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OpenGLtest.cs
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OpenGLtest.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using OpenTK;
using OpenTK.Graphics.OpenGL;
using System.Drawing.Imaging;
using System.Drawing;
using GMap.NET;
using GMap.NET.WindowsForms;
namespace ArdupilotMega.Controls
{
public class OpenGLtest : GLControl
{
public static OpenGLtest instance;
// terrain image
Bitmap _terrain = new Bitmap(640,480);
int texture = 0;
float _angle = 0;
double cameraX, cameraY, cameraZ; // camera coordinates
double lookX, lookY, lookZ; // camera look-at coordinates
double step = 1 / 1200.0;
// image zoom level
int zoom = 11;
RectLatLng area = new RectLatLng(-35.04286,117.84262,0.1,0.1);
double _alt = 0;
public PointLatLngAlt LocationCenter {
get {
return new PointLatLngAlt(area.LocationMiddle.Lat, area.LocationMiddle.Lng,_alt,"");
}
set {
if (area.LocationMiddle.Lat == value.Lat && area.LocationMiddle.Lng == value.Lng)
return;
if (value.Lat == 0 && value.Lng == 0)
return;
_alt = value.Alt;
area = new RectLatLng(value.Lat + 0.15, value.Lng - 0.15, 0.3, 0.3);
// Console.WriteLine(area.LocationMiddle + " " + value.ToString());
this.Invalidate();
}
}
public Vector3 rpy = new Vector3();
public OpenGLtest()
{
instance = this;
InitializeComponent();
GL.GenTextures(1, out texture);
}
void getImage()
{
MapType type = MapType.GoogleSatellite;
PureProjection prj = null;
int maxZoom;
GMaps.Instance.AdjustProjection(type, ref prj, out maxZoom);
//int zoom = 14; // 12
if (!area.IsEmpty)
{
try
{
List<GPoint> tileArea = prj.GetAreaTileList(area, zoom, 0);
//string bigImage = zoom + "-" + type + "-vilnius.png";
//Console.WriteLine("Preparing: " + bigImage);
//Console.WriteLine("Zoom: " + zoom);
//Console.WriteLine("Type: " + type.ToString());
//Console.WriteLine("Area: " + area);
var types = GMaps.Instance.GetAllLayersOfType(type);
// current area
GPoint topLeftPx = prj.FromLatLngToPixel(area.LocationTopLeft, zoom);
GPoint rightButtomPx = prj.FromLatLngToPixel(area.Bottom, area.Right, zoom);
GPoint pxDelta = new GPoint(rightButtomPx.X - topLeftPx.X, rightButtomPx.Y - topLeftPx.Y);
DateTime startimage = DateTime.Now;
int padding = 0;
{
using (Bitmap bmpDestination = new Bitmap(pxDelta.X + padding * 2, pxDelta.Y + padding * 2))
{
using (Graphics gfx = Graphics.FromImage(bmpDestination))
{
gfx.CompositingMode = System.Drawing.Drawing2D.CompositingMode.SourceOver;
// get tiles & combine into one
foreach (var p in tileArea)
{
Console.WriteLine("Downloading[" + p + "]: " + tileArea.IndexOf(p) + " of " + tileArea.Count);
foreach (MapType tp in types)
{
Exception ex;
WindowsFormsImage tile = GMaps.Instance.GetImageFrom(tp, p, zoom, out ex) as WindowsFormsImage;
if (tile != null)
{
using (tile)
{
int x = p.X * prj.TileSize.Width - topLeftPx.X + padding;
int y = p.Y * prj.TileSize.Width - topLeftPx.Y + padding;
{
gfx.DrawImage(tile.Img, x, y, prj.TileSize.Width, prj.TileSize.Height);
}
}
}
}
if ((DateTime.Now - startimage).TotalMilliseconds > 200)
break;
}
}
_terrain = new Bitmap(bmpDestination, 512, 512);
GL.BindTexture(TextureTarget.Texture2D, texture);
BitmapData data = _terrain.LockBits(new System.Drawing.Rectangle(0, 0, _terrain.Width, _terrain.Height),
ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
//Console.WriteLine("w {0} h {1}",data.Width, data.Height);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, data.Width, data.Height, 0,
OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);
_terrain.UnlockBits(data);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
}
}
if ((DateTime.Now - startimage).TotalMilliseconds > 200)
{
zoom--;
}
else
{
//zoom++;
}
}
catch { }
}
}
const float rad2deg = (float)(180 / Math.PI);
const float deg2rad = (float)(1.0 / rad2deg);
public Vector3 Normal(Vector3 a, Vector3 b, Vector3 c)
{
var dir = Vector3.Cross(b - a, c - a);
var norm = Vector3.Normalize(dir);
return norm;
}
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
if (this.DesignMode)
return;
if (area.LocationMiddle.Lat == 0 && area.LocationMiddle.Lng == 0)
return;
_angle+=1f;
// area.LocationTopLeft = new PointLatLng(area.LocationTopLeft.Lat + 0.0001,area.LocationTopLeft.Lng);
//area.Size = new SizeLatLng(0.1, 0.1);
try
{
base.OnPaint(e);
}
catch { return; }
double heightscale = (step / 90.0) * 1;
float scale = 1.0f;
float radians = (float)(Math.PI * (rpy.Z * -1) / 180.0f);
//radians = 0;
float mouseY = (float)(0.1 * scale);
cameraX = area.LocationMiddle.Lng; // multiplying by mouseY makes the
cameraZ = area.LocationMiddle.Lat; // camera get closer/farther away with mouseY
cameraY = (LocationCenter.Alt < srtm.getAltitude(cameraZ, cameraX, 20)) ? (srtm.getAltitude(cameraZ, cameraX, 20)+ 0.2) * heightscale : LocationCenter.Alt * heightscale;// (srtm.getAltitude(lookZ, lookX, 20) + 100) * heighscale;
lookX = area.LocationMiddle.Lng + Math.Sin(radians) * mouseY; ;
lookY = cameraY;
lookZ = area.LocationMiddle.Lat + Math.Cos(radians) * mouseY; ;
MakeCurrent();
GL.MatrixMode(MatrixMode.Projection);
OpenTK.Matrix4 projection = OpenTK.Matrix4.CreatePerspectiveFieldOfView(60 * deg2rad, 1f, 0.00001f, 5000.0f);
GL.LoadMatrix(ref projection);
Matrix4 modelview = Matrix4.LookAt((float)cameraX, (float)cameraY, (float)cameraZ, (float)lookX, (float)lookY, (float)lookZ, 0,1,0);
GL.MatrixMode(MatrixMode.Modelview);
// roll
modelview = Matrix4.Mult(modelview,Matrix4.CreateRotationZ (rpy.X * deg2rad));
// pitch
modelview = Matrix4.Mult(modelview, Matrix4.CreateRotationX(rpy.Y * -deg2rad));
GL.LoadMatrix(ref modelview);
GL.ClearColor(Color.Blue);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.LightModel(LightModelParameter.LightModelAmbient,new float[] {1f,1f,1f,1f});
GL.Enable(EnableCap.Texture2D);
GL.BindTexture(TextureTarget.Texture2D, texture);
/*
GL.Begin(BeginMode.LineStrip);
GL.Color3(Color.White);
GL.Vertex3(0, 0, 0);
GL.Vertex3(area.Bottom, 0, area.Left);
GL.Vertex3(lookX, lookY, lookZ);
//GL.Vertex3(cameraX, cameraY, cameraZ);
GL.End();
*/
System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
sw.Start();
zoom = 11;
getImage();
sw.Stop();
Console.WriteLine("img " +sw.ElapsedMilliseconds);
sw.Start();
double increment = step *5;
double cleanup = area.Bottom % increment;
double cleanup2 = area.Left % increment;
for (double z = (area.Bottom - cleanup); z < area.Top - step; z += increment)
{
//Makes OpenGL draw a triangle at every three consecutive vertices
GL.Begin(BeginMode.TriangleStrip);
for (double x = (area.Left - cleanup2); x < area.Right - step; x += increment)
{
int heightl = srtm.getAltitude(z, area.Right + area.Left - x, 20);
// Console.WriteLine(x + " " + z);
GL.Color3(Color.White);
// int heightl = 0;
double scale2 = (Math.Abs(x - area.Left) / area.WidthLng);// / (float)_terrain.Width;
double scale3 = (Math.Abs(z - area.Bottom) / area.HeightLat);// / (float)_terrain.Height;
double imgx = 1 - scale2;
double imgy = 1 - scale3;
// GL.Color3(Color.Red);
//GL.Color3(_terrain.GetPixel(imgx, imgy));
GL.TexCoord2(imgx,imgy);
GL.Vertex3(x, heightl * heightscale, z); // _terrain.GetPixel(x, z).R
try
{
heightl = srtm.getAltitude(z + increment, area.Right + area.Left - x, 20);
//scale2 = (Math.Abs(x - area.Left) / area.WidthLng) * (float)_terrain.Width;
scale3 = (Math.Abs(((z + increment) - area.Bottom)) / area.HeightLat);// / (float)_terrain.Height;
imgx = 1- scale2;
imgy = 1 - scale3;
// GL.Color3(Color.Green);
//GL.Color3(_terrain.GetPixel(imgx, imgy));
GL.TexCoord2(imgx,imgy);
GL.Vertex3(x, heightl * heightscale, z + increment);
// Console.WriteLine(x + " " + (z + step));
}
catch { break; }
}
GL.End();
}
GL.Enable(EnableCap.Blend);
GL.DepthMask(false);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.One);
GL.DepthMask(true);
GL.Disable(EnableCap.Blend);
GL.Flush();
sw.Stop();
Console.WriteLine("GL "+sw.ElapsedMilliseconds);
this.SwapBuffers();
Context.MakeCurrent(null);
//this.Invalidate();
}
private void InitializeComponent()
{
this.SuspendLayout();
//
// OpenGLtest
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.Name = "OpenGLtest";
this.Load += new System.EventHandler(this.test_Load);
this.Resize += new System.EventHandler(this.test_Resize);
this.ResumeLayout(false);
}
private void test_Load(object sender, EventArgs e)
{
GL.Enable(EnableCap.DepthTest);
// GL.Enable(EnableCap.Light0);
GL.Enable(EnableCap.Lighting);
GL.Enable(EnableCap.ColorMaterial);
GL.Enable(EnableCap.Normalize);
//GL.Enable(EnableCap.LineSmooth);
//GL.Enable(EnableCap.PointSmooth);
//GL.Enable(EnableCap.PolygonSmooth);
GL.ShadeModel(ShadingModel.Smooth);
GL.Enable(EnableCap.CullFace);
GL.Enable(EnableCap.Texture2D);
}
private void test_Resize(object sender, EventArgs e)
{
MakeCurrent();
GL.Viewport(0, 0, this.Width, this.Height);
this.Invalidate();
}
}
}