#include "utils.h"
#include "scenetree.h"

std::vector<std::string> utils::split(const std::string &line, char sep){
    std::vector<std::string> tokens;
    std::size_t start=0, end=0;
    while((end = line.find(sep,start)) != std::string::npos){
        tokens.push_back(line.substr(start,end-start));
        start=end+1;
    }
    tokens.push_back(line.substr(start));
    return tokens;
}

void utils::setPosition2D(MeshNode *mnode, glm::vec2 pos){
    glm::mat4 tr = mnode->getTransform();
    glm::vec3 vpos(pos.x,pos.y,0);
    tr = glm::translate(tr,vpos - glm::vec3(tr[3]));
    mnode->setTransform(tr);
}

void utils::resize2D(MeshNode *mnode, glm::vec2 dim, glm::vec2 new_dim){
    glm::mat4 tr = mnode->getTransform();
    glm::vec3 pos(tr[3]);
    glm::vec2 ratio = new_dim / dim;
    tr = glm::scale(tr, glm::vec3(1,ratio.y,1));
    glm::vec3 new_pos(tr[3]);
    tr = glm::translate(tr,pos-new_pos);
    mnode->setTransform(tr);
}