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/*
* 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 "camera.hpp"
#include "vk/camera.hpp"
void
cg_free_camera(mrb_state *mrb, void* obj)
{
auto ptr = static_cast<std::shared_ptr<VK::Camera>*>(obj);
ptr->~shared_ptr();
mrb_free(mrb, ptr);
}
const struct mrb_data_type cg_camera_type = {"CG_Camera", cg_free_camera};
static mrb_value
cg_cCamera_initialize(mrb_state *mrb, mrb_value self)
{
mrb_float position_x, position_y, position_z,
rotation_x, rotation_y, rotation_z;
std::shared_ptr<VK::Camera> *ptr;
mrb_get_args(
mrb, "ffffff",
&position_x, &position_y, &position_z,
&rotation_x, &rotation_y, &rotation_z);
ptr = (std::shared_ptr<VK::Camera>*)DATA_PTR(self);
if(ptr) mrb_free(mrb, ptr);
ptr = (std::shared_ptr<VK::Camera>*)mrb_malloc(
mrb, sizeof(std::shared_ptr<VK::Camera>));
new(ptr)std::shared_ptr<VK::Camera>(std::make_shared<VK::Camera>());
(*ptr)->position = glm::vec3(position_x, position_y, position_z);
(*ptr)->rotation = glm::vec3(rotation_x, rotation_y, rotation_z);
mrb_data_init(self, ptr, &cg_camera_type);
return self;
}
static mrb_value
cg_cCamera_use(mrb_state *mrb, mrb_value self)
{
std::shared_ptr<VK::Camera> *ptr;
ptr = (std::shared_ptr<VK::Camera>*)DATA_PTR(self);
cg_core.vk_graphics_pipeline->camera = (*ptr);
return self;
}
static mrb_value
cg_cCamera_rotate(mrb_state *mrb, mrb_value self)
{
mrb_float x, y, z;
std::shared_ptr<VK::Camera> *ptr;
mrb_get_args(mrb, "fff", &x, &y, &z);
ptr = (std::shared_ptr<VK::Camera>*)DATA_PTR(self);
(*ptr)->rotation.x += x;
(*ptr)->rotation.y += y;
(*ptr)->rotation.z += z;
return self;
}
static mrb_value
cg_cCamera_translate(mrb_state *mrb, mrb_value self)
{
mrb_float x, y, z;
std::shared_ptr<VK::Camera> *ptr;
mrb_get_args(mrb, "fff", &x, &y, &z);
ptr = (std::shared_ptr<VK::Camera>*)DATA_PTR(self);
(*ptr)->position.x += x;
(*ptr)->position.y += y;
(*ptr)->position.z += z;
return self;
}
static mrb_value
cg_cCamera_translate_by_rotation(mrb_state *mrb, mrb_value self)
{
mrb_float x, y, z;
std::shared_ptr<VK::Camera> *ptr;
mrb_get_args(mrb, "fff", &x, &y, &z);
ptr = (std::shared_ptr<VK::Camera>*)DATA_PTR(self);
glm::mat4 matrix{1.0f};
matrix = glm::rotate(
matrix, (*ptr)->rotation.x, glm::vec3{1.0f, 0.0f, 0.0f});
matrix = glm::rotate(
matrix, (*ptr)->rotation.y, glm::vec3{0.0f, 1.0f, 0.0f});
matrix = glm::rotate(
matrix, (*ptr)->rotation.z, glm::vec3{0.0f, 0.0f, 1.0f});
glm::vec4 rotated_vector{matrix * glm::vec4{x, y, z, 1.0}};
(*ptr)->position.x += rotated_vector.x;
(*ptr)->position.y += rotated_vector.y;
(*ptr)->position.z += rotated_vector.z;
return self;
}
void
cg_camera_init(mrb_state *mrb)
{
struct RClass *cg_m, *cg_cCamera;
cg_m = mrb_module_get(mrb, "CandyGear");
cg_cCamera = mrb_define_class_under(mrb, cg_m, "Camera", mrb->object_class);
MRB_SET_INSTANCE_TT(cg_cCamera, MRB_TT_DATA);
mrb_define_method(
mrb, cg_cCamera, "initialize", cg_cCamera_initialize, MRB_ARGS_REQ(6));
mrb_define_method(mrb, cg_cCamera, "use", cg_cCamera_use, MRB_ARGS_NONE());
mrb_define_method(
mrb, cg_cCamera, "rotate", cg_cCamera_rotate, MRB_ARGS_REQ(3));
mrb_define_method(
mrb, cg_cCamera, "translate", cg_cCamera_translate, MRB_ARGS_REQ(3));
mrb_define_method(
mrb, cg_cCamera, "translate_by_rotation",
cg_cCamera_translate_by_rotation, MRB_ARGS_REQ(3));
}
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