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namespace FtGlSimple
{
using Tao.FtGl;
using Tao.FreeGlut;
using Tao.FreeType;
using Tao.OpenGl;
using System;
using System.Reflection;
public class FtGlSimple
{
static float[] texture = new float[]{ 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,
0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f};
private const int FTGL_BITMAP=0;
private const int FTGL_PIXMAP = 1;
private const int FTGL_OUTLINE = 2;
private const int FTGL_POLYGON = 3;
private const int FTGL_EXTRUDE = 4;
private const int FTGL_TEXTURE = 5;
private static int current_font = FTGL_EXTRUDE;
private static int w_win = 640, h_win = 480;
private enum mode_t{INTERACTIVE, EDITING};
private static mode_t mode = mode_t.INTERACTIVE;
private static string myString = "a";
static private void setUpLighting()
{
// Set up lighting.
float[] light1_ambient = new float [] { 1.0f, 1.0f, 1.0f, 1.0f };
float[] light1_diffuse = new float [] { 1.0f, 0.9f, 0.9f, 1.0f };
float[] light1_specular = new float [] { 1.0f, 0.7f, 0.7f, 1.0f };
float[] light1_position = new float [] { -1.0f, 1.0f, 1.0f, 0.0f };
Gl.glLightfv(Gl.GL_LIGHT1, Gl.GL_AMBIENT, light1_ambient);
Gl.glLightfv(Gl.GL_LIGHT1, Gl.GL_DIFFUSE, light1_diffuse);
Gl.glLightfv(Gl.GL_LIGHT1, Gl.GL_SPECULAR, light1_specular);
Gl.glLightfv(Gl.GL_LIGHT1, Gl.GL_POSITION, light1_position);
Gl.glEnable(Gl.GL_LIGHT1);
float[] light2_ambient = new float [] { 0.2f, 0.2f, 0.2f, 1.0f };
float[] light2_diffuse = new float [] { 0.9f, 0.9f, 0.9f, 1.0f };
float[] light2_specular = new float [] { 0.7f, 0.7f, 0.7f, 1.0f };
float[] light2_position = new float [] { 1.0f, -1.0f, -1.0f, 0.0f };
Gl.glLightfv(Gl.GL_LIGHT2, Gl.GL_AMBIENT, light2_ambient);
Gl.glLightfv(Gl.GL_LIGHT2, Gl.GL_DIFFUSE, light2_diffuse);
Gl.glLightfv(Gl.GL_LIGHT2, Gl.GL_SPECULAR, light2_specular);
Gl.glLightfv(Gl.GL_LIGHT2, Gl.GL_POSITION, light2_position);
//Gl.glEnable(Gl.GL_LIGHT2);
float[] front_emission = new float [] { 0.3f, 0.2f, 0.1f, 0.0f };
float[] front_ambient = new float [] { 0.2f, 0.2f, 0.2f, 0.0f };
float[] front_diffuse = new float [] { 0.95f, 0.95f, 0.8f, 0.0f };
float[] front_specular = new float [] { 0.6f, 0.6f, 0.6f, 0.0f };
Gl.glMaterialfv(Gl.GL_FRONT, Gl.GL_EMISSION, front_emission);
Gl.glMaterialfv(Gl.GL_FRONT, Gl.GL_AMBIENT, front_ambient);
Gl.glMaterialfv(Gl.GL_FRONT, Gl.GL_DIFFUSE, front_diffuse);
Gl.glMaterialfv(Gl.GL_FRONT, Gl.GL_SPECULAR, front_specular);
Gl.glMaterialf(Gl.GL_FRONT, Gl.GL_SHININESS, 16.0f);
Gl.glColor4fv(front_diffuse);
Gl.glLightModeli(Gl.GL_LIGHT_MODEL_TWO_SIDE, Gl.GL_FALSE);
Gl.glColorMaterial(Gl.GL_FRONT, Gl.GL_DIFFUSE);
Gl.glEnable(Gl.GL_COLOR_MATERIAL);
Gl.glEnable(Gl.GL_LIGHTING);
}
const string fontName = "/usr/share/fonts/truetype/ttf-dejavu/DejaVuSerif-BoldItalic.ttf";
static FtGl.FTFont[] fonts = new FtGl.FTFont[6];
static FtGl.FTFont infoFont = new FtGl.FTGLPixmapFont(fontName);
private static void setUpFonts()
{
fonts[FTGL_BITMAP] = new FtGl.FTGLBitmapFont(fontName);
fonts[FTGL_PIXMAP] = new FtGl.FTGLPixmapFont(fontName);
fonts[FTGL_OUTLINE] = new FtGl.FTGLOutlineFont(fontName);
fonts[FTGL_POLYGON] = new FtGl.FTGLPolygonFont(fontName);
fonts[FTGL_EXTRUDE] = new FtGl.FTGLExtrudeFont(fontName);
fonts[FTGL_TEXTURE] = new FtGl.FTGLTextureFont(fontName);
for( int x = 0; x < 6; ++x)
{
if( fonts[x].Error() < 0)
{
Console.WriteLine("Failed to open font {0}", fontName);
System.Environment.Exit(0);
}
if( fonts[x].FaceSize( 144) == 0)
{
Console.WriteLine("Failed to set size");
System.Environment.Exit(0);
}
fonts[x].Depth(20);
fonts[x].CharMap( FT_Encoding.FT_ENCODING_UNICODE);
}
//infoFont.FTGLPixmapFont(fontName);
if( infoFont.Error() < 0)
{
Console.WriteLine("Failed to open font {0}", fontName);
System.Environment.Exit(0);
}
infoFont.FaceSize( 18);
//myString[0] = 65;
//myString[1] = 0;
}
static private void renderFontmetrics()
{
float x1, y1, z1, x2, y2, z2;
fonts[(int)current_font].BBox( myString, out x1, out y1, out z1, out x2, out y2, out z2);
// Draw the bounding box
Gl.glDisable( Gl.GL_LIGHTING);
Gl.glDisable( Gl.GL_TEXTURE_2D);
Gl.glEnable( Gl.GL_LINE_SMOOTH);
Gl.glEnable(Gl.GL_BLEND);
Gl.glBlendFunc( Gl.GL_SRC_ALPHA, Gl.GL_ONE); // GL_ONE_MINUS_SRC_ALPHA
Gl.glColor3f( 0.0f, 1.0f, 0.0f);
// Draw the front face
Gl.glBegin( Gl.GL_LINE_LOOP);
Gl.glVertex3f( x1, y1, z1);
Gl.glVertex3f( x1, y2, z1);
Gl.glVertex3f( x2, y2, z1);
Gl.glVertex3f( x2, y1, z1);
Gl.glEnd();
// Draw the back face
if( current_font == FTGL_EXTRUDE && z1 != z2)
{
Gl.glBegin( Gl.GL_LINE_LOOP);
Gl.glVertex3f( x1, y1, z2);
Gl.glVertex3f( x1, y2, z2);
Gl.glVertex3f( x2, y2, z2);
Gl.glVertex3f( x2, y1, z2);
Gl.glEnd();
// Join the faces
Gl.glBegin( Gl.GL_LINES);
Gl.glVertex3f( x1, y1, z1);
Gl.glVertex3f( x1, y1, z2);
Gl.glVertex3f( x1, y2, z1);
Gl.glVertex3f( x1, y2, z2);
Gl.glVertex3f( x2, y2, z1);
Gl.glVertex3f( x2, y2, z2);
Gl.glVertex3f( x2, y1, z1);
Gl.glVertex3f( x2, y1, z2);
Gl.glEnd();
}
// Draw the baseline, Ascender and Descender
Gl.glBegin( Gl.GL_LINES);
Gl.glColor3f( 0.0f, 0.0f, 1.0f);
Gl.glVertex3f( 0.0f, 0.0f, 0.0f);
Gl.glVertex3f( fonts[(int)current_font].Advance( myString), 0.0f, 0.0f);
Gl.glVertex3f( 0.0f, fonts[(int)current_font].Ascender(), 0.0f);
Gl.glVertex3f( 0.0f, fonts[(int)current_font].Descender(), 0.0f);
Gl.glEnd();
// Draw the origin
Gl.glColor3f( 1.0f, 0.0f, 0.0f);
Gl.glPointSize( 5.0f);
Gl.glBegin( Gl.GL_POINTS);
Gl.glVertex3f( 0.0f, 0.0f, 0.0f);
Gl.glEnd();
}
private static void renderFontInfo()
{
Gl.glMatrixMode( Gl.GL_PROJECTION);
Gl.glLoadIdentity();
Glu.gluOrtho2D(0f, (float)w_win, 0f, (float)h_win);
Gl.glMatrixMode(Gl.GL_MODELVIEW);
Gl.glLoadIdentity();
// draw mode
Gl.glColor3f( 1.0f, 1.0f, 1.0f);
Gl.glRasterPos2f( 20.0f , h_win - ( 20.0f + infoFont.Ascender()));
switch( mode)
{
case mode_t.EDITING:
infoFont.Render("Edit Mode");
break;
case mode_t.INTERACTIVE:
break;
}
// draw font type
Gl.glRasterPos2i( 20 , 20);
switch( current_font)
{
case FTGL_BITMAP:
infoFont.Render("Bitmap Font");
break;
case FTGL_PIXMAP:
infoFont.Render("Pixmap Font");
break;
case FTGL_OUTLINE:
infoFont.Render("Outline Font");
break;
case FTGL_POLYGON:
infoFont.Render("Polygon Font");
break;
case FTGL_EXTRUDE:
infoFont.Render("Extruded Font");
break;
case FTGL_TEXTURE:
infoFont.Render("Texture Font");
break;
}
Gl.glRasterPos2f( 20.0f , 20.0f + infoFont.LineHeight());
infoFont.Render(fontName);
}
static int textureID;
private static void do_display ()
{
switch( current_font)
{
case FTGL_BITMAP:
case FTGL_PIXMAP:
case FTGL_OUTLINE:
break;
case FTGL_POLYGON:
Gl.glEnable( Gl.GL_TEXTURE_2D);
Gl.glBindTexture(Gl.GL_TEXTURE_2D, textureID);
Gl.glDisable( Gl.GL_BLEND);
setUpLighting();
break;
case FTGL_EXTRUDE:
Gl.glEnable( Gl.GL_DEPTH_TEST);
Gl.glDisable( Gl.GL_BLEND);
Gl.glEnable( Gl.GL_TEXTURE_2D);
Gl.glBindTexture(Gl.GL_TEXTURE_2D, textureID);
setUpLighting();
break;
case FTGL_TEXTURE:
Gl.glEnable( Gl.GL_TEXTURE_2D);
Gl.glDisable( Gl.GL_DEPTH_TEST);
setUpLighting();
Gl.glNormal3f( 0.0f, 0.0f, 1.0f);
break;
}
Gl.glColor3f( 1.0f, 1.0f, 1.0f);
// If you do want to switch the color of bitmaps rendered with glBitmap,
// you will need to explicitly call glRasterPos3f (or its ilk) to lock
// in a changed current color.
Gl.glPushMatrix();
fonts[(int)current_font].Render( myString);
Gl.glPopMatrix();
Gl.glPushMatrix();
renderFontmetrics();
Gl.glPopMatrix();
renderFontInfo();
}
private static void display()
{
Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);
SetCamera();
switch( current_font)
{
case FTGL_BITMAP:
case FTGL_PIXMAP:
Gl.glRasterPos2i( w_win / 2, h_win / 2);
Gl.glTranslatef( w_win / 2f, h_win / 2f, 0.0f);
break;
case FTGL_OUTLINE:
case FTGL_POLYGON:
case FTGL_EXTRUDE:
case FTGL_TEXTURE:
//tbMatrix();
break;
}
Gl.glPushMatrix();
do_display();
Gl.glPopMatrix();
Glut.glutSwapBuffers();
}
private static void mytest()
{
int cnt = fonts[0].CharMapCount();
Console.WriteLine("CharMap : {0}", cnt);
float line = fonts[0].LineHeight();
Console.WriteLine("Line Height : {0}", line);
float des = fonts[0].Descender();
Console.WriteLine("Descender : {0}", des);
float asc = fonts[0].Ascender();
Console.WriteLine("Ascender : {0}", asc);
float adv = fonts[0].Advance("Coucou");
Console.WriteLine("Advance : {0}", adv);
bool att = fonts[0].Attach("/usr/share/fonts/truetype/FreeMono.ttf");
Console.WriteLine("Attach : {0}", att);
att = fonts[0].Attach("dsadsadas", 10);
Console.WriteLine("Attach : {0}", att);
fonts[FTGL_EXTRUDE].SetDisplayList(false);
}
private static void myinit()
{
Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);
Gl.glClearColor( 0.13f, 0.17f, 0.32f, 0.0f);
Gl.glColor3f( 1.0f, 1.0f, 1.0f);
Gl.glEnable( Gl.GL_CULL_FACE);
Gl.glFrontFace( Gl.GL_CCW);
Gl.glEnable( Gl.GL_DEPTH_TEST);
Gl.glEnable(Gl.GL_CULL_FACE);
Gl.glShadeModel(Gl.GL_SMOOTH);
Gl.glEnable( Gl.GL_POLYGON_OFFSET_LINE);
Gl.glPolygonOffset( 1.0f, 1.0f); // ????
SetCamera();
//tbInit(GLUT_LEFT_BUTTON);
//tbAnimate( Gl.GL_FALSE);
setUpFonts();
Gl.glGenTextures(1, out textureID);
Gl.glBindTexture(Gl.GL_TEXTURE_2D, textureID);
Gl.glTexParameteri(Gl.GL_TEXTURE_2D, Gl.GL_TEXTURE_MAG_FILTER, Gl.GL_NEAREST);
Gl.glTexParameteri(Gl.GL_TEXTURE_2D, Gl.GL_TEXTURE_MIN_FILTER, Gl.GL_NEAREST);
Gl.glTexParameteri(Gl.GL_TEXTURE_2D, Gl.GL_TEXTURE_WRAP_S, Gl.GL_REPEAT);
Gl.glTexParameteri(Gl.GL_TEXTURE_2D, Gl.GL_TEXTURE_WRAP_T, Gl.GL_REPEAT);
Gl.glTexImage2D(Gl.GL_TEXTURE_2D, 0, Gl.GL_RGB, 4, 4, 0, Gl.GL_RGB, Gl.GL_FLOAT, texture);
}
static private void parsekey(byte key, int x, int y)
{
int k = Convert.ToInt32(key.ToString());
switch (k)
{
case 27:
for( int i = 0; i < 6; ++i)
fonts[i].Destroy();
System.Environment.Exit(0);
break;
case 13:
if( mode == mode_t.EDITING)
{
mode = mode_t.INTERACTIVE;
}
else
{
mode = mode_t.EDITING;
}
break;
case 32:
current_font++;
if((int)current_font > 5)
current_font = 0;
break;
default:
byte[] tmp = new byte[1];
tmp[0] = key;
if( mode == mode_t.INTERACTIVE)
myString = System.Text.Encoding.ASCII.GetString(tmp);
else
myString += System.Text.Encoding.ASCII.GetString(tmp);
break;
}
Glut.glutPostRedisplay();
}
static private void parseSpecialKey(int key, int x, int y)
{
switch(key)
{
case Glut.GLUT_KEY_UP:
current_font = (current_font + 1) % 6;
break;
case Glut.GLUT_KEY_DOWN:
current_font = (current_font + 5) % 6;
break;
}
}
static private void mouse(int b, int s, int x, int y)
{
//tbMouse( button, state, x, y);
}
static private void motion(int x, int y)
{
//tbMotion( x, y);
}
static private void myReshape(int w, int h)
{
Gl.glMatrixMode (Gl.GL_MODELVIEW);
Gl.glViewport (0, 0, w, h);
Gl.glLoadIdentity();
w_win = w;
h_win = h;
SetCamera();
//tbReshape(w_win, h_win);
}
static private void SetCamera()
{
switch( current_font)
{
case FTGL_BITMAP:
case FTGL_PIXMAP:
Gl.glMatrixMode( Gl.GL_PROJECTION);
Gl.glLoadIdentity();
Glu.gluOrtho2D(0, w_win, 0, h_win);
Gl.glMatrixMode(Gl.GL_MODELVIEW);
Gl.glLoadIdentity();
break;
case FTGL_OUTLINE:
case FTGL_POLYGON:
case FTGL_EXTRUDE:
case FTGL_TEXTURE:
Gl.glMatrixMode (Gl.GL_PROJECTION);
Gl.glLoadIdentity ();
Glu.gluPerspective( 90, (float)w_win / (float)h_win, 1, 1000);
Gl.glMatrixMode(Gl.GL_MODELVIEW);
Gl.glLoadIdentity();
Glu.gluLookAt( 0.0, 0.0, (float)h_win / 2.0f, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
break;
}
}
static void Main(string[] args)
{
Glut.glutInit();
Glut.glutInitDisplayMode(Glut.GLUT_DEPTH | Glut.GLUT_RGB | Glut.GLUT_DOUBLE | Glut.GLUT_MULTISAMPLE);
Glut.glutInitWindowPosition(50, 50);
Glut.glutInitWindowSize( w_win, h_win);
Glut.glutCreateWindow("FTGL TEST");
Glut.glutDisplayFunc(display);
Glut.glutKeyboardFunc(parsekey);
Glut.glutSpecialFunc(parseSpecialKey);
Glut.glutMouseFunc(mouse);
Glut.glutMotionFunc(motion);
Glut.glutReshapeFunc(myReshape);
Glut.glutIdleFunc(display);
myinit();
mytest();
Glut.glutMainLoop();
}
}
}
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