/*
 * Copyright 2022 Frederico de Oliveira Linhares
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "graphic.h"

#include "color.h"

static mrb_value
cg_mGraphic_set_color(mrb_state *mrb, mrb_value self)
{
  struct cg_color *color;
  mrb_get_args(mrb, "d", &color, &cg_color_type);

  SDL_SetRenderDrawColor(
    cg_core.renderer, color->data.r, color->data.g, color->data.b,
    color->data.a);

  return self;
}

static mrb_value
cg_mGraphic_draw_point(mrb_state *mrb, mrb_value self)
{
  mrb_int x, y;
  mrb_get_args(mrb, "ii", &x, &y);
  SDL_RenderDrawPoint(cg_core.renderer, x, y);

  return self;
}

static mrb_value
cg_mGraphic_draw_line(mrb_state *mrb, mrb_value self)
{
  mrb_int x1, y1, x2, y2;
  mrb_get_args(mrb, "iiii", &x1, &y1, &x2, &y2);
  SDL_RenderDrawLine(cg_core.renderer, x1, y1, x2, y2);

  return self;
}

void
cg_graphic_init(mrb_state *mrb)
{
  struct RClass *cg_m, *cg_mGraphic;

  cg_m = mrb_module_get(mrb, "CandyGear");
  cg_mGraphic = mrb_define_module_under(mrb, cg_m, "Graphic");
  mrb_define_class_method(
    mrb, cg_mGraphic, "set_color", cg_mGraphic_set_color, MRB_ARGS_REQ(1));
  mrb_define_class_method(
    mrb, cg_mGraphic, "draw_point", cg_mGraphic_draw_point, MRB_ARGS_REQ(2));
  mrb_define_class_method(
    mrb, cg_mGraphic, "draw_line", cg_mGraphic_draw_line, MRB_ARGS_REQ(4));
}