参考wowmapview写了一个小地图查看的控件, 可以载入*.wdl文件解析出一张类似于"卫星图"的东西
WDL文件保存的是WOW地图的低精度高度数据, 冒似用来做远处的LOD的
每个地图最大是64*64个tile, 而一个tile它保存了17*17 16*16个16位的高度数据.
如果生成一张512*512大小的小地图的话, 每个tile就只有8*8个像素
因此, 我们只取17*17中的偶数点
下面这张是Kalimdor的生成效果
代码语言：javascript复制#pragma once
using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
using namespace System::Drawing::Imaging;
using namespace System::IO;
namespace WOWMinimap {
typedef unsigned int uint;
typedef unsigned char byte;
/// <summary>
/// Summary for MiniMap
/// </summary>
public ref class MiniMap : public System::Windows::Forms::UserControl
{
public:
static const int MINIMAP_SIZE = 512;
static const int MAX_WIDTH_IN_TILE = 64;
static const int MAX_TILE_NUM = MAX_WIDTH_IN_TILE * MAX_WIDTH_IN_TILE;
static const int TILE_WIDTH_IN_PIXEL = 8;
static const int TILE_WIDTH_IN_VERTEX = 17;
static const int TILE_VERTEX_NUM = TILE_WIDTH_IN_VERTEX * TILE_WIDTH_IN_VERTEX;
public:
MiniMap(void)
{
InitializeComponent();
//
//TODO: Add the constructor code here
//
this->bitmap = gcnew Bitmap(MINIMAP_SIZE, MINIMAP_SIZE, PixelFormat::Format32bppArgb);
}
void LoadMapHeight(String^ filename)
{
FileStream^ fs = gcnew FileStream(filename, FileMode::Open);
BinaryReader^ br = gcnew BinaryReader(fs);
// abort the version chunk
fs->Seek(0x10, SeekOrigin::Begin);
// load tile's file offsets
array<uint>^ offsets = gcnew array<uint>(MAX_WIDTH_IN_TILE*MAX_WIDTH_IN_TILE);
for (int i = 0; i < MAX_TILE_NUM; i )
{
offsets[i] = br->ReadUInt32();
}
// load tile height
for (int i = 0; i < MAX_TILE_NUM; i )
{
Console::WriteLine("{0}%", 100.0f * i / float(MAX_TILE_NUM-1));
if (0 == offsets[i])
{
// tile is not used
continue;
}
LoadTileHeight(i, offsets[i], fs);
}
// repaint
this->Invalidate();
fs->Close();
}
private:
void LoadTileHeight(uint index, uint offset, FileStream^ fs)
{
fs->Seek(offset 8, SeekOrigin::Begin);
BinaryReader^ br = gcnew BinaryReader(fs);
// read heights
array<short>^ heights = gcnew array<short>(TILE_VERTEX_NUM);
for (int i = 0; i < TILE_VERTEX_NUM; i )
{
heights[i] = br->ReadUInt16();
}
int left = index % MAX_WIDTH_IN_TILE * TILE_WIDTH_IN_PIXEL;
int top = index / MAX_WIDTH_IN_TILE * TILE_WIDTH_IN_PIXEL;
Rectangle rect(left, top, TILE_WIDTH_IN_PIXEL, TILE_WIDTH_IN_PIXEL);
BitmapData^ bmpData = this->bitmap->LockBits(rect, ImageLockMode::WriteOnly, this->bitmap->PixelFormat);
int* color = (int*)bmpData->Scan0.ToPointer();
// convert to color
for (int z = 0; z < TILE_WIDTH_IN_PIXEL; z )
{
for (int x = 0; x < TILE_WIDTH_IN_PIXEL; x )
{
short height = heights[(z * 2) * TILE_WIDTH_IN_VERTEX x * 2];
color[x] = HeightToColor(height).ToArgb();
}
color = MINIMAP_SIZE;
}
this->bitmap->UnlockBits(bmpData);
}
Color HeightToColor(short height)
{
byte r1,r2,g1,g2,b1,b2;
float t;
byte r, g, b;
if (height < 0)
{
// water = blue
if (height < -511) height = -511;
height /= -2;
r = g = 0;
b = 255 - height;
}
else
{
// green: 20,149,7 0-600
// brown: 137, 84, 21 600-1200
// gray: 96, 96, 96 1200-1600
// white: 255, 255, 255
if (height < 600)
{
r1 = 20;
r2 = 137;
g1 = 149;
g2 = 84;
b1 = 7;
b2 = 21;
t = height / 600.0f;
}
else if (height < 1200)
{
r2 = 96;
r1 = 137;
g2 = 96;
g1 = 84;
b2 = 96;
b1 = 21;
t = (height-600) / 600.0f;
}
else /*if (height < 1600)*/
{
r1 = 96;
r2 = 255;
g1 = 96;
g2 = 255;
b1 = 96;
b2 = 255;
if (height >= 1600) height = 1599;
t = (height-1200) / 600.0f;
}
r = (byte)(r2*t r1*(1.0f-t));
g = (byte)(g2*t g1*(1.0f-t));
b = (byte)(b2*t b1*(1.0f-t));
}
return Color::FromArgb(r, g, b);
}
protected:
/// <summary>
/// Clean up any resources being used.
/// </summary>
~MiniMap()
{
if (components)
{
delete components;
}
}
virtual void OnPaint(PaintEventArgs^ e) override
{
e->Graphics->DrawImage(this->bitmap, 0, 0, this->Width, this->Height);
}
private:
/// <summary>
/// Required designer variable.
/// </summary>
System::ComponentModel::Container ^components;
Bitmap^ bitmap;
#pragma region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
void InitializeComponent(void)
{
this->SuspendLayout();
//
// MiniMap
//
this->Name = L"MiniMap";
this->SizeChanged = gcnew System::EventHandler(this, &MiniMap::MiniMap_SizeChanged);
this->ResumeLayout(false);
}
#pragma endregion
private: System::Void MiniMap_SizeChanged(System::Object^ sender, System::EventArgs^ e) {
this->Invalidate();
}
};
} 
