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/*
* Copyright 2022-2025 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 "binary_writer.hpp"
#include <iostream>
namespace
{
union IntAndFloat32bit{
UI32 i;
F32 f;
};
union IntAndFloat64bit{
UI64 i;
F64 f;
};
}
BinaryWriter::BinaryWriter(const char *file_path):
output{file_path, std::ios::binary}
{
}
BinaryWriter::BinaryWriter(const std::string &file_path):
BinaryWriter{file_path.c_str()}
{
}
void
BinaryWriter::write_ui8(UI8 var)
{
this->output.put(var);
}
void
BinaryWriter::write_ui32(UI32 var)
{
using namespace std;
UI8 b1 = var >> 24;
UI8 b2 = var >> 16;
UI8 b3 = var >> 8;
UI8 b4 = var;
this->output.put(b1);
this->output.put(b2);
this->output.put(b3);
this->output.put(b4);
}
void
BinaryWriter::write_ui64(UI64 var)
{
using namespace std;
UI8 b1 = var >> 56;
UI8 b2 = var >> 48;
UI8 b3 = var >> 40;
UI8 b4 = var >> 32;
UI8 b5 = var >> 24;
UI8 b6 = var >> 16;
UI8 b7 = var >> 8;
UI8 b8 = var;
this->output.put(b1);
this->output.put(b2);
this->output.put(b3);
this->output.put(b4);
this->output.put(b5);
this->output.put(b6);
this->output.put(b7);
this->output.put(b8);
}
void
BinaryWriter::write_f32(F32 var)
{
IntAndFloat32bit num;
num.f = var;
write_ui32(num.i);
}
void
BinaryWriter::write_f64(F64 var)
{
IntAndFloat64bit num;
num.f = var;
write_ui64(num.i);
}
void
BinaryWriter::write_vec2(glm::vec2 var)
{
IntAndFloat32bit x, y;
x.f = var.x;
y.f = var.y;
this->write_ui32(x.i);
this->write_ui32(y.i);
}
void
BinaryWriter::write_vec3(glm::vec3 var)
{
IntAndFloat32bit x, y, z;
x.f = var.x;
y.f = var.y;
z.f = var.z;
this->write_ui32(x.i);
this->write_ui32(y.i);
this->write_ui32(z.i);
}
void
BinaryWriter::write_quat(glm::quat var)
{
IntAndFloat32bit w, x, y, z;
w.f = var.w;
x.f = var.x;
y.f = var.y;
z.f = var.z;
this->write_ui32(w.i);
this->write_ui32(x.i);
this->write_ui32(y.i);
this->write_ui32(z.i);
}
void
BinaryWriter::write_mat4(glm::mat4 var)
{
float *offset_matrix_data{glm::value_ptr(var)};
IntAndFloat32bit num;
for(int i{0}; i < 16; i++)
{
num.f = offset_matrix_data[i];
this->write_ui32(num.i);
}
}
void
BinaryWriter::write_chars(const char *str, int size)
{
for(int i{0}; i < size; i++) this->write_ui8((UI8)str[i]);
}
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