www.pudn.com > opengl_activex.zip > GLFont.cpp
// GLFont.cpp: implementation of the CGLFont class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "GLFont.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CGLFont::CGLFont()
{
m_FontType = GL_FONT_SOLID;
m_uiListID = 0;
m_dThick = 0.1;
m_dXOffset = 0.0;
m_dYOffset = 0.0;
m_dZOffset = 0.0;
m_dXScale = 1.0;
m_dYScale = 1.0;
m_dZScale = 1.0;
m_dXRotate = 0.0;
m_dYRotate = 0.0;
m_dZRotate = 0.0;
m_dMEmission[0] = 0.1;
m_dMEmission[1] = 0.1;
m_dMEmission[2] = 0.9;
m_dMEmission[3] = 1.0;
m_dMSpecular[0] = 0.9;
m_dMSpecular[1] = 0.1;
m_dMSpecular[2] = 0.1;
m_dMSpecular[3] = 1.0;
m_dMAmbient[0] = 0.1;
m_dMAmbient[1] = 0.9;
m_dMAmbient[2] = 0.1;
m_dMAmbient[3] = 1.0;
m_dMDiffuse[0] = 0.8;
m_dMDiffuse[1] = 0.8;
m_dMDiffuse[2] = 0.8;
m_dMDiffuse[3] = 1.0;
m_dMShininess = 100.0;
}
CGLFont::~CGLFont()
{
if(m_uiListID != 0)
glDeleteLists(m_uiListID, FONTLIST);
}
//////////////////////////////////////////////////////////////////////
// Set the material emission of the font
//////////////////////////////////////////////////////////////////////
void CGLFont::SetEmission(float dMEmission[4])
{
m_dMEmission[0] = dMEmission[0];
m_dMEmission[1] = dMEmission[1];
m_dMEmission[2] = dMEmission[2];
m_dMEmission[3] = dMEmission[3];
}
//////////////////////////////////////////////////////////////////////
// Get the material emission of the font
//////////////////////////////////////////////////////////////////////
void CGLFont::GetEmission(float dMEmission[4])
{
dMEmission[0] = m_dMEmission[0];
dMEmission[1] = m_dMEmission[1];
dMEmission[2] = m_dMEmission[2];
dMEmission[3] = m_dMEmission[3];
}
//////////////////////////////////////////////////////////////////////
// Set the material specular of the font
//////////////////////////////////////////////////////////////////////
void CGLFont::SetSpecular(float dMSpecular[4])
{
m_dMSpecular[0] = dMSpecular[0];
m_dMSpecular[1] = dMSpecular[1];
m_dMSpecular[2] = dMSpecular[2];
m_dMSpecular[3] = dMSpecular[3];
}
//////////////////////////////////////////////////////////////////////
// Get the material specular of the font
//////////////////////////////////////////////////////////////////////
void CGLFont::GetSpecular(float dMSpecular[4])
{
dMSpecular[0] = m_dMSpecular[0];
dMSpecular[1] = m_dMSpecular[1];
dMSpecular[2] = m_dMSpecular[2];
dMSpecular[3] = m_dMSpecular[3];
}
//////////////////////////////////////////////////////////////////////
// Set the material ambient of the font
//////////////////////////////////////////////////////////////////////
void CGLFont::SetAmbient(float dMAmbient[4])
{
m_dMAmbient[0] = dMAmbient[0];
m_dMAmbient[1] = dMAmbient[1];
m_dMAmbient[2] = dMAmbient[2];
m_dMAmbient[3] = dMAmbient[3];
}
//////////////////////////////////////////////////////////////////////
// Get the material ambient of the font
//////////////////////////////////////////////////////////////////////
void CGLFont::GetAmbient(float dMAmbient[4])
{
dMAmbient[0] = m_dMAmbient[0];
dMAmbient[1] = m_dMAmbient[1];
dMAmbient[2] = m_dMAmbient[2];
dMAmbient[3] = m_dMAmbient[3];
}
//////////////////////////////////////////////////////////////////////
// Set the material diffuse of the font
//////////////////////////////////////////////////////////////////////
void CGLFont::SetDiffuse(float dMDiffuse[4])
{
m_dMDiffuse[0] = dMDiffuse[0];
m_dMDiffuse[1] = dMDiffuse[1];
m_dMDiffuse[2] = dMDiffuse[2];
m_dMDiffuse[3] = dMDiffuse[3];
}
//////////////////////////////////////////////////////////////////////
// Get the material diffuse of the font
//////////////////////////////////////////////////////////////////////
void CGLFont::GetDiffuse(float dMDiffuse[4])
{
dMDiffuse[0] = m_dMDiffuse[0];
dMDiffuse[1] = m_dMDiffuse[1];
dMDiffuse[2] = m_dMDiffuse[2];
dMDiffuse[3] = m_dMDiffuse[3];
}
//////////////////////////////////////////////////////////////////////
// Set the material shininess of the font
//////////////////////////////////////////////////////////////////////
void CGLFont::SetShininess(float dMShininess)
{
m_dMShininess = dMShininess;
}
//////////////////////////////////////////////////////////////////////
// Get the material shininess of the font
//////////////////////////////////////////////////////////////////////
void CGLFont::GetShininess(float* dMShininess)
{
*dMShininess = m_dMShininess;
}
//////////////////////////////////////////////////////////////////////
// Create the font to display the text
//////////////////////////////////////////////////////////////////////
BOOL CGLFont::CreateFont(CDC* pDrawDC, char* fontname)
{
if(m_uiListID != 0)
glDeleteLists(m_uiListID, 1);
m_uiListID = glGenLists(FONTLIST);
if(pDrawDC == NULL || m_uiListID == 0)
{
return FALSE;
}
//Create the font to display
CFont newfont;
CFont* oldfont;
BOOL bresult;
GLYPHMETRICSFLOAT gmf[FONTLIST];
if(fontname != NULL && m_FontType != GL_FONT_BITMAP)
{
bresult = newfont.CreateFont(-12, 0, 0, 0, FW_NORMAL, 0, 0, 0, ANSI_CHARSET,
OUT_TT_ONLY_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY,
FF_DONTCARE|DEFAULT_PITCH, fontname);
//if new font failed to be created
if(!bresult)
{
return FALSE;
}
oldfont = pDrawDC->SelectObject(&newfont);
}
else
{
oldfont = (CFont*)pDrawDC->SelectStockObject(SYSTEM_FONT);
}
if(m_FontType == GL_FONT_SOLID)
{
bresult = wglUseFontOutlines(pDrawDC->m_hDC, 0, FONTLIST, m_uiListID,
0.0f, (float)m_dThick, WGL_FONT_POLYGONS, gmf);
}
else if(m_FontType == GL_FONT_LINE)
{
bresult = wglUseFontOutlines(pDrawDC->m_hDC, 0, FONTLIST, m_uiListID,
0.0f, (float)m_dThick, WGL_FONT_LINES, gmf);
}
else if(m_FontType == GL_FONT_BITMAP)
{
bresult = wglUseFontBitmaps(pDrawDC->m_hDC, 0, FONTLIST - 1, m_uiListID);
}
pDrawDC->SelectObject(oldfont);
newfont.DeleteObject();
if(!bresult)
{
return FALSE;
}
return TRUE;
}
//////////////////////////////////////////////////////////////////////
// display the text string
//////////////////////////////////////////////////////////////////////
void CGLFont::GLDrawText()
{
if (m_uiListID == 0 || m_strText.IsEmpty() ||
m_dXScale == 0.0 || m_dYScale == 0.0 ||
m_dZScale == 0.0)
{
return;
}
GLsizei size = m_strText.GetLength();
if(m_FontType == GL_FONT_BITMAP)
{
glListBase(m_uiListID);
glCallLists(size, GL_UNSIGNED_BYTE, (const GLvoid*)m_strText.GetBuffer(size));
}
else
{
glPushMatrix();
//set material mission
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, m_dMEmission);
//set material specular
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, m_dMSpecular);
//set material ambient
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, m_dMAmbient);
//set material diffuse
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, m_dMDiffuse);
//set material shininess
glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, m_dMShininess);
//Translate
glTranslated(m_dXOffset, m_dYOffset, m_dZOffset);
//Scale
glScaled(m_dXScale, m_dYScale, m_dZScale);
//Rotate around X-axis
glRotated(m_dXRotate, 1.0, 0.0, 0.0);
//Rotate around Y-axis
glRotated(m_dYRotate, 0.0, 1.0, 0.0);
//Rotate around Z-axis
glRotated(m_dZRotate, 0.0, 0.0, 1.0);
//display the letter
glListBase(m_uiListID);
glCallLists(size, GL_UNSIGNED_BYTE, (const GLvoid*)m_strText.GetBuffer(size));
//restore the original angle around Z-axis
glRotated(-1.0f * m_dZRotate, 0.0, 0.0, 1.0);
//restore the original angle around Y-axis
glRotated(-1.0f * m_dYRotate, 0.0, 1.0, 0.0);
//restore the original angle around X-axis
glRotated(-1.0f * m_dXRotate, 1.0, 0.0, 0.0);
//restore the original scale
glScaled(1.0/m_dXScale, 1.0/m_dYScale, 1.0/m_dZScale);
//restore the original position
glTranslated(-m_dXOffset, -m_dYOffset, -m_dZOffset);
glPopMatrix();
}
}