27 lines
725 B
C++
27 lines
725 B
C++
// Copyright (c) 2023 Dominic Masters
|
|
//
|
|
// This software is released under the MIT License.
|
|
// https://opensource.org/licenses/MIT
|
|
|
|
#include "Ray2D.hpp"
|
|
|
|
using namespace Dawn;
|
|
|
|
Ray2D::Ray2D(glm::vec2 pos, glm::vec2 dir) :
|
|
position(pos),
|
|
direction(dir)
|
|
{
|
|
}
|
|
|
|
bool_t Ray2D::intersects(struct Ray2D ray, glm::vec2 *out) {
|
|
glm::vec2 j = this->position - ray.position;
|
|
float_t f = -ray.direction.x * direction.y + direction.x * ray.direction.y;
|
|
float_t s = (-direction.y * j.x + direction.x * j.y) / f;
|
|
float_t t = (ray.direction.x * j.y - ray.direction.y * j.x) / f;
|
|
if(s >= 0 && s <= 1 && t >= 0 && t <= 1) {
|
|
*out = position + (t * direction);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
} |