基本信息
源码名称：水波效果
源码大小：0.07M
文件格式：.zip
开发语言：C#
更新时间：2015-12-15
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源码介绍
实现窗体的水波效果
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;
namespace SDEffectWaterWave
{
public partial class FormMain : Form
{
#region 变量
Bitmap m_bmp; // 图片
byte[] m_byArrClrInfo; // 图片原始颜色信息
byte[] m_byArrClrBuff; // 图片新的颜色信息
int[,] m_nArrWaveCurrent; // 当前波形
int[,] m_nArrWaveNext; // 下一帧的波形
int m_nBmpWidth; // 图片宽度
int m_nBmpHeight; // 图片高度
int m_nBmpWidthBySize; // 图片每行占用字节数
#endregion
#region 构造函数
/// <summary>
/// 构造函数
/// </summary>
public FormMain()
{
InitializeComponent();
}
#endregion
#region 窗体事件
/// <summary>
/// 处理窗体加载事件
/// </summary>
/// <param name="sender">事件源</param>
/// <param name="e">事件</param>
private void FormMain_Load(object sender, EventArgs e)
{
// 加载图像 设置界面显示
Bitmap bmp = new Bitmap("background.jpg");// 打开一张图将起转换为24位
m_bmp = bmp.Clone(new Rectangle(0, 0, bmp.Width, bmp.Height), PixelFormat.Format24bppRgb);
pictureBox.Image = m_bmp;
pictureBox.SizeMode = PictureBoxSizeMode.AutoSize;
this.Width = pictureBox.Width 2 * pictureBox.Left (this.Size - this.ClientSize).Width;
this.Height = pictureBox.Height 2 * pictureBox.Top (this.Size - this.ClientSize).Height;
this.BackColor = Color.Black;
// 加载图像信息 初始化变量
BitmapData bmpData = m_bmp.LockBits(new Rectangle(0, 0, m_bmp.Width, m_bmp.Height), ImageLockMode.ReadOnly, m_bmp.PixelFormat);
m_byArrClrInfo = new byte[bmpData.Stride * bmpData.Height];
m_byArrClrBuff = new byte[m_byArrClrInfo.Length];
m_nArrWaveCurrent = new int[m_bmp.Width, m_bmp.Height];
m_nArrWaveNext = new int[m_bmp.Width, m_bmp.Height];
m_nBmpWidth = m_bmp.Width;
m_nBmpHeight = m_bmp.Height;
m_nBmpWidthBySize = bmpData.Stride;
Marshal.Copy(bmpData.Scan0, m_byArrClrInfo, 0, m_byArrClrInfo.Length);
m_bmp.UnlockBits(bmpData);
// 启动水波的模拟
timerDraw.Interval = 25; // 绘制水波
timerDraw.Enabled = true;
timerSetWave.Interval = 500; // 随机产生波源
timerSetWave.Enabled = true;
}
/// <summary>
/// 处理定时器时间步事件[绘制水波]
/// </summary>
/// <param name="sender">事件源</param>
/// <param name="e">事件</param>
private void timerDraw_Tick(object sender, EventArgs e)
{
int nNewX = 0;
int nNewY = 0;
BitmapData bmpData = m_bmp.LockBits(new Rectangle(0, 0, m_bmp.Width, m_bmp.Height), ImageLockMode.ReadWrite, m_bmp.PixelFormat);
Marshal.Copy(bmpData.Scan0, m_byArrClrBuff, 0, m_byArrClrBuff.Length);
for (int y = 1; y < m_nBmpHeight - 1; y )
{
for (int x = 1; x < m_nBmpWidth - 1; x )
{
m_nArrWaveNext[x, y] = (( // 能量传递
m_nArrWaveCurrent[x - 1, y] // 注意 能量传递是通过当前波形计算新的波形
m_nArrWaveCurrent[x 1, y] // m_nArrWaveCurrent m_nArrWaveNext 不要弄翻
m_nArrWaveCurrent[x, y - 1]
m_nArrWaveCurrent[x, y 1])
>> 1) - m_nArrWaveNext[x, y];
m_nArrWaveNext[x, y] -= m_nArrWaveNext[x, y] >> 5; // 产生阻尼
// 像素偏移 (模拟折射)
nNewX = ((m_nArrWaveNext[x 1, y] - m_nArrWaveNext[x - 1, y]) >> 0) x; // 右移越大 折射变大
nNewY = ((m_nArrWaveNext[x, y 1] - m_nArrWaveNext[x, y - 1]) >> 0) y; // 左移也可 折射变小
if (nNewX == x && nNewY == y) continue; // 没有产生像素偏移 直接跳过
if (nNewX < 0) nNewX = -nNewX; // 也可将其赋值为 0
if (nNewX >= m_nBmpWidth) nNewX = m_nBmpWidth - 1;
if (nNewY < 0) nNewY = -nNewY;
if (nNewY >= m_nBmpHeight) nNewY = m_nBmpHeight - 1;
// 模拟光的反射 也可以跳过 不过波纹明暗度不明显
// m_byArrClrBuff[y * m_nBmpWidthBySize x * 3] = m_byArrClrInfo[nNewY * m_nBmpWidthBySize nNewX * 3];
// m_byArrClrBuff[y * m_nBmpWidthBySize x * 3 1] = m_byArrClrInfo[nNewY * m_nBmpWidthBySize nNewX * 3 1];
// m_byArrClrBuff[y * m_nBmpWidthBySize x * 3 2] = m_byArrClrInfo[nNewY * m_nBmpWidthBySize nNewX * 3 2];
// continue;
int nIncrement = m_nArrWaveNext[x, y]; // 用当前像素点的能量作为光线明暗度变化标志
nIncrement >>= nIncrement < 0 ? 5 : 3; // 如果负数变暗 正数变量 (适当的位移一下不然差距太大)
// 重置RGB值
int r = m_byArrClrInfo[nNewY * m_nBmpWidthBySize nNewX * 3] nIncrement;
int g = m_byArrClrInfo[nNewY * m_nBmpWidthBySize nNewX * 3 1] nIncrement;
int b = m_byArrClrInfo[nNewY * m_nBmpWidthBySize nNewX * 3 2] nIncrement;
if (nIncrement < 0)
{ // 如果是负数便是变暗 则不能让其越界 0 - 255
r = r < 0 ? 0 : r;
g = g < 0 ? 0 : g;
b = b < 0 ? 0 : b;
}
else
{
r = r > 255 ? 255 : r;
g = g > 255 ? 255 : g;
b = b > 255 ? 255 : b;
}
m_byArrClrBuff[y * m_nBmpWidthBySize x * 3] = (byte)r;
m_byArrClrBuff[y * m_nBmpWidthBySize x * 3 1] = (byte)g;
m_byArrClrBuff[y * m_nBmpWidthBySize x * 3 2] = (byte)b;
}
}
Marshal.Copy(m_byArrClrBuff, 0, bmpData.Scan0, m_byArrClrBuff.Length);
m_bmp.UnlockBits(bmpData);
pictureBox.Refresh();
// 交换能量缓存 将新产生的波形 赋值给当前波形的缓存 计算下一帧的波形
int[,] temp = m_nArrWaveCurrent;
m_nArrWaveCurrent = m_nArrWaveNext;
m_nArrWaveNext = temp;
}
/// <summary>
/// 处理定时器时间步事件[设置水波]
/// </summary>
/// <param name="sender">事件源</param>
/// <param name="e">事件</param>
private void timerSetWave_Tick(object sender, EventArgs e)
{
Random rd = new Random();
for (int i = 0; i < 5; i ) // 随机产生五个波源
{
SetWavePoint(rd.Next(m_nBmpWidth - 1), rd.Next(m_nBmpHeight - 1), rd.Next(5, 10), rd.Next(32, 128));
}
}
/// <summary>
/// 处理定时器时间步事件[绘制水波]
/// </summary>
/// <param name="sender">事件源</param>
/// <param name="e">事件</param>
private void pictureBox_MouseMove(object sender, MouseEventArgs e)
{
Random rd = new Random(); // 将鼠标滑动过的位置产生波源
SetWavePoint(e.X, e.Y, rd.Next(5, 10), rd.Next(32, 128));
}
#endregion
#region 辅助调用
/// <summary>
/// 设置波源
/// </summary>
/// <param name="x">波源坐标X</param>
/// <param name="y">波源坐标Y</param>
/// <param name="r">波源半径</param>
/// <param name="h">波源的能量大小</param>
public void SetWavePoint(int x, int y, int r, int h)
{
// 判断波源所在矩形位置是否越出图像 以便将越出部分坐标重置
int nXStart = x - r < 0 ? 0 : x - r; // 波源矩形位置x轴起点
int nYStart = y - r < 0 ? 0 : y - r; // 波源矩形位置y轴起点
int nXLen = x r >= m_nBmpWidth ? m_nBmpWidth - 1 : x r; // 波源x轴矩形长度
int nYlen = y r >= m_nBmpHeight ? m_nBmpHeight - 1 : y r; // 波源y轴矩形长度
for (int posX = nXStart; posX < nXLen; posX )
{
for (int posY = nYStart; posY < nYlen; posY )
{ // 以点(x,y)半径为r内的点赋值一个能量
if ((posX - x) * (posX - x) (posY - y) * (posY - y) < r * r)
m_nArrWaveCurrent[posX, posY] = -h;
}
}
}
#endregion
}
}