mirror of
https://github.com/Relintai/gdnative_cpp.git
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338 lines
8.0 KiB
C++
338 lines
8.0 KiB
C++
#ifndef VECTOR3_H
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#define VECTOR3_H
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/*************************************************************************/
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/* vector3.h */
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/*************************************************************************/
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/* This file is part of: */
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/* PANDEMONIUM ENGINE */
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/* https://pandemoniumengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Pandemonium 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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#include <gdn/vector3.h>
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#include "defs.h"
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#include <math_funcs.h>
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class Basis;
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class String;
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struct Vector3 {
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enum Axis {
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AXIS_X,
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AXIS_Y,
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AXIS_Z,
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AXIS_COUNT
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};
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static const Vector3 ZERO;
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static const Vector3 ONE;
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static const Vector3 INF;
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// Coordinate system of the 3D engine
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static const Vector3 LEFT;
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static const Vector3 RIGHT;
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static const Vector3 UP;
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static const Vector3 DOWN;
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static const Vector3 FORWARD;
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static const Vector3 BACK;
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union {
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struct {
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real_t x;
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real_t y;
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real_t z;
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};
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real_t coord[3]; // Not for direct access, use [] operator instead
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};
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inline Vector3(real_t x, real_t y, real_t z) {
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this->x = x;
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this->y = y;
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this->z = z;
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}
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inline Vector3() {
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this->x = 0;
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this->y = 0;
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this->z = 0;
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}
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inline const real_t &operator[](int p_axis) const {
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return coord[p_axis];
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}
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inline real_t &operator[](int p_axis) {
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return coord[p_axis];
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}
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inline Vector3 &operator+=(const Vector3 &p_v) {
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x += p_v.x;
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y += p_v.y;
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z += p_v.z;
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return *this;
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}
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inline Vector3 operator+(const Vector3 &p_v) const {
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Vector3 v = *this;
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v += p_v;
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return v;
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}
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inline Vector3 &operator-=(const Vector3 &p_v) {
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x -= p_v.x;
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y -= p_v.y;
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z -= p_v.z;
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return *this;
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}
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inline Vector3 operator-(const Vector3 &p_v) const {
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Vector3 v = *this;
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v -= p_v;
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return v;
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}
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inline Vector3 &operator*=(const Vector3 &p_v) {
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x *= p_v.x;
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y *= p_v.y;
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z *= p_v.z;
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return *this;
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}
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inline Vector3 operator*(const Vector3 &p_v) const {
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Vector3 v = *this;
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v *= p_v;
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return v;
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}
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inline Vector3 &operator/=(const Vector3 &p_v) {
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x /= p_v.x;
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y /= p_v.y;
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z /= p_v.z;
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return *this;
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}
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inline Vector3 operator/(const Vector3 &p_v) const {
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Vector3 v = *this;
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v /= p_v;
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return v;
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}
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inline Vector3 &operator*=(real_t p_scalar) {
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*this *= Vector3(p_scalar, p_scalar, p_scalar);
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return *this;
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}
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inline Vector3 operator*(real_t p_scalar) const {
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Vector3 v = *this;
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v *= p_scalar;
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return v;
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}
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inline Vector3 &operator/=(real_t p_scalar) {
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*this /= Vector3(p_scalar, p_scalar, p_scalar);
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return *this;
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}
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inline Vector3 operator/(real_t p_scalar) const {
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Vector3 v = *this;
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v /= p_scalar;
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return v;
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}
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inline Vector3 operator-() const {
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return Vector3(-x, -y, -z);
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}
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inline bool operator==(const Vector3 &p_v) const {
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return (x == p_v.x && y == p_v.y && z == p_v.z);
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}
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inline bool operator!=(const Vector3 &p_v) const {
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return (x != p_v.x || y != p_v.y || z != p_v.z);
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}
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bool operator<(const Vector3 &p_v) const;
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bool operator<=(const Vector3 &p_v) const;
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inline Vector3 abs() const {
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return Vector3(::fabs(x), ::fabs(y), ::fabs(z));
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}
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inline Vector3 ceil() const {
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return Vector3(::ceil(x), ::ceil(y), ::ceil(z));
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}
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inline Vector3 cross(const Vector3 &b) const {
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Vector3 ret(
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(y * b.z) - (z * b.y),
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(z * b.x) - (x * b.z),
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(x * b.y) - (y * b.x));
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return ret;
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}
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inline Vector3 linear_interpolate(const Vector3 &p_b, real_t p_t) const {
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return Vector3(
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x + (p_t * (p_b.x - x)),
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y + (p_t * (p_b.y - y)),
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z + (p_t * (p_b.z - z)));
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}
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inline Vector3 slerp(const Vector3 &p_b, real_t p_t) const {
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real_t theta = angle_to(p_b);
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return rotated(cross(p_b).normalized(), theta * p_t);
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}
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Vector3 cubic_interpolate(const Vector3 &b, const Vector3 &pre_a, const Vector3 &post_b, const real_t t) const;
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Vector3 move_toward(const Vector3 &p_to, const real_t p_delta) const {
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Vector3 v = *this;
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Vector3 vd = p_to - v;
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real_t len = vd.length();
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return len <= p_delta || len < CMP_EPSILON ? p_to : v + vd / len * p_delta;
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}
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Vector3 bounce(const Vector3 &p_normal) const {
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return -reflect(p_normal);
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}
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inline real_t length() const {
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real_t x2 = x * x;
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real_t y2 = y * y;
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real_t z2 = z * z;
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return ::sqrt(x2 + y2 + z2);
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}
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inline real_t length_squared() const {
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real_t x2 = x * x;
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real_t y2 = y * y;
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real_t z2 = z * z;
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return x2 + y2 + z2;
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}
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inline real_t distance_squared_to(const Vector3 &b) const {
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return (b - *this).length_squared();
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}
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inline real_t distance_to(const Vector3 &b) const {
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return (b - *this).length();
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}
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inline real_t dot(const Vector3 &b) const {
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return x * b.x + y * b.y + z * b.z;
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}
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inline Vector3 project(const Vector3 &p_b) const {
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return p_b * (dot(p_b) / p_b.length_squared());
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}
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inline real_t angle_to(const Vector3 &b) const {
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return Math::atan2(cross(b).length(), dot(b));
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}
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inline Vector3 direction_to(const Vector3 &p_b) const {
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Vector3 ret(p_b.x - x, p_b.y - y, p_b.z - z);
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ret.normalize();
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return ret;
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}
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inline Vector3 floor() const {
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return Vector3(::floor(x), ::floor(y), ::floor(z));
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}
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inline Vector3 inverse() const {
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return Vector3(1.f / x, 1.f / y, 1.f / z);
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}
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inline bool is_normalized() const {
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return ABS(length_squared() - 1.f) < 0.00001f;
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}
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Basis outer(const Vector3 &b) const;
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int max_axis() const;
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int min_axis() const;
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inline void normalize() {
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real_t l = length();
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if (l == 0) {
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x = y = z = 0;
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} else {
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x /= l;
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y /= l;
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z /= l;
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}
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}
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inline Vector3 normalized() const {
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Vector3 v = *this;
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v.normalize();
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return v;
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}
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inline Vector3 reflect(const Vector3 &p_normal) const {
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return -(*this - p_normal * this->dot(p_normal) * 2.0);
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}
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inline Vector3 rotated(const Vector3 &axis, const real_t phi) const {
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Vector3 v = *this;
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v.rotate(axis, phi);
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return v;
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}
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void rotate(const Vector3 &p_axis, real_t p_phi);
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inline Vector3 slide(const Vector3 &by) const {
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return *this - by * this->dot(by);
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}
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void snap(real_t p_val);
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inline Vector3 snapped(const float by) {
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Vector3 v = *this;
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v.snap(by);
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return v;
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}
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operator String() const;
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};
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inline Vector3 operator*(real_t p_scalar, const Vector3 &p_vec) {
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return p_vec * p_scalar;
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}
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inline Vector3 vec3_cross(const Vector3 &p_a, const Vector3 &p_b) {
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return p_a.cross(p_b);
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}
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#endif // VECTOR3_H
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