private void glCanvas1_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == 'b')
{
BlendingSourceFactor source;
BlendingDestinationFactor dest;
this.blendFactorHelper.GetNext(out source, out dest);
this.glText.BlendSwitch.SourceFactor = source;
this.glText.BlendSwitch.DestFactor = dest;
this.UpdateLabel();
}
else if (e.KeyChar == 'o')
{
if (this.openTextureDlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
string ttfFilename = this.openTextureDlg.FileName;
this.glText.Dispose();
FontResource fontResouce = FontResource.Load(ttfFilename, ' ', (char)126);
var glText = new GLText(AnchorStyles.Left | AnchorStyles.Top,
new Padding(3, 3, 3, 3), new Size(850, 50), -100, 100, fontResouce);
glText.Initialize();
glText.SwitchList.Add(new ClearColorSwitch());// show black back color to indicate glText's area.
glText.SetText("The quick brown fox jumps over the lazy dog!");
this.glText = glText;
uiRoot.Controls.Add(glText);
this.formPropertyGrid.DisplayObject(glText);
}
}
}
private void numericUpDown1_ValueChanged(object sender, EventArgs e)
{
mainfont.space = (float)numericUpDown1.Value;
GLText t = tobs[0];
tobs.RemoveAt(0);
tobs.Add(mainfont.renderText(t.text, t.pos, t.scale));
glControl1.Invalidate();
}
private void Form02OrderIndependentTransparency_Load(object sender, EventArgs e)
{
{
var camera = new Camera(CameraType.Perspecitive, this.glCanvas1.Width, this.glCanvas1.Height);
camera.Position = new vec3(0, 0, 1);
camera.Target = new vec3(0, 0, 0);
camera.UpVector = new vec3(0, 1, 0);
var rotator = new SatelliteRotator(camera);
this.camera = camera;
this.rotator = rotator;
}
{
var UIRoot = new GLControl(this.glCanvas1.Size, -100, 100);
UIRoot.Initialize();
this.uiRoot = UIRoot;
var glAxis = new GLAxis(AnchorStyles.Right | AnchorStyles.Bottom,
new Padding(3, 3, 3, 3), new Size(70, 70), -100, 100);
glAxis.Initialize();
this.glAxis = glAxis;
UIRoot.Controls.Add(glAxis);
var glText = new GLText(AnchorStyles.Left | AnchorStyles.Top,
new Padding(3, 3, 3, 3), new Size(500, 50), -100, 100);
glText.Initialize();
glText.SwitchList.Add(new ClearColorSwitch());// show black back color to indicate glText's area.
glText.SetText("The quick brown fox jumps over the lazy dog!");
this.glText = glText;
uiRoot.Controls.Add(glText);
this.UpdateLabel();
}
{
var frmPropertyGrid = new FormProperyGrid();
frmPropertyGrid.DisplayObject(this.glText);
frmPropertyGrid.Show();
this.formPropertyGrid = frmPropertyGrid;
}
}
public GLText renderText(string text, Vector2 pos, float scale)
{
/*
* THIS FUNCTION WILL IMPLEMENT TEXT RENDERING
*
*/
float space = this.space;
float width = this.width;
float height = this.height;
//Check if font exists
if (this == null)
{
return(null);
}
//Create text objects
GLText gtex = new GLText();
//Save text
gtex.text = text;
gtex.pos = pos;
gtex.scale = scale;
//Load Image & Program
gtex.GLImage = tex;
gtex.program = program;
//Allocate arrays
gtex.pints = new int[text.Length * 6];
gtex.puvs = new float[text.Length * 6 * 2];
gtex.pverts = new float[text.Length * 6 * 3];
//Construct float arrays
float startx = 0.0f;
float startid = 0;
for (int i = 0; i < text.Length; i++)
{
char c = text[i];
Glyph glph = this.char_dict[c];
//Store a quad for every char
//Handle positions
// 0
gtex.pverts[6 * 3 * i + 0] = i * space + 0.0f;
gtex.pverts[6 * 3 * i + 1] = height;
gtex.pverts[6 * 3 * i + 2] = 0.2f;
// 1
gtex.pverts[6 * 3 * i + 3] = i * space + 0.0f;
gtex.pverts[6 * 3 * i + 4] = 0.0f;
gtex.pverts[6 * 3 * i + 5] = 0.2f;
// 2
gtex.pverts[6 * 3 * i + 6] = i * space + width;
gtex.pverts[6 * 3 * i + 7] = height;
gtex.pverts[6 * 3 * i + 8] = 0.2f;
// 3
gtex.pverts[6 * 3 * i + 9] = i * space + width;
gtex.pverts[6 * 3 * i + 10] = height;
gtex.pverts[6 * 3 * i + 11] = 0.2f;
// 4
gtex.pverts[6 * 3 * i + 12] = i * space + 0.0f;
gtex.pverts[6 * 3 * i + 13] = 0.0f;
gtex.pverts[6 * 3 * i + 14] = 0.2f;
// 5
gtex.pverts[6 * 3 * i + 15] = i * space + width;
gtex.pverts[6 * 3 * i + 16] = 0.0f;
gtex.pverts[6 * 3 * i + 17] = 0.2f;
//Handle Indices
gtex.pints[6 * i + 0] = 4 * i + 0;
gtex.pints[6 * i + 1] = 4 * i + 1;
gtex.pints[6 * i + 2] = 4 * i + 2;
gtex.pints[6 * i + 3] = 4 * i + 3;
gtex.pints[6 * i + 4] = 4 * i + 4;
gtex.pints[6 * i + 5] = 4 * i + 5;
//Handle Uvs
//0
gtex.puvs[6 * 2 * i + 0] = glph.pos[0].X;
gtex.puvs[6 * 2 * i + 1] = glph.pos[0].Y;
//1
gtex.puvs[6 * 2 * i + 2] = glph.pos[0].X;
gtex.puvs[6 * 2 * i + 3] = glph.pos[1].Y;
//2
gtex.puvs[6 * 2 * i + 4] = glph.pos[1].X;
gtex.puvs[6 * 2 * i + 5] = glph.pos[0].Y;
//3
gtex.puvs[6 * 2 * i + 6] = glph.pos[1].X;
gtex.puvs[6 * 2 * i + 7] = glph.pos[0].Y;
//4
gtex.puvs[6 * 2 * i + 8] = glph.pos[0].X;
gtex.puvs[6 * 2 * i + 9] = glph.pos[1].Y;
//5
gtex.puvs[6 * 2 * i + 10] = glph.pos[1].X;
gtex.puvs[6 * 2 * i + 11] = glph.pos[1].Y;
}
//Create OpenGL buffers
//Generate Geometry VBOs
GL.GenBuffers(1, out gtex.vbo);
GL.GenBuffers(1, out gtex.ebo);
GL.GenBuffers(1, out gtex.uvbo);
//Vertex Buffer
int vsize = sizeof(float) * gtex.pverts.Length;
//Upload vertex buffer
GL.BindBuffer(BufferTarget.ArrayBuffer, gtex.vbo);
//Allocate to NULL
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(vsize), (IntPtr)null, BufferUsageHint.StaticDraw);
//Add verts data
GL.BufferSubData(BufferTarget.ArrayBuffer, (IntPtr)0, (IntPtr)vsize, gtex.pverts);
//UV Buffer
int uvsize = sizeof(float) * gtex.puvs.Length;
//Upload uv buffer
GL.BindBuffer(BufferTarget.ArrayBuffer, gtex.uvbo);
//Allocate to NULL
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(uvsize), (IntPtr)null, BufferUsageHint.StaticDraw);
//Add verts data
GL.BufferSubData(BufferTarget.ArrayBuffer, (IntPtr)0, (IntPtr)uvsize, gtex.puvs);
//Upload index buffer
GL.BindBuffer(BufferTarget.ElementArrayBuffer, gtex.ebo);
GL.BufferData(BufferTarget.ElementArrayBuffer, (IntPtr)(sizeof(int) * gtex.pints.Length), gtex.pints, BufferUsageHint.StaticDraw);
//Store text object
return(gtex);
}
