////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary> Constructor. </summary>
/// <param name="a_oEffect"> The shader program. </param>
/// <param name="a_v3Pos"> The position of the first character. </param>
/// <param name="a_v2Size"> Size of the first character. </param>
/// <param name="a_oColor"> The color. </param>
/// <param name="a_szFontDataFile"> (optional) the font data file. </param>
////////////////////////////////////////////////////////////////////////////////////////////////////
public GLFont(GLEffect a_oEffect, Vector3 a_v3Pos, Vector2 a_v2Size, Color4 a_oColor, string a_szFontDataFile, string a_szText = "")
{
// load in data:
m_oFontData = ResourceManager.Instance.LoadGLFont(a_szFontDataFile);
m_v3Position = a_v3Pos;
m_v2Size = a_v2Size;
m_szText = a_szText;
// Creat some working vars:
Vector3 v3CharPos = new Vector3();
// create quads and position them accordingly:
for (uint i = 0; i < c_uiMaxNumberOfChars; ++i)
{
// Create offseted position:
v3CharPos.X = a_v3Pos.X + i * a_v2Size.X;
v3CharPos.Y = a_v3Pos.Y;
// Create Quad and set its texture:
GLQuad oQuad = new GLQuad(a_oEffect, v3CharPos, a_v2Size, a_oColor);
oQuad.TextureID = m_oFontData.m_uiTextureID;
// add quad to the list:
m_lQuads.Add(oQuad);
}
UpdateUVCoords();
}
/// <summary> Constructor. </summary>
/// <param name="a_oEffect"> The shader program to use. </param>
/// <param name="a_v2Pos"> The position of the quad (centre). </param>
/// <param name="a_v2Size"> Size of the Quad. </param>
/// <param name="a_oColor"> The color to apply to the quad. </param>
/// <param name="a_szTexture"> (optional) the texture file. </param>
public GLQuad(GLEffect a_oEffect, Vector3 a_v3Pos, Vector2 a_v2Size, Color4 a_oColor, string a_szTexture = "")
: base()
{
// Setup Member Vars:
m_oColor = a_oColor;
m_v2Size = a_v2Size;
m_v3Position = a_v3Pos;
m_oEffect = a_oEffect;
m_m4ModelMatrix = Matrix4.Identity;
///< @todo make quads scale better, so it can scale on X or Y...
m_m4ModelMatrix = Matrix4.CreateScale(m_v2Size.X) * Matrix4.CreateTranslation(a_v3Pos); // x and y should be the same, so scale by X
if (a_szTexture != "")
{
// We can assuem we have been provided with a texture to load:
//m_uiTextureID = Helpers.ResourceManager.Instance.LoadTexture(a_szTexture);
}
else
{
m_uiTextureID = 0; // set texture to none!
}
// calculate the Y scale to X, as we are using X for our scale in our matrix.
float fYScale = 1;
if (a_v2Size.X != 0)
{
fYScale = a_v2Size.Y / a_v2Size.X;
}
//setup our quads vertcies:
m_aoVerticies = new GLVertex[4];
m_aoVerticies[0] = new GLVertex(new Vector4(-0.5f, -0.5f * fYScale, 0.0f, 1.0f), a_oColor, new Vector2(0.0f, 1.0f));
m_aoVerticies[1] = new GLVertex(new Vector4(0.5f, -0.5f * fYScale, 0.0f, 1.0f), a_oColor, new Vector2(1.0f, 1.0f));
m_aoVerticies[2] = new GLVertex(new Vector4(-0.5f, 0.5f * fYScale, 0.0f, 1.0f), a_oColor, new Vector2(0.0f, 0.0f));
m_aoVerticies[3] = new GLVertex(new Vector4(0.5f, 0.5f * fYScale, 0.0f, 1.0f), a_oColor, new Vector2(1.0f, 0.0f));
// Setup Draw order. *this apears to have no effect under GL2.X*
m_auiIndicies = new ushort[4];
m_auiIndicies[0] = 0;
m_auiIndicies[1] = 1;
m_auiIndicies[2] = 2;
m_auiIndicies[3] = 3;
// tell OpenGL about our VBOs:
GL.GenVertexArrays(1, out m_uiVextexArrayHandle); // Generate Our Vertex Array and get the handle to it.
GL.BindVertexArray(m_uiVextexArrayHandle); // Lets OpenGL that this is the current "active" vertex array.
//#if DEBUG
// logger.Info("OpenGL Generate VAO: " + GL.GetError().ToString());
//#endif
GL.GenBuffers(1, out m_uiVertexBufferHandle); // Generate our Vertex Buffer Object and get the handle to it.
GL.BindBuffer(BufferTarget.ArrayBuffer, m_uiVertexBufferHandle); // Lets Open GL know that this is the current active buffer object.
GL.BufferData <GLVertex>(BufferTarget.ArrayBuffer, new IntPtr(m_aoVerticies.Length * GLVertex.SizeInBytes()), m_aoVerticies, BufferUsageHint.StaticDraw); // tells OpenGL about the structure of the data.
//#if DEBUG
// logger.Info("OpenGL Generate VBO: " + GL.GetError().ToString());
//#endif
GL.GenBuffers(1, out m_uiIndexBufferHandle); //Generate Our index Buffer and get handle to it.
GL.BindBuffer(BufferTarget.ElementArrayBuffer, m_uiIndexBufferHandle); // Lets Open GL know that this is the current active buffer object.
GL.BufferData(BufferTarget.ElementArrayBuffer, new IntPtr(m_auiIndicies.Length * sizeof(ushort)), m_auiIndicies, BufferUsageHint.StaticDraw); // Tells OpenGL how the data is structured.
//#if DEBUG
// logger.Info("OpenGL Generate EBO: " + GL.GetError().ToString());
//#endif
GL.BindBuffer(BufferTarget.ArrayBuffer, m_uiVertexBufferHandle); // Switch back to our Buffer Object as the current buffer.
GL.VertexAttribPointer(0, 4, VertexAttribPointerType.Float, false, GLVertex.SizeInBytes(), 0); // Tells OpenGL about the first three doubles in the vbo, i.e the position of the vertex.
GL.VertexAttribPointer(1, 4, VertexAttribPointerType.Float, true, GLVertex.SizeInBytes(), Vector4.SizeInBytes); // tells OpenGL about the 4 half floats used to repesent color.
GL.VertexAttribPointer(2, 2, VertexAttribPointerType.Float, false, GLVertex.SizeInBytes(), (Vector4.SizeInBytes + Vector4.SizeInBytes)); // tells OpenGL about the 2 floats in the vertgexc used to repesent UV coords.
//#if DEBUG
// logger.Info("OpenGL Create Vertes Attribute Pointers: " + GL.GetError().ToString());
//#endif
// Turn on the Vertex Attribs:
GL.EnableVertexAttribArray(0);
GL.EnableVertexAttribArray(1);
GL.EnableVertexAttribArray(2);
// #if DEBUG
// logger.Info("OpenGL Create Quad Primitive: " + GL.GetError().ToString());
//#endif
}
