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Add Music fluctuations project and Chinese plan docs

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ssdfasd
2026-03-21 15:55:54 +08:00
parent 629455df07
commit a172d75e36
462 changed files with 382904 additions and 0 deletions
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164
MVS/Music fluctuations/source/scene/MainScene/MainScene.cpp Normal file
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#include"MainScene.h"
#include"../../global/Base.h"
#include <limits>
void MainScene::OnEnter()
{
std::cout << "enter——mainScene" << std::endl;
m_sunshine = "res/sound/cat.wav";
m_context->m_wavFileReader.OpenFile(m_sunshine);
std::cout << m_context->m_wavFileReader.GetSampleRate() << std::endl;
std::cout << m_context->m_wavFileReader.GetLastingTime() << std::endl;
std::cout << m_context->m_wavFileReader.GetSampleNum() << std::endl;
std::cout << m_context->m_wavFileReader.GetDataLength() << std::endl;
std::cout << m_context->m_wavFileReader.GetBitsPerSample() << std::endl;
std::cout << m_context->m_wavFileReader.GetBytesPerSec() << std::endl;
std::cout << m_context->m_wavFileReader.GetChannels() << std::endl;
int samplenum = (int)m_context->m_wavFileReader.GetSampleNum() / 2 / rate;
//滤波器初始化，长度为8192
filter = new FFTFilter(8192);
/*
44100
108.668
9584548（两个声道一共）
19169096
16
176400
2
*/
}
void MainScene::OnExit()
{
std::cout << "exit——mainScene" << std::endl;
}
int drawCount = 8192;
int sampleIndex = -drawCount / 2;
float time2 = 0;
float duanIndex = 0;
bool p = true;
void MainScene::Update(float p_deltaTime)
{
if (p) { p = false; audio_source = m_context->m_audioManager.Load("res/sound/cat.wav");
audio_source->Play();
audio_source->StartEnergyDetect();
return;
}
time2 += p_deltaTime;
sampleIndex += p_deltaTime * m_context->m_wavFileReader.GetSampleRate();
duanIndex += p_deltaTime * m_context->m_wavFileReader.GetSampleRate() / (float)1024 ;
//std::cout << duanIndex <<" " << rates[(int)duanIndex] << " "<<d[(int)duanIndex] << std::endl;
m_context->m_gpu.drawVerticalLine(30, 5, 10, RGBA(255, 0, 0, 255));
m_context->m_gpu.drawVerticalLine(60, 5, 10, RGBA(255, 0, 0, 255));
m_context->m_gpu.drawVerticalLine(90, 5, 10, RGBA(255, 0, 0, 255));
m_context->m_gpu.drawVerticalLine(120, 5, 10, RGBA(255, 0, 0, 255));
m_context->m_gpu.drawVerticalLine(150, 5, 10, RGBA(255, 0, 0, 255));
//for (int i = 0; i < 30* rates[(int)duanIndex]; i++)
//{
// m_context->m_gpu.drawVerticalLine(i, 0, 5, RGBA(0, 255, 0, 255));
//}
for (int i = 0; i < 30 * audio_source->GetEnergy(); i++)
{
m_context->m_gpu.drawVerticalLine(i, 0, 5, RGBA(0, 255, 0, 255));
}
/*时域转频域*/
std::vector<float> samples;
std::vector<float> fresamples(8192, 0.f);
for (int i = 0; i < drawCount; i++)
{
float sample = m_context->m_wavFileReader.GetSampleValue((i + sampleIndex) * 2);
samples.push_back(sample);
}
filter->ForwardTransform(samples, &fresamples);
int r = sin(time2) * 255;
for (int i = 0; i < drawCount; i++)
{
int x = i / (float)drawCount * 800;
//int y = m_context->m_wavFileReader.GetSampleValue((i + sampleIndex) * 2) / (float)65535 * 600 + 300;
int y = fresamples[i] / (float)655350 * 200 + 300;
if (x > 800)
{
m_context->m_gpu.drawPoint(x, y, RGBA(255, 255, 255, 255));
}
else
{
if (y > 300)
{
m_context->m_gpu.drawVerticalLine(x, 300, y, RGBA(r, x / (float)800 * 255, y / (float)600 * 255, 255));
}
else
{
m_context->m_gpu.drawVerticalLine(x, y, 300, RGBA(r, x / (float)800 * 255, y / (float)600 * 255, 255));
}
}
}
m_context->m_gpu.drawVerticalLine(400, 0, 600, RGBA(200, 0, 0, 255));
if (audio_source->GetEnergy() > 2.0f)
{
for (int i = 0; i < 40; i++)
{
for (int j = 0; j < 40; j++)
{
if (pow(i - 20, 2) + pow(j - 20, 2) < 400)
{
m_context->m_gpu.drawPoint(380 + i, 480 + j, RGBA(0, 255, 255, 255));
}
}
}
}
}
/*简单的波形图绘制*/
/*
int drawCount = 80000;
int sampleIndex = -drawCount/2;
void MainScene::Update(float p_deltaTime)
{
sampleIndex += p_deltaTime * m_context->m_wavFileReader.GetSampleRate();
for (int i = 0; i < drawCount; i++)
{
int x = i / (float)drawCount * 800;
int y = m_context->m_wavFileReader.GetSampleValue((i + sampleIndex)*2) / (float)65535 * 600 + 300;
if (x > 400)
{
m_context->m_gpu.drawPoint(x, y, RGBA(255, 255, 255, 255));
}
else
{
if (y > 300)
{
m_context->m_gpu.drawVerticalLine(x, 300,y, RGBA(120, 120, 120, 255));
}
else
{
m_context->m_gpu.drawVerticalLine(x, y, 300,RGBA(120, 120, 120, 255));
}
}
}
m_context->m_gpu.drawVerticalLine(400,0, 600, RGBA(200, 0, 0, 255));
}
*/