, real_t p_y) {
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x = p_x;
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y = p_y;
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}
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_FORCE_INLINE_ Vector2() { x = y = 0; }
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};
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_FORCE_INLINE_ Vector2 Vector2::plane_project(real_t p_d, const Vector2 &p_vec) const {
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return p_vec - *this * (dot(p_vec) - p_d);
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}
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_FORCE_INLINE_ Vector2 operator*(real_t p_scalar, const Vector2 &p_vec) {
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return p_vec * p_scalar;
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}
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_FORCE_INLINE_ Vector2 Vector2::operator+(const Vector2 &p_v) const {
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return Vector2(x + p_v.x, y + p_v.y);
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}
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_FORCE_INLINE_ void Vector2::operator+=(const Vector2 &p_v) {
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x += p_v.x;
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y += p_v.y;
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}
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_FORCE_INLINE_ Vector2 Vector2::operator-(const Vector2 &p_v) const {
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return Vector2(x - p_v.x, y - p_v.y);
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}
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_FORCE_INLINE_ void Vector2::operator-=(const Vector2 &p_v) {
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x -= p_v.x;
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y -= p_v.y;
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}
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_FORCE_INLINE_ Vector2 Vector2::operator*(const Vector2 &p_v1) const {
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return Vector2(x * p_v1.x, y * p_v1.y);
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};
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_FORCE_INLINE_ Vector2 Vector2::operator*(const real_t &rvalue) const {
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return Vector2(x * rvalue, y * rvalue);
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};
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_FORCE_INLINE_ void Vector2::operator*=(const real_t &rvalue) {
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x *= rvalue;
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y *= rvalue;
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};
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_FORCE_INLINE_ Vector2 Vector2::operator/(const Vector2 &p_v1) const {
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return Vector2(x / p_v1.x, y / p_v1.y);
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};
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_FORCE_INLINE_ Vector2 Vector2::operator/(const real_t &rvalue) const {
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return Vector2(x / rvalue, y / rvalue);
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};
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_FORCE_INLINE_ void Vector2::operator/=(const real_t &rvalue) {
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x /= rvalue;
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y /= rvalue;
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};
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_FORCE_INLINE_ Vector2 Vector2::operator-() const {
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return Vector2(-x, -y);
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}
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_FORCE_INLINE_ bool Vector2::operator==(const Vector2 &p_vec2) const {
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return x == p_vec2.x && y == p_vec2.y;
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}
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_FORCE_INLINE_ bool Vector2::operator!=(const Vector2 &p_vec2) const {
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return x != p_vec2.x || y != p_vec2.y;
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}
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Vector2 Vector2::linear_interpolate(const Vector2 &p_b, real_t p_t) const {
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Vector2 res = *this;
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res.x += (p_t * (p_b.x - x));
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res.y += (p_t * (p_b.y - y));
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return res;
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}
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Vector2 Vector2::slerp(const Vector2 &p_b, real_t p_t) const {
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#ifdef MATH_CHECKS
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ERR_FAIL_COND_V(!is_normalized(), Vector2());
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#endif
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real_t theta = angle_to(p_b);
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return rotated(theta * p_t);
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}
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Vector2 Vector2::direction_to(const Vector2 &p_b) const {
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Vector2 ret(p_b.x - x, p_b.y - y);
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ret.normalize();
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return ret;
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}
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Vector2 Vector2::linear_interpolate(const Vector2 &p_a, const Vector2 &p_b, real_t p_t) {
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Vector2 res = p_a;
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res.x += (p_t * (p_b.x - p_a.x));
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res.y += (p_t * (p_b.y - p_a.y));
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return res;
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}
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typedef Vector2 Size2;
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typedef Vector2 Point2;
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/* INTEGER STUFF */
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struct Vector2i {
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enum Axis {
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AXIS_X,
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AXIS_Y,
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};
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union {
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int x;
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int width;
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};
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union {
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int y;
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int height;
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};
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_FORCE_INLINE_ int &operator[](int p_idx) {
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return p_idx ? y : x;
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}
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_FORCE_INLINE_ const int &operator[](int p_idx) const {
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return p_idx ? y : x;
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}
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Vector2i operator+(const Vector2i &p_v) const;
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void operator+=(const Vector2i &p_v);
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Vector2i operator-(const Vector2i &p_v) const;
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void operator-=(const Vector2i &p_v);
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Vector2i operator*(const Vector2i &p_v1) const;
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Vector2i operator*(const int &rvalue) const;
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void operator*=(const int &rvalue);
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Vector2i operator/(const Vector2i &p_v1) const;
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Vector2i operator/(const int &rvalue) const;
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void operator/=(const int &rvalue);
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Vector2i operator-() const;
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bool operator<(const Vector2i &p_vec2) const { return (x == p_vec2.x) ? (y < p_vec2.y) : (x < p_vec2.x); }
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bool operator>(const Vector2i &p_vec2) const { return (x == p_vec2.x) ? (y > p_vec2.y) : (x > p_vec2.x); }
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bool operator==(const Vector2i &p_vec2) const;
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bool operator!=(const Vector2i &p_vec2) const;
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real_t get_aspect() const { return width / (real_t)height; }
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operator String() const { return String::num(x) + ", " + String::num(y); }
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operator Vector2() const { return Vector2(x, y); }
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inline Vector2i(const Vector2 &p_vec2) {
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x = (int)p_vec2.x;
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y = (int)p_vec2.y;
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}
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inline Vector2i(int p_x, int p_y) {
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x = p_x;
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y = p_y;
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}
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inline Vector2i() {
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x = 0;
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y = 0;
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}
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};
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typedef Vector2i Size2i;
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typedef Vector2i Point2i;
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#endif // VECTOR2_H
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