使用C#和Visual Studio 2010,如何从彩色电影制作灰度级电动车?我应该以某种方式枚举记录并更改颜色设置吗?
结果我想要一个新的电影图像。
答案 0 :(得分:0)
这是一个开源的emf读/写实用程序。我不认为可以使用GDI +来保存矢量内容。所以这有望帮助你,但我没有远程测试所有可能的电动车案例。
这适用于wmf和emf格式。我们可以将Oxage.Wmf策略与来自其他帖子的策略结合起来,该策略在创建时基本上重新着色笔或画笔,以便用该笔或画笔绘制的任何内容都应该是灰色的。
using Oxage.Wmf;
using Oxage.Wmf.Records;
using Oxage.Wmf.Objects;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace MetafileTest
{
public class GrayMap
{
public void GrayFile(string sourceFile, string destFile){
WmfDocument wmf = new WmfDocument();
wmf.Load(sourceFile);
foreach (var record in wmf.Records)
{
if (record is WmfCreateBrushIndirectRecord)
{
var brush = record as WmfCreateBrushIndirectRecord;
brush.Color = Gray(brush.Color);
}
else if (record is WmfCreatePenIndirectRecord)
{
var pen = record as WmfCreatePenIndirectRecord;
pen.Color = Gray(pen.Color);
}
else if (record is WmfCreatePalette) {
var pal = record as WmfCreatePalette;
foreach (PaletteEntry entry in pal.Palette.PaletteEntries) {
Color test = Color.FromArgb(entry.Red, entry.Green, entry.Blue);
Color grayTest = Gray(test);
entry.Red = grayTest.R;
entry.Green = grayTest.G;
entry.Blue = grayTest.B;
}
}
}
wmf.Save(destFile);
}
public Color Gray(Color original) {
int r = (int)(original.R*0.2989);
int g = (int)(original.G*0.5870);
int b = (int)(original.B*0.1140);
Color result = Color.FromArgb(r, g, b);
return result;
}
}
}
这是通过以下填充蓝色矩形的超简单案例进行测试的,因此至少在简单的情况下这将起作用。它可能无法处理所有情况,但在这种情况下,您可以扩展原始源以满足您的需求,因为它是开源的。
private void button1_Click(object sender, EventArgs e)
{
var wmf = new WmfDocument();
wmf.Width = 1000;
wmf.Height = 1000;
wmf.Format.Unit = 288;
wmf.AddPolyFillMode(PolyFillMode.WINDING);
wmf.AddCreateBrushIndirect(Color.Blue, BrushStyle.BS_SOLID);
wmf.AddSelectObject(0);
wmf.AddCreatePenIndirect(Color.Black, PenStyle.PS_SOLID, 1);
wmf.AddSelectObject(1);
wmf.AddRectangle(100, 100, 800, 800);
wmf.AddDeleteObject(0);
wmf.AddDeleteObject(1);
wmf.Save("D:\\test.emf");
}
private void button2_Click(object sender, EventArgs e)
{
GrayMap map = new GrayMap();
map.GrayFile("D:\\test.emf", "D:\\test2.emf");
}