/// <summary>
/// This utility function allocates memory for the pointer outData and creates a TGA image from the specified pixel data.
/// The dimensions of the image have to be specified as well as the bit depth of the pixel data.
/// The created TGA-image-data can be used as Texture2D or TexureCube resource in the engine.
/// </summary>
/// <remarks>
/// The memory allocated by this routine will be freed automatically.
/// </remarks>
/// <param name="pixels">pointer to pixel source data from which TGA-image-data is constructed; memory layout: pixel with position (x, y) in image (origin of image is upper left corner) has memory location (y * width + x) * (bpp / 8) in pixels array</param>
/// <param name="width">image width of source data</param>
/// <param name="height">image height of source data</param>
/// <param name="bpp">color bit depth of source data (Valid: 24, 32)</param>
/// <param name="outData">the created TGA data</param>
/// <param name="outSize">size of TGA data</param>
/// <returns>true in case of success, otherwise false</returns>
public static bool createTGAImage(byte[] pixels, int width, int height, int bpp, out byte[] outData, out int outSize)
{
IntPtr pixelPtr, dataPtr;
uint size;
// Allocate data to store pixel content
pixelPtr = Marshal.AllocHGlobal(pixels.Length);
// Copy pixel content to memory location
Marshal.Copy(pixels, 0, pixelPtr, pixels.Length);
// create TGA Image
bool result = NativeMethodsUtils.createTGAImage(pixelPtr, (uint)width, (uint)height, (uint)bpp, out dataPtr, out size);
// free allocated memory
Marshal.FreeHGlobal(pixelPtr);
// set size of TGA data
outSize = (int)size;
// create new array for TGA data
outData = new byte[outSize];
// copy TGA data from memory into data array
Marshal.Copy(dataPtr, outData, 0, outSize);
// free allocated memory for TGA data
//NativeMethodsUtils.freeMem(dataPtr);
return(result);
}
/// <summary>
/// This utility function loads previously added and still unloaded resources from a specified directory on a data drive.
/// All resource names are directly converted to filenames when being loaded.
/// </summary>
/// <param name="contenDir">directory where data is located on the drive</param>
/// <returns>false if at least one resource could not be loaded, otherwise true</returns>
public static bool loadResourcesFromDisk(string contenDir)
{
if (contenDir == null)
{
throw new ArgumentNullException("contenDir", Resources.StringNullExceptionString);
}
return(NativeMethodsUtils.loadResourcesFromDisk(contenDir));
}
/// <summary>
/// This utility function uses overlays to display a text string at a specified position on the screen.
/// </summary>
/// <remarks>
/// The font texture of the specified font material has to be a regular 16x16 grid containing all ASCII characters in row-major order.
/// The layer corresponds to the layer parameter of overlays.
/// </remarks>
/// <param name="text">text string to be displayed</param>
/// <param name="x">x position of the lower left corner of the first character; for more details on coordinate system see overlay documentation</param>
/// <param name="y">y position of the lower left corner of the first character; for more details on coordinate system see overlay documentation</param>
/// <param name="size">size factor of the font</param>
/// <param name="layer">layer index of the font overlays (values: 0-7)</param>
/// <param name="fontMatRes">font material resource used for rendering</param>
public static void showText(string text, float x, float y, float size,
int layer, int fontMatRes)
{
if (text == null)
{
throw new ArgumentNullException("text", Resources.StringNullExceptionString);
}
if (layer < 0)
{
throw new ArgumentOutOfRangeException("layer", Resources.UIntOutOfRangeExceptionString);
}
if (fontMatRes < 0)
{
throw new ArgumentOutOfRangeException("fontMatRes", Resources.UIntOutOfRangeExceptionString);
}
NativeMethodsUtils.showText(text, x, y, size, (uint)layer, (uint)fontMatRes);
}
/// <summary>
/// This utility function pops all messages from the message queue and writes them to a HTML formated log file 'EngineLog.html'.
/// </summary>
/// <returns>true in case of success, otherwise false</returns>
public static bool dumpMessages()
{
return(NativeMethodsUtils.dumpMessages());
}
/// <summary>
/// This utility function displays the image rendered to the previously initialized OpenGL context on the screen by copying the OpenGL backbuffer to the window front buffer.
/// </summary>
public static void swapBuffers()
{
NativeMethodsUtils.swapBuffers();
}
/// <summary>
/// This utility function destroys the previously created OpenGL rendering context.
/// </summary>
public static void releaseOpenGL()
{
NativeMethodsUtils.releaseOpenGL();
}
// Utilities functions
/// <summary>
/// This utility function initializes an OpenGL rendering context in a specified window component.
/// </summary>
/// <param name="hDC">handle to device context for which OpenGL context shall be created</param>
/// <returns>true in case of success, otherwise false</returns>
public static bool initOpenGL(int hDC)
{
return(NativeMethodsUtils.initOpenGL(hDC));
}
/// <summary>
/// This utility function takes normalized window coordinates (ranging from 0 to 1 with the origin being the bottom left corner of the window) and returns the scene node which is visible at that location. The function is especially useful for selecting objects by clicking on them. Currently picking is only working for Meshes.
/// </summary>
/// <param name="nwx">normalized window x coordinate</param>
/// <param name="nwy">normalized window y coordinate</param>
/// <returns>handle of picked node or 0 if no node was hit</returns>
public static uint pickNode(float nwx, float nwy)
{
return(NativeMethodsUtils.pickNode(nwx, nwy));
}
