SdlSandbox/sdl2/simpleRotation/texturer.cpp

//
// Created by jovian on 16/07/17.
//
#include "texturer.h"

void logSDLError(std::ostream &os, const std::string &msg) {
    os << msg << " error: " << SDL_GetError() << std::endl;
}

SDL_Texture *loadTexture(const std::string &file, SDL_Renderer *ren) {
    SDL_Texture *texture = IMG_LoadTexture(ren, file.c_str());
    if (texture == nullptr) {
        logSDLError(std::cout, "LoadTexture");
    }
    return texture;
}

void renderTexture(SDL_Texture *tex, SDL_Renderer *ren, int x, int y, bool centered) {
    int w, h;
    SDL_QueryTexture(tex, NULL, NULL, &w, &h);
    renderTexture(tex, ren, x, y, w, h, centered);
}

void renderTexture(SDL_Texture *tex, SDL_Renderer *ren, int x, int y, int w, int h, bool centered) {
    SDL_Rect dst;
    dst.x = x;
    dst.y = y;
    dst.w = w;
    dst.h = h;

    if (centered) {
        dst.x -= dst.w / 2;
        dst.y -= dst.h / 2;
    }

    SDL_RenderCopy(ren, tex, NULL, &dst);
}

void renderTexture(SDL_Texture *tex, SDL_Renderer *ren, int x, int y, double angle, bool centered) {
    int w, h;
    SDL_QueryTexture(tex, NULL, NULL, &w, &h);
    renderTexture(tex, ren, x, y, angle, w, h, centered);
}

void
renderTexture(SDL_Texture *tex, SDL_Renderer *ren, int x, int y, double angle, int w, int h, bool centered) {
    SDL_Rect dst;
    dst.x = x;
    dst.y = y;
    dst.w = w;
    dst.h = h;

    if (centered) {
        dst.x -= dst.w / 2;
        dst.y -= dst.h / 2;
    }

    SDL_RenderCopyEx(ren, tex, NULL, &dst, angle, NULL, SDL_FLIP_NONE);
}