// ----------------------------------------------------- console_add_glyph ---
void
console_add_glyph( console_t *self,
wchar_t current,
wchar_t previous,
markup_t *markup )
{
texture_glyph_t *glyph = texture_font_get_glyph( markup->font, current );
if( previous != L'\0' )
{
self->pen.x += texture_glyph_get_kerning( glyph, previous );
}
float r = markup->foreground_color.r;
float g = markup->foreground_color.g;
float b = markup->foreground_color.b;
float a = markup->foreground_color.a;
int x0 = self->pen.x + glyph->offset_x;
int y0 = self->pen.y + glyph->offset_y;
int x1 = x0 + glyph->width;
int y1 = y0 - glyph->height;
float s0 = glyph->s0;
float t0 = glyph->t0;
float s1 = glyph->s1;
float t1 = glyph->t1;
GLuint indices[] = {0,1,2, 0,2,3};
vertex_t vertices[] = { { x0,y0,0, s0,t0, r,g,b,a },
{ x0,y1,0, s0,t1, r,g,b,a },
{ x1,y1,0, s1,t1, r,g,b,a },
{ x1,y0,0, s1,t0, r,g,b,a } };
vertex_buffer_push_back( self->buffer, vertices, 4, indices, 6 );
self->pen.x += glyph->advance_x;
self->pen.y += glyph->advance_y;
}
// --------------------------------------------------------------- add_text ---
void add_text( vertex_buffer_t * buffer, texture_font_t * font,
wchar_t * text, vec4 * color, vec2 * pen )
{
size_t i;
float r = color->red, g = color->green, b = color->blue, a = color->alpha;
for( i=0; i<wcslen(text); ++i )
{
texture_glyph_t *glyph = texture_font_get_glyph( font, text[i] );
if( glyph != NULL )
{
int kerning = 0;
if( i > 0)
{
kerning = texture_glyph_get_kerning( glyph, text[i-1] );
}
pen->x += kerning;
int x0 = (int)( pen->x + glyph->offset_x );
int y0 = (int)( pen->y + glyph->offset_y );
int x1 = (int)( x0 + glyph->width );
int y1 = (int)( y0 - glyph->height );
float s0 = glyph->s0;
float t0 = glyph->t0;
float s1 = glyph->s1;
float t1 = glyph->t1;
GLuint indices[] = {0,1,2,0,2,3};
vertex_t vertices[] = { { x0,y0,0, s0,t0, r,g,b,a },
{ x0,y1,0, s0,t1, r,g,b,a },
{ x1,y1,0, s1,t1, r,g,b,a },
{ x1,y0,0, s1,t0, r,g,b,a } };
vertex_buffer_push_back( buffer, vertices, 4, indices, 6 );
pen->x += glyph->advance_x;
}
}
}
Vector2 Render::GetTextSize(const Font& font, const std::string& text) {
float totalW = 0;
float totalH = 0;
float cx = 0;
float cy = 0;
unsigned long len = text.size();
for (unsigned long i = 0; i < len; i++) {
char l = text[i];
texture_glyph_t* glyph = texture_font_get_glyph(font.FontHandle, (wchar_t)text[i]);
if (glyph == null) {
TL_ASSERT(false);
return Vector2::Zero;
}
if (i > 0) {
cx += texture_glyph_get_kerning(glyph, text[i - 1]);
}
if (l == '\n') {
cy += font.FontHandle->height;
cx = 0;
continue;
}
cx += glyph->advance_x;
if (cx > totalW) totalW = cx;
if (cy + font.FontHandle->height > totalH) totalH = cy + font.FontHandle->height;
}
return Vector2(totalW, totalH);
}
void add_text( vertex_buffer_t * buffer, texture_font_t * font,
char* fileBuffer, int bufferSizeBytes,
const char* text, vec2 * pen, int currentSize )
{
vec2 startPos = *pen;
size_t length = strlen(text);
Color vertColor = Color::White;
for(size_t i=0; i < length; ++i)
{
if(text[i] == '\n')
{
pen->x = startPos.x;
pen->y -= currentSize;
continue;
}
if(text[i] == '<')
{
if(i + 1 < length && text[i + 1] == '#')
{
vertColor = ParseColor(text, i);
i += 11;
}
}
float r = vertColor.r;
float g = vertColor.g;
float b = vertColor.b;
float a = vertColor.a;
texture_glyph_t *glyph = texture_font_get_glyph( font, fileBuffer, bufferSizeBytes, text[i] );
if( glyph != NULL )
{
float kerning = 0;
if( i > 0)
{
kerning = texture_glyph_get_kerning( glyph, text[i-1] );
}
pen->x += kerning;
int x0 = (int)( pen->x + glyph->offset_x );
int y0 = (int)( pen->y + glyph->offset_y );
int x1 = (int)( x0 + glyph->width );
int y1 = (int)( y0 - glyph->height );
float s0 = glyph->s0;
float t0 = glyph->t0;
float s1 = glyph->s1;
float t1 = glyph->t1;
GLuint indices[6] = {0,1,2, 0,2,3};
vertex_t vertices[4] = {
{(float)x0, (float)y0, 1.0f, s0, t0, r, g, b, a},
{(float)x0, (float)y1, 1.0f, s0, t1, r, g, b, a},
{(float)x1, (float)y1, 1.0f, s1, t1, r, g, b, a},
{(float)x1, (float)y0, 1.0f, s1, t0, r, g, b, a} };
vertex_buffer_push_back( buffer, vertices, 4, indices, 6 );
pen->x += glyph->advance_x;
}
}
}
void FontRenderer::RenderText(unsigned int x, unsigned int y, const char* pText)
{
bool IsCullEnabled = glIsEnabled(GL_CULL_FACE);
glDisable(GL_CULL_FACE);
assert(strlen(pText) < MAX_STRING_LEN);
wchar_t text[MAX_STRING_LEN] = { 0 };
int len = mbstowcs(text, pText, strlen(pText));
assert(len > 0);
vertex_buffer_clear( m_pTextBuffer );
TextureGlyph* pGlyph = texture_font_get_glyph( m_pFont, text[0] );
assert(pGlyph);
Pen pen = {(float)x, (float)y};
texture_glyph_add_to_vertex_buffer( pGlyph, m_pTextBuffer, &markup, &pen, 0 );
for( size_t i=1; i<wcslen(text); ++i )
{
pGlyph = texture_font_get_glyph( m_pFont, text[i] );
assert(pGlyph);
int kerning = texture_glyph_get_kerning( pGlyph, text[i-1] );
texture_glyph_add_to_vertex_buffer( pGlyph, m_pTextBuffer, &markup, &pen, kerning );
}
glActiveTexture(GL_TEXTURE0);
glBindTexture( GL_TEXTURE_2D, m_pManager->atlas->texid );
m_fontShader.Enable();
int viewport[4];
glGetIntegerv( GL_VIEWPORT, viewport );
float xScale = 2.0f / (float)viewport[2];
float yScale = 2.0f / (float)viewport[3];
GLfloat Trans[] = { xScale, 0.0f, 0.0f, -1.0f,
0.0f, yScale, 0.0f, -1.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f };
m_fontShader.SetTransformation(Trans);
vertex_buffer_render( m_pTextBuffer, GL_TRIANGLES, "vtc" );
if (IsCullEnabled) {
glEnable(GL_CULL_FACE);
}
}
/**
* @text
* @floatarray [advance,kerning...]
* @start optional
* @end optional
*/
METHOD_BEGIN(measure, info) {
HandleScope scope;
Font* font = internalPtr<Font>(info, CLASS_Font);
if(font == 0) {
return;
}
// text
v8::Local<v8::String> tmp = info[0]->ToString();
int length = tmp->Length();
uint16_t uchars[length + 1];
tmp->Write(uchars);
// Float32Array
ClassBase* ptr = internalArg<ClassBase>(info[1], CLASS_Float32Array);
if(ptr == 0) {
ThrowException(String::New("Font.measure Float32Array not found"));
return;
}
ByteBuffer buf;
ptr->getUnderlying(&buf);
// start and end
int start = 0;
int end = length;
if(info.Length() >= 3) {
start = info[2]->Uint32Value();
}
if(info.Length() >= 4) {
end = info[3]->Uint32Value();
}
// setup
for(int i = start; i < end; i++) {
texture_glyph_t *glyph = texture_font_get_glyph(font->font, uchars[i] );
if(glyph != NULL) {
if(i > 0) {
float values[2] = { glyph->advance_x, texture_glyph_get_kerning(glyph, uchars[i - 1]) };
buf.set_value<float>((i - start) * 2, values, 2);
} else {
float values[2] = { glyph->advance_x, 0 };
buf.set_value<float>((i - start) * 2, values, 2);
}
} else {
float values[2] = { 0, 0 };
buf.set_value<float>((i - start) * 2, values, 2);
}
}
}
void FontBufferCache::Add(const std::string &text, const Point3 &position, const GameColor &color, texture_font_t *font)
{
HashedString hash(text.c_str());
vertex_buffer_t *buffer = 0;
if(Contains(text)) {
buffer = m_vertexBufferMap.find(hash.getHashValue())->second;
vertex_buffer_clear(buffer);
} else {
buffer = vertex_buffer_new("vertex:3f,tex_coord:2f,color:4f");
m_vertexBufferMap[hash.getHashValue()] = buffer;
}
F32 r = color.GetX(), g = color.GetY(), b = color.GetZ(), a = color.GetW();
F32 x = 0.0f;
U32 size = (U32)text.size();
for(U32 i = 0; i < size; ++i) {
texture_glyph_t *glyph = texture_font_get_glyph(font, text[i]);
if(glyph != NULL) {
I32 kerning = 0;
if(i > 0) {
kerning = texture_glyph_get_kerning(glyph, text[i - 1]);
}
x += (float)kerning;
F32 x0 = (F32)(position.GetX() + x + glyph->offset_x);
F32 y0 = (F32)(position.GetY() + glyph->offset_y);
F32 x1 = (F32)(x0 + glyph->width);
F32 y1 = (F32)(y0 - glyph->height);
F32 s0 = glyph->s0;
F32 t0 = glyph->t0;
F32 s1 = glyph->s1;
F32 t1 = glyph->t1;
GLuint indices[6] = {0, 1, 2, 0, 2, 3};
vertex_t vertices[4] = { { x0, y0, 0.0f, s0, t0, r, g, b, a },
{ x0, y1, 0.0f, s0, t1, r, g, b, a },
{ x1, y1, 0.0f, s1, t1, r, g, b, a },
{ x1, y0, 0.0f, s1, t0, r, g, b, a }
};
vertex_buffer_push_back(buffer, vertices, 4, indices, 6);
x += glyph->advance_x;
}
}
}
// --------------------------------------------------------------- add_text ---
vec4
add_text( vertex_buffer_t * buffer, texture_font_t * font,
char *text, vec4 * color, vec2 * pen )
{
vec4 bbox = {{0,0,0,0}};
size_t i;
float r = color->red, g = color->green, b = color->blue, a = color->alpha;
for( i = 0; i < strlen(text); ++i )
{
texture_glyph_t *glyph = texture_font_get_glyph( font, text + i );
if( glyph != NULL )
{
float kerning = 0.0f;
if( i > 0)
{
kerning = texture_glyph_get_kerning( glyph, text + i - 1 );
}
pen->x += kerning;
int x0 = (int)( pen->x + glyph->offset_x );
int y0 = (int)( pen->y + glyph->offset_y );
int x1 = (int)( x0 + glyph->width );
int y1 = (int)( y0 - glyph->height );
float s0 = glyph->s0;
float t0 = glyph->t0;
float s1 = glyph->s1;
float t1 = glyph->t1;
GLuint indices[6] = {0,1,2, 0,2,3};
vertex_t vertices[4] = { { x0,y0,0, s0,t0, r,g,b,a },
{ x0,y1,0, s0,t1, r,g,b,a },
{ x1,y1,0, s1,t1, r,g,b,a },
{ x1,y0,0, s1,t0, r,g,b,a } };
vertex_buffer_push_back( buffer, vertices, 4, indices, 6 );
pen->x += glyph->advance_x;
if (x0 < bbox.x) bbox.x = x0;
if (y1 < bbox.y) bbox.y = y1;
if ((x1 - bbox.x) > bbox.width) bbox.width = x1-bbox.x;
if ((y0 - bbox.y) > bbox.height) bbox.height = y0-bbox.y;
}
}
return bbox;
}
// --------------------------------------------------------------- add_text ---
vec4
add_text( vertex_buffer_t * buffer, texture_font_t * font,
const char *text, vec4 * color, vec2 * pen )
{
auto bbox = vec4{0,0,0,0};
size_t i;
auto r = color->red, g = color->green, b = color->blue, a = color->alpha;
for( i = 0; i < strlen(text); ++i ) {
glfwSetTime(total_time);
auto glyph = texture_font_get_glyph( font, text + i );
total_time += glfwGetTime();
if( glyph ) {
float kerning = 0.0f;
if( i > 0) {
kerning = texture_glyph_get_kerning( glyph, text + i - 1 );
}
pen->x += kerning;
auto x0 = (float)( pen->x + glyph->offset_x );
auto y0 = (float)( pen->y + glyph->offset_y );
auto x1 = (float)( x0 + glyph->width );
auto y1 = (float)( y0 - glyph->height );
auto s0 = glyph->s0;
auto t0 = glyph->t0;
auto s1 = glyph->s1;
auto t1 = glyph->t1;
GLuint indices[6] = {0,1,2, 0,2,3};
vertex vertices[4] = { { x0,y0,0, s0,t0, r,g,b,a },
{ x0,y1,0, s0,t1, r,g,b,a },
{ x1,y1,0, s1,t1, r,g,b,a },
{ x1,y0,0, s1,t0, r,g,b,a } };
vertex_buffer_push_back( buffer, vertices, 4, indices, 6 );
pen->x += glyph->advance_x;
if (x0 < bbox.x) bbox.x = x0;
if (y1 < bbox.y) bbox.y = y1;
if ((x1 - bbox.x) > bbox.width) bbox.width = x1-bbox.x;
if ((y0 - bbox.y) > bbox.height) bbox.height = y0-bbox.y;
}
}
return bbox;
}
float OLabel::getWordWidth(const std::string& word)
{
float width = 0;
const maths::vec2& scale = m_Font->GetScale();
ftgl::texture_font_t* ftFont = m_Font->GetFTFont();
for (uint i = 0; i < word.length(); i++)
{
char c = word[i];
ftgl::texture_glyph_t* glyph = texture_font_get_glyph(ftFont, c);
if (glyph != nullptr) {
if (i > 0)
{
float kerning = texture_glyph_get_kerning(glyph, m_Text[i - 1]);
width += kerning / scale.x;
}
float gwidth = glyph->advance_x / scale.x;
width += gwidth;
}
}
return width;
}
// --------------------------------------------------------------- add_text ---
void add_text( vertex_buffer_t * buffer, texture_font_t * font,
char * text, vec4 * color, vec2 * pen )
{
size_t i;
float r = color->red, g = color->green, b = color->blue, a = color->alpha;
for( i = 0; i < strlen(text); ++i )
{
texture_glyph_t *glyph = texture_font_get_glyph( font, text + i );
if( glyph != NULL )
{
float kerning = 0.0f;
if( i > 0)
{
kerning = texture_glyph_get_kerning( glyph, text + i - 1 );
}
pen->x += kerning;
int x0 = (int)( pen->x + glyph->offset_x );
int y0 = (int)( pen->y + glyph->offset_y );
int x1 = (int)( x0 + glyph->width );
int y1 = (int)( y0 - glyph->height );
float s0 = glyph->s0;
float t0 = glyph->t0;
float s1 = glyph->s1;
float t1 = glyph->t1;
GLuint index = buffer->vertices->size;
GLuint indices[] = {index, index+1, index+2,
index, index+2, index+3};
vertex_t vertices[] = { { x0,y0,0, s0,t0, r,g,b,a, 0,1 },
{ x0,y1,0, s0,t1, r,g,b,a, 0,1 },
{ x1,y1,0, s1,t1, r,g,b,a, 0,1 },
{ x1,y0,0, s1,t0, r,g,b,a, 0,1 } };
vertex_buffer_push_back_indices( buffer, indices, 6 );
vertex_buffer_push_back_vertices( buffer, vertices, 4 );
pen->x += glyph->advance_x;
}
}
}
// --------------------------------------------------------------- add_text ---
void add_text( vertex_buffer_t * buffer, texture_font_t * font,
char *text, vec2 pen, vec4 fg_color_1, vec4 fg_color_2 )
{
size_t i;
for( i = 0; i < strlen(text); ++i )
{
texture_glyph_t *glyph = texture_font_get_glyph( font, text + i );
float kerning = 0.0f;
if( i > 0)
{
kerning = texture_glyph_get_kerning( glyph, text + i - 1 );
}
pen.x += kerning;
/* Actual glyph */
float x0 = ( pen.x + glyph->offset_x );
float y0 = (int)( pen.y + glyph->offset_y );
float x1 = ( x0 + glyph->width );
float y1 = (int)( y0 - glyph->height );
float s0 = glyph->s0;
float t0 = glyph->t0;
float s1 = glyph->s1;
float t1 = glyph->t1;
GLuint index = buffer->vertices->size;
GLuint indices[] = {index, index+1, index+2,
index, index+2, index+3};
vertex_t vertices[] = {
{ (int)x0,y0,0, s0,t0, fg_color_1 },
{ (int)x0,y1,0, s0,t1, fg_color_2 },
{ (int)x1,y1,0, s1,t1, fg_color_2 },
{ (int)x1,y0,0, s1,t0, fg_color_1 } };
vertex_buffer_push_back_indices( buffer, indices, 6 );
vertex_buffer_push_back_vertices( buffer, vertices, 4 );
pen.x += glyph->advance_x;
}
}
void mesh_init_vertices_text()
{
int i,j,k, kerning = 0;
float x0,y0,x1,y1;
float s0,t0,s1,t1;
float base_x = m_text.base_1_x;
float base_y = m_text.base_1_y;
texture_glyph_t *glyph;
m_text.char_len_1 = swprintf(m_text.text_1, 8, L"%d/%d", m_info.next_image, m_info.image_count);
if(m_text.char_len_1 > 0)
{
for(i=0;i<m_text.char_len_1;i++)
{
glyph = texture_font_get_glyph(m_texture.text_font, m_text.text_1[i]);
if( glyph != NULL )
{
kerning = 0;
if( i > 0) //test if needed
{kerning = texture_glyph_get_kerning( glyph, m_text.text_1[i-1] );}
base_x += kerning;
/*
x0 = ( base_x + (float)glyph->offset_x );
y0 = ( base_y + (float)glyph->offset_y );
x1 = ( x0 + (float)glyph->width );
y1 = ( y0 - (float)glyph->height );
*/
x0 = ( base_x + (((float)glyph->offset_x)*4/3) );
y0 = ( base_y + (float)glyph->offset_y );
x1 = ( x0 + (((float)glyph->width)*4/3) );
y1 = ( y0 - (float)glyph->height );
x0 = (2*x0)/m_display.scr_width;
x1 = (2*x1)/m_display.scr_width;
y0 = (2*y0)/m_display.scr_height;
y1 = (2*y1)/m_display.scr_height;
s0 = glyph->s0;
t0 = glyph->t0;
s1 = glyph->s1;
t1 = glyph->t1;
j=18*i;
k=12*i;
m_mesh.m_attribute.pos_text[j]=x0; m_mesh.m_attribute.pos_text[j+1]=y0; m_mesh.m_attribute.pos_text[j+2]=0.0;
m_mesh.m_attribute.texCoord_text[k]=s0; m_mesh.m_attribute.texCoord_text[k+1]=t0;
m_mesh.m_attribute.pos_text[j+3]=x0; m_mesh.m_attribute.pos_text[j+4]=y1; m_mesh.m_attribute.pos_text[j+5]=0.0;
m_mesh.m_attribute.texCoord_text[k+2]=s0; m_mesh.m_attribute.texCoord_text[k+3]=t1;
m_mesh.m_attribute.pos_text[j+6]=x1; m_mesh.m_attribute.pos_text[j+7]=y1; m_mesh.m_attribute.pos_text[j+8]=0.0;
m_mesh.m_attribute.texCoord_text[k+4]=s1; m_mesh.m_attribute.texCoord_text[k+5]=t1;
m_mesh.m_attribute.pos_text[j+9]=x0; m_mesh.m_attribute.pos_text[j+10]=y0; m_mesh.m_attribute.pos_text[j+11]=0.0;
m_mesh.m_attribute.texCoord_text[k+6]=s0; m_mesh.m_attribute.texCoord_text[k+7]=t0;
m_mesh.m_attribute.pos_text[j+12]=x1; m_mesh.m_attribute.pos_text[j+13]=y1; m_mesh.m_attribute.pos_text[j+14]=0.0;
m_mesh.m_attribute.texCoord_text[k+8]=s1; m_mesh.m_attribute.texCoord_text[k+9]=t1;
m_mesh.m_attribute.pos_text[j+15]=x1; m_mesh.m_attribute.pos_text[j+16]=y0; m_mesh.m_attribute.pos_text[j+17]=0.0;
m_mesh.m_attribute.texCoord_text[k+10]=s1; m_mesh.m_attribute.texCoord_text[k+11]=t0;
//base_x += glyph->advance_x;
base_x += (((float)glyph->advance_x)*4/3);
}
}
}
}
// --------------------------------------------------------------- add_text ---
void add_text( vertex_buffer_t * buffer, vec2 * pen, ... )
{
markup_t *markup;
char *text;
va_list args;
va_start ( args, pen );
do {
markup = va_arg( args, markup_t * );
if( markup == NULL )
{
break;
}
text = va_arg( args, char * );
size_t i;
texture_font_t * font = markup->font;
float r = markup->foreground_color.red;
float g = markup->foreground_color.green;
float b = markup->foreground_color.blue;
float a = markup->foreground_color.alpha;
for( i = 0; i < strlen(text); ++i )
{
texture_glyph_t *glyph = texture_font_get_glyph( font, text + i );
if( glyph != NULL )
{
float kerning = 0.0f;
if( i > 0)
{
kerning = texture_glyph_get_kerning( glyph, text + i - 1 );
}
pen->x += kerning;
/* Actual glyph */
float x0 = ( pen->x + glyph->offset_x );
float y0 = (int)( pen->y + glyph->offset_y );
float x1 = ( x0 + glyph->width );
float y1 = (int)( y0 - glyph->height );
float s0 = glyph->s0;
float t0 = glyph->t0;
float s1 = glyph->s1;
float t1 = glyph->t1;
GLuint index = buffer->vertices->size;
GLuint indices[] = {index, index+1, index+2,
index, index+2, index+3
};
vertex_t vertices[] = {
{ (int)x0,y0,0, s0,t0, r,g,b,a },
{ (int)x0,y1,0, s0,t1, r,g,b,a },
{ (int)x1,y1,0, s1,t1, r,g,b,a },
{ (int)x1,y0,0, s1,t0, r,g,b,a }
};
vertex_buffer_push_back_indices( buffer, indices, 6 );
vertex_buffer_push_back_vertices( buffer, vertices, 4 );
pen->x += glyph->advance_x;
}
}
} while( markup != 0 );
va_end ( args );
}
// ----------------------------------------------------------------------------
void
text_buffer_add_wchar( text_buffer_t * self,
vec2 * pen, markup_t * markup,
wchar_t current, wchar_t previous )
{
size_t vcount = 0;
size_t icount = 0;
vertex_buffer_t * buffer = self->buffer;
texture_font_t * font = markup->font;
float gamma = markup->gamma;
// Maximum number of vertices is 20 (= 5x2 triangles) per glyph:
// - 2 triangles for background
// - 2 triangles for overline
// - 2 triangles for underline
// - 2 triangles for strikethrough
// - 2 triangles for glyph
glyph_vertex_t vertices[4*5];
GLuint indices[6*5];
texture_glyph_t *glyph;
texture_glyph_t *black;
float kerning = 0;
if( current == L'\n' )
{
pen->x = self->origin.x;
pen->y += self->line_descender;
self->line_descender = 0;
self->line_ascender = 0;
self->line_start = vector_size( self->buffer->items );
return;
}
if( markup->font->ascender > self->line_ascender )
{
float y = pen->y;
pen->y -= (markup->font->ascender - self->line_ascender);
text_buffer_move_last_line( self, (int)(y-pen->y) );
self->line_ascender = markup->font->ascender;
}
if( markup->font->descender < self->line_descender )
{
self->line_descender = markup->font->descender;
}
glyph = texture_font_get_glyph( font, current );
black = texture_font_get_glyph( font, -1 );
if( glyph == NULL )
{
return;
}
if( previous && markup->font->kerning )
{
kerning = texture_glyph_get_kerning( glyph, previous );
}
pen->x += kerning;
// Background
if( markup->background_color.alpha > 0 )
{
float r = markup->background_color.r;
float g = markup->background_color.g;
float b = markup->background_color.b;
float a = markup->background_color.a;
float x0 = ( pen->x -kerning );
float y0 = (int)( pen->y + font->descender );
float x1 = ( x0 + glyph->advance_x );
float y1 = (int)( y0 + font->height + font->linegap );
float s0 = black->s0;
float t0 = black->t0;
float s1 = black->s1;
float t1 = black->t1;
SET_GLYPH_VERTEX(vertices[vcount+0],
(int)x0,y0,0, s0,t0, r,g,b,a, x0-((int)x0), gamma );
SET_GLYPH_VERTEX(vertices[vcount+1],
(int)x0,y1,0, s0,t1, r,g,b,a, x0-((int)x0), gamma );
SET_GLYPH_VERTEX(vertices[vcount+2],
(int)x1,y1,0, s1,t1, r,g,b,a, x1-((int)x1), gamma );
SET_GLYPH_VERTEX(vertices[vcount+3],
(int)x1,y0,0, s1,t0, r,g,b,a, x1-((int)x1), gamma );
indices[icount + 0] = vcount+0;
indices[icount + 1] = vcount+1;
indices[icount + 2] = vcount+2;
indices[icount + 3] = vcount+0;
indices[icount + 4] = vcount+2;
indices[icount + 5] = vcount+3;
vcount += 4;
icount += 6;
}
// Underline
if( markup->underline )
{
float r = markup->underline_color.r;
float g = markup->underline_color.g;
float b = markup->underline_color.b;
float a = markup->underline_color.a;
float x0 = ( pen->x - kerning );
float y0 = (int)( pen->y + font->underline_position );
float x1 = ( x0 + glyph->advance_x );
float y1 = (int)( y0 + font->underline_thickness );
float s0 = black->s0;
float t0 = black->t0;
float s1 = black->s1;
float t1 = black->t1;
SET_GLYPH_VERTEX(vertices[vcount+0],
(int)x0,y0,0, s0,t0, r,g,b,a, x0-((int)x0), gamma );
SET_GLYPH_VERTEX(vertices[vcount+1],
(int)x0,y1,0, s0,t1, r,g,b,a, x0-((int)x0), gamma );
SET_GLYPH_VERTEX(vertices[vcount+2],
(int)x1,y1,0, s1,t1, r,g,b,a, x1-((int)x1), gamma );
SET_GLYPH_VERTEX(vertices[vcount+3],
(int)x1,y0,0, s1,t0, r,g,b,a, x1-((int)x1), gamma );
indices[icount + 0] = vcount+0;
indices[icount + 1] = vcount+1;
indices[icount + 2] = vcount+2;
indices[icount + 3] = vcount+0;
indices[icount + 4] = vcount+2;
indices[icount + 5] = vcount+3;
vcount += 4;
icount += 6;
}
// Overline
if( markup->overline )
{
float r = markup->overline_color.r;
float g = markup->overline_color.g;
float b = markup->overline_color.b;
float a = markup->overline_color.a;
float x0 = ( pen->x -kerning );
float y0 = (int)( pen->y + (int)font->ascender );
float x1 = ( x0 + glyph->advance_x );
float y1 = (int)( y0 + (int)font->underline_thickness );
float s0 = black->s0;
float t0 = black->t0;
float s1 = black->s1;
float t1 = black->t1;
SET_GLYPH_VERTEX(vertices[vcount+0],
(int)x0,y0,0, s0,t0, r,g,b,a, x0-((int)x0), gamma );
SET_GLYPH_VERTEX(vertices[vcount+1],
(int)x0,y1,0, s0,t1, r,g,b,a, x0-((int)x0), gamma );
SET_GLYPH_VERTEX(vertices[vcount+2],
(int)x1,y1,0, s1,t1, r,g,b,a, x1-((int)x1), gamma );
SET_GLYPH_VERTEX(vertices[vcount+3],
(int)x1,y0,0, s1,t0, r,g,b,a, x1-((int)x1), gamma );
indices[icount + 0] = vcount+0;
indices[icount + 1] = vcount+1;
indices[icount + 2] = vcount+2;
indices[icount + 3] = vcount+0;
indices[icount + 4] = vcount+2;
indices[icount + 5] = vcount+3;
vcount += 4;
icount += 6;
}
/* Strikethrough */
if( markup->strikethrough )
{
float r = markup->strikethrough_color.r;
float g = markup->strikethrough_color.g;
float b = markup->strikethrough_color.b;
float a = markup->strikethrough_color.a;
float x0 = ( pen->x -kerning );
float y0 = (int)( pen->y + (int)font->ascender*.33);
float x1 = ( x0 + glyph->advance_x );
float y1 = (int)( y0 + (int)font->underline_thickness );
float s0 = black->s0;
float t0 = black->t0;
float s1 = black->s1;
float t1 = black->t1;
SET_GLYPH_VERTEX(vertices[vcount+0],
(int)x0,y0,0, s0,t0, r,g,b,a, x0-((int)x0), gamma );
SET_GLYPH_VERTEX(vertices[vcount+1],
(int)x0,y1,0, s0,t1, r,g,b,a, x0-((int)x0), gamma );
SET_GLYPH_VERTEX(vertices[vcount+2],
(int)x1,y1,0, s1,t1, r,g,b,a, x1-((int)x1), gamma );
SET_GLYPH_VERTEX(vertices[vcount+3],
(int)x1,y0,0, s1,t0, r,g,b,a, x1-((int)x1), gamma );
indices[icount + 0] = vcount+0;
indices[icount + 1] = vcount+1;
indices[icount + 2] = vcount+2;
indices[icount + 3] = vcount+0;
indices[icount + 4] = vcount+2;
indices[icount + 5] = vcount+3;
vcount += 4;
icount += 6;
}
{
// Actual glyph
float r = markup->foreground_color.red;
float g = markup->foreground_color.green;
float b = markup->foreground_color.blue;
float a = markup->foreground_color.alpha;
float x0 = ( pen->x + glyph->offset_x );
float y0 = (int)( pen->y + glyph->offset_y );
float x1 = ( x0 + glyph->width );
float y1 = (int)( y0 - glyph->height );
float s0 = glyph->s0;
float t0 = glyph->t0;
float s1 = glyph->s1;
float t1 = glyph->t1;
SET_GLYPH_VERTEX(vertices[vcount+0],
(int)x0,y0,0, s0,t0, r,g,b,a, x0-((int)x0), gamma );
SET_GLYPH_VERTEX(vertices[vcount+1],
(int)x0,y1,0, s0,t1, r,g,b,a, x0-((int)x0), gamma );
SET_GLYPH_VERTEX(vertices[vcount+2],
(int)x1,y1,0, s1,t1, r,g,b,a, x1-((int)x1), gamma );
SET_GLYPH_VERTEX(vertices[vcount+3],
(int)x1,y0,0, s1,t0, r,g,b,a, x1-((int)x1), gamma );
indices[icount + 0] = vcount+0;
indices[icount + 1] = vcount+1;
indices[icount + 2] = vcount+2;
indices[icount + 3] = vcount+0;
indices[icount + 4] = vcount+2;
indices[icount + 5] = vcount+3;
vcount += 4;
icount += 6;
vertex_buffer_push_back( buffer, vertices, vcount, indices, icount );
pen->x += glyph->advance_x * (1.0 + markup->spacing);
}
}
void BatchRenderer2D::drawString(const std::string& text, const vec3& position, const Font& font, unsigned int color)
{
float samplerIndex = 0.0f;
bool found = false;
for (size_t i = 0; i < m_Textures.size(); i++)
{
if (m_Textures[i] == font.getID())
{
found = true;
samplerIndex = (float)(i + 1);
break;
}
}
if (!found)
{
if (m_Textures.size() >= MAX_TEXTURES)
{
end();
begin();
}
m_Textures.push_back(font.getID());
samplerIndex = (float)m_Textures.size();
}
float x = position.x;
const vec2& scale = font.getScale();
for (size_t i = 0; i < text.length(); i++)
{
const char& c = text[i];
ftgl::texture_glyph_t* glyph = ftgl::texture_font_get_glyph(font.getFont(), c);
if (glyph)
{
if (i > 0)
{
float kerning = texture_glyph_get_kerning(glyph, text[i - 1]);
x += kerning / scale.x;
}
float x0 = x + glyph->offset_x / scale.x;
float y0 = position.y + glyph->offset_y / scale.y;
float x1 = x0 + glyph->width / scale.x;
float y1 = y0 - glyph->height / scale.y;
float u0 = glyph->s0;
float v0 = glyph->t0;
float u1 = glyph->s1;
float v1 = glyph->t1;
m_Buffer->position = *m_TransformationBack * vec3(x0, y0, 0.0f);
m_Buffer->uv = vec2(u0, v0);
m_Buffer->sampler = samplerIndex;
m_Buffer->color = color;
m_Buffer++;
m_Buffer->position = *m_TransformationBack * vec3(x0, y1, 0.0f);
m_Buffer->uv = vec2(u0, v1);
m_Buffer->sampler = samplerIndex;
m_Buffer->color = color;
m_Buffer++;
m_Buffer->position = *m_TransformationBack * vec3(x1, y1, 0.0f);
m_Buffer->uv = vec2(u1, v1);
m_Buffer->sampler = samplerIndex;
m_Buffer->color = color;
m_Buffer++;
m_Buffer->position = *m_TransformationBack * vec3(x1, y0, 0.0f);
m_Buffer->uv = vec2(u1, v0);
m_Buffer->sampler = samplerIndex;
m_Buffer->color = color;
m_Buffer++;
m_IndexCount += 6;
x += glyph->advance_x / scale.x;
}
}
/*m_Buffer->position = vec3(-8, -8, 0);
m_Buffer->uv = vec2(0, 1);
m_Buffer->sampler = samplerIndex;
m_Buffer->color = color;
m_Buffer++;
m_Buffer->position = vec3(8, -8, 0);
m_Buffer->uv = vec2(1, 1);
m_Buffer->sampler = samplerIndex;
m_Buffer->color = color;
m_Buffer++;
m_Buffer->position = vec3(8, 8, 0);
m_Buffer->uv = vec2(1, 0);
m_Buffer->sampler = samplerIndex;
m_Buffer->color = color;
m_Buffer++;
m_Buffer->position = vec3(-8, 8, 0);
m_Buffer->uv = vec2(0, 0);
m_Buffer->sampler = samplerIndex;
m_Buffer->color = color;
m_Buffer++;
m_IndexCount += 6;*/
}
// ----------------------------------------------------------- build_buffer ---
void
build_buffer( void )
{
vec2 pen;
size_t i;
texture_font_t *font;
texture_glyph_t *glyph;
vec4 white = {{1.0, 1.0, 1.0, 1.0}};
vec4 none = {{1.0, 1.0, 1.0, 0.0}};
markup_t markup = {
.family = "Arial",
.size = 10.0,
.bold = 0,
.italic = 0,
.rise = 0.0,
.spacing = 0.0,
.gamma = 2.2,
.foreground_color = white,
.background_color = none,
.underline = 0,
.underline_color = white,
.overline = 0,
.overline_color = white,
.strikethrough = 0,
.strikethrough_color = white,
.font = 0,
};
vertex_buffer_clear( buffer );
texture_atlas_clear( atlas );
if( p_family == VERA)
{
font = texture_font_new( atlas, "fonts/Vera.ttf", p_size );
}
else if( p_family == VERA_MONO)
{
font = texture_font_new( atlas, "fonts/VeraMono.ttf", p_size );
}
else if( p_family == GEORGIA)
{
font = texture_font_new( atlas, "fonts/Georgia.ttf", p_size );
}
else if( p_family == TIMES )
{
font = texture_font_new( atlas, "fonts/Times.ttf", p_size );
}
else if( p_family == TAHOMA )
{
font = texture_font_new( atlas, "fonts/Tahoma.ttf", p_size );
}
else if( p_family == ARIAL )
{
font = texture_font_new( atlas, "fonts/Arial.ttf", p_size );
}
else if( p_family == VERDANA )
{
font = texture_font_new( atlas, "fonts/Verdana.ttf", p_size );
}
else
{
fprintf( stderr, "Error : Unknown family type\n" );
return;
}
font->hinting = p_hinting;
font->filtering = 1;
float norm = 1.0/(p_primary + 2*p_secondary + 2*p_tertiary);
font->lcd_weights[0] = (unsigned char)(p_tertiary*norm*256);
font->lcd_weights[1] = (unsigned char)(p_secondary*norm*256);
font->lcd_weights[2] = (unsigned char)(p_primary*norm*256);
font->lcd_weights[3] = (unsigned char)(p_secondary*norm*256);
font->lcd_weights[4] = (unsigned char)(p_tertiary*norm*256);
texture_font_load_glyphs( font,
L" !\"#$%&'()*+,-./0123456789:;<=>?"
L"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
L"`abcdefghijklmnopqrstuvwxyz{|}~" );
pen.x = 10;
pen.y = 600 - font->height - 10;
glyph = texture_font_get_glyph( font, text[0] );
add_glyph( glyph, buffer, &markup, &pen, 0 );
for( i=1; i<wcslen(text); ++i )
{
if( text[i] == '\n' )
{
pen.x = 10;
pen.y -= font->height; // + 0.01*(size - (int)size)*font->height;
}
else
{
glyph = texture_font_get_glyph( font, text[i] );
float kerning = 0.0;
if( p_kerning )
{
kerning = texture_glyph_get_kerning( glyph, text[i-1] );
}
add_glyph( glyph, buffer, &markup, &pen, kerning );
}
}
texture_font_delete (font );
}
// ---------------------------------------------------------------- display ---
void display(void)
{
if( p_invert )
{
glClearColor( 0, 0, 0, 1 );
}
else
{
glClearColor( 1, 1, 1, 1 );
}
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glEnable( GL_TEXTURE_2D );
glBindTexture( GL_TEXTURE_2D, atlas->id );
if( !p_lcd_filtering )
{
glEnable( GL_COLOR_MATERIAL );
glEnable( GL_BLEND );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
if( p_invert )
{
glColor4f(1,1,1,1);
}
else
{
glColor4f(0,0,0,1);
}
}
else
{
glEnable( GL_COLOR_MATERIAL );
glBlendFunc( GL_CONSTANT_COLOR_EXT,
GL_ONE_MINUS_SRC_COLOR );
glEnable( GL_BLEND );
glColor3f( 1,1,1 );
if( p_invert )
{
glBlendColor( 1, 1, 1, 1 );
}
else
{
glBlendColor( 0, 0, 0, 1 );
}
}
if( !p_lcd_filtering )
{
vertex_buffer_render( buffer, GL_TRIANGLES, "vt" );
}
else
{
glUseProgram( program );
glUniform1i( texture_location, 0 );
glUniform1f( gamma_location, p_gamma );
float norm = 1.0/(p_primary+2*p_secondary+2*p_tertiary);
glUniform1f( primary_location, p_primary*norm );
glUniform1f( secondary_location, p_secondary*norm );
glUniform1f( tertiary_location, p_tertiary*norm );
glUniform2f( pixel_location,
1.0/atlas->width,
1.0/atlas->height );
vertex_buffer_render( buffer, GL_TRIANGLES, "vtc" );
glUseProgram( 0 );
}
TwDraw( );
glutSwapBuffers( );
}
// ---------------------------------------------------------------- reshape ---
void reshape( int width, int height )
{
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, width, 0, height, -1, 1);
glMatrixMode(GL_MODELVIEW);
TwWindowSize( width, height );
}
void Render::Text(Font* font, const std::string& text, float x, float y, const Color& color) {
if (color.A == 0) return;
this->SetTexture(font->Atlas->id);
this->SetShader(this->DefaultShaderText.ProgramHandle);
x += this->_DrawOffset.X;
y += this->_DrawOffset.Y;
y -= font->FontHandle->height / 4;
float cx = x;
float cy = y;
int len = (int)text.size();
this->CheckSpace(len * 4, len * 6); // per square, 4 vertices and 6 indices
float currentMaxLineHeight = 0;
for (int i = 0; i < len; i++) {
char l = text[i];
texture_glyph_t* glyph = texture_font_get_glyph(font->FontHandle, (wchar_t)text[i]);
if (glyph == null) {
TL_ASSERT(false);
return;
}
if (i > 0) {
cx += texture_glyph_get_kerning(glyph, text[i - 1]);
}
if (l == '\n') {
cy += font->FontHandle->height;
cx = x;
continue;
}
float w = (float)glyph->width;
float h = (float)font->FontHandle->height;
_vertexData a, b, c, d;
float lw = cx + glyph->offset_x;
float lh = cy + h - glyph->offset_y;
float x1 = glyph->s0;
float x2 = glyph->s1;
float y1 = glyph->t0;
float y2 = glyph->t1;
float pixelWidth = 1.0f / this->DefaultFont->Atlas->width;
float pixelHeight = 1.0f / this->DefaultFont->Atlas->height;
a.Location.X = lw;
a.Location.Y = lh;
b.Location.X = lw + w;
b.Location.Y = lh;
c.Location.X = lw;
c.Location.Y = lh + glyph->height;
d.Location.X = lw + w;
d.Location.Y = lh + glyph->height;
a.TextureLocation.X = x1;
a.TextureLocation.Y = y1;
b.TextureLocation.X = x2;
b.TextureLocation.Y = y1;
c.TextureLocation.X = x1;
c.TextureLocation.Y = y2;
d.TextureLocation.X = x2;
d.TextureLocation.Y = y2;
if (this->ClippingEnabled) {
if (lw < this->_ClippingPos.X) {
// if the sign is fully outside of the clipping, then just skip it.
if (lw + w < this->_ClippingPos.X) {
cx += glyph->advance_x;
continue;
} else {
// calculate the new screen and texture location
float offset = this->_ClippingPos.X - lw;
a.Location.X += offset;
c.Location.X += offset;
a.TextureLocation.X += offset * pixelWidth;
c.TextureLocation.X += offset * pixelWidth;
}
}
if (lw + w > this->_ClippingPos.X + this->_ClippingSize.X) {
if (cx > this->_ClippingPos.X + this->_ClippingSize.X) {
cx += glyph->advance_x;
continue;
} else {
float offset = lw + w - this->_ClippingPos.X - this->_ClippingSize.X;
b.Location.X -= offset;
d.Location.X -= offset;
b.TextureLocation.X -= offset * pixelWidth;
d.TextureLocation.X -= offset * pixelWidth;
}
}
if (a.Location.Y < this->_ClippingPos.Y) {
if (d.Location.Y < this->_ClippingPos.Y) {
cx += glyph->advance_x;
continue;
} else {
float offset = this->_ClippingPos.Y - a.Location.Y;
a.Location.Y += offset;
b.Location.Y += offset;
a.TextureLocation.Y += offset * pixelHeight;
b.TextureLocation.Y += offset * pixelHeight;
}
}
if (d.Location.Y > this->_ClippingPos.Y + this->_ClippingSize.Y) {
if (b.Location.Y > this->_ClippingPos.Y + this->_ClippingSize.Y) {
cx += glyph->advance_x;
continue;
} else {
float offset = d.Location.Y - this->_ClippingPos.Y - this->_ClippingSize.Y;
c.Location.Y -= offset;
d.Location.Y -= offset;
c.TextureLocation.Y -= offset * pixelHeight;
d.TextureLocation.Y -= offset * pixelHeight;
}
}
}
a.Color = color;
b.Color = color;
c.Color = color;
d.Color = color;
unsigned int curVertices = this->VerticeDataCount;
VERTICE_PUSH(a);
VERTICE_PUSH(b);
VERTICE_PUSH(c);
VERTICE_PUSH(d);
INDICE_PUSH(curVertices + 0);
INDICE_PUSH(curVertices + 1);
INDICE_PUSH(curVertices + 2);
INDICE_PUSH(curVertices + 1);
INDICE_PUSH(curVertices + 3);
INDICE_PUSH(curVertices + 2);
cx += glyph->advance_x;
}
}
void opengl_font_print(
mFloat px,
mFloat py,
const wchar_t* msg,
mFloat r,
mFloat g,
mFloat b,
mFloat a)
{
GLfloat colors[] =
{
r, g, b, a
};
GLfloat use_texture[] =
{
1.0f, 0.0f
};
size_t i,
len = wcslen(msg);
float dx = 0.0f;
mFloat cwidth = (mFloat)0.0;
GLfloat matrix_copy[16];
opengl_font_t* font = (opengl_font_t*)current_font->data;
fontSize(L"M", &cwidth, NULL);
opengl_view_copy(matrix_copy);
opengl_setup_view(
px * window_zoom,
py * window_zoom,
1.0f,
- 1.0f);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, font->atlas->id);
for(i = 0 ; i < len ; i++)
{
texture_glyph_t *glyph;
if(msg[i] == L'\t')
{
dx += 8.0f * cwidth * window_zoom;
continue;
}
glyph = texture_font_get_glyph(font->font, msg[i]);
if(glyph != NULL)
{
GLfloat x0 = dx + (GLfloat)glyph->offset_x;
GLfloat y0 = (GLfloat)glyph->offset_y;
GLfloat x1 = x0 + (GLfloat)glyph->width;
GLfloat y1 = y0 - (GLfloat)glyph->height - 1.25f;
GLfloat s0 = glyph->s0;
GLfloat t0 = glyph->t0;
GLfloat s1 = glyph->s1;
GLfloat t1 = glyph->t1 + 0.00125f;
GLfloat vertices[] =
{
x0, y0,
x0, y1,
x1, y0,
x1, y1
};
GLfloat tex_indices[] =
{
s0, t0,
s0, t1,
s1, t0,
s1, t1
};
opengl_draw_data(vertices, tex_indices, colors, use_texture);
dx += glyph->advance_x + texture_glyph_get_kerning(glyph, msg[i]);
}
}
glDisable(GL_TEXTURE_2D);
opengl_view_set(matrix_copy);
}
float TextureGlyph::GetKerning(const wchar_t charcode) {
return texture_glyph_get_kerning(static_cast<const texture_glyph_t*>(self_),
charcode);
}
void Stats::update_text()
{
// Destroy any old vertex buffers.
glDeleteBuffers(1, &position_vbo);
glDeleteBuffers(1, &texcoord_vbo);
glDeleteVertexArrays(1, &vao);
vertex_count = 0;
// Bail out if we do not have any text.
if (lines.size() == 0)
return;
// Count the number of vertices.
for (int i = 0; i < lines.size(); ++i)
{
vertex_count += lines[i].text.size() * 6;
}
// Generate the new vertices.
glm::vec2 pen;
std::vector<glm::vec2> positions(vertex_count);
std::vector<glm::vec2> texcoords(vertex_count);
int offset = 0;
for (int i = 0; i < lines.size(); ++i)
{
const std::string& text = lines[i].text;
int text_length = text.size();
pen.x = 0;
for (int k = 0; k < text_length; ++k)
{
wchar_t c = (wchar_t) text[k];
texture_glyph_t* glyph = texture_font_get_glyph(texture_font, c);
float kerning = 0.0f;
if (k > 0)
{
kerning = texture_glyph_get_kerning(glyph, text[k - 1]);
}
pen.x += kerning;
float x0 = pen.x + glyph->offset_x;
float y0 = pen.y + glyph->offset_y;
float x1 = x0 + glyph->width;
float y1 = y0 - glyph->height;
positions[offset + k * 6 + 0] = glm::vec2(x0, y0);
positions[offset + k * 6 + 1] = glm::vec2(x0, y1);
positions[offset + k * 6 + 2] = glm::vec2(x1, y1);
positions[offset + k * 6 + 3] = glm::vec2(x0, y0);
positions[offset + k * 6 + 4] = glm::vec2(x1, y1);
positions[offset + k * 6 + 5] = glm::vec2(x1, y0);
float s0 = glyph->s0;
float t0 = glyph->t0;
float s1 = glyph->s1;
float t1 = glyph->t1;
texcoords[offset + k * 6 + 0] = glm::vec2(s0, t0);
texcoords[offset + k * 6 + 1] = glm::vec2(s0, t1);
texcoords[offset + k * 6 + 2] = glm::vec2(s1, t1);
texcoords[offset + k * 6 + 3] = glm::vec2(s0, t0);
texcoords[offset + k * 6 + 4] = glm::vec2(s1, t1);
texcoords[offset + k * 6 + 5] = glm::vec2(s1, t0);
pen.x += glyph->advance_x;
}
pen.y -= (texture_font->ascender - texture_font->descender) + texture_font->linegap;
offset += text_length * 6;
}
// Generate new vertex buffers.
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glGenBuffers(1, &position_vbo);
glBindBuffer(GL_ARRAY_BUFFER, position_vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(glm::vec2) * vertex_count, &positions[0], GL_STATIC_DRAW);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(0);
glGenBuffers(1, &texcoord_vbo);
glBindBuffer(GL_ARRAY_BUFFER, texcoord_vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(glm::vec2) * vertex_count, &texcoords[0], GL_STATIC_DRAW);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(1);
}
// Text functions
// Create text string with specified font
// Begin at [0,0]
// Store data to modelText[modelIndex]
int modelEngine::createText(int modelIndex, texture_font_t * font, wchar_t * text, vec4 * color, vec2 * pen, vec3 * offset, vec2 * scale)
{
size_t i;
vec2 startPen = *pen;
//Zoffset = Zoffset * 400;
// Make room to store vertices and texture coordinates for 50 characters
GLfloat vertices[3600];
int verticesIndex = 0;
GLfloat texCoordinates[2400];
int texIndex = 0;
// Return -1 if model index is invalid
if(modelIndex == -1)
{
return -1;
}
float r = color->red, g = color->green, b = color->blue, a = color->alpha;
for( i=0; i<wcslen(text); ++i )
{
// Check for special character
wchar_t currentChar = text[i];
wchar_t* currentCharPointer = text + i;
//wchar_t newLineChar = L"\n";
//if((text + i) == L"\n")
int result = wcsncmp(currentCharPointer, L"\n", 1);
if(result == 0)
{
// New line found
pen->x = startPen.x;
pen->y = startPen.y - font->height;
startPen.y = pen->y;
}
texture_glyph_t *glyph = texture_font_get_glyph( font, text[i] );
if( glyph != NULL )
{
int kerning = 0;
if( i > 0)
{
kerning = texture_glyph_get_kerning( glyph, text[i-1] );
}
pen->x += kerning;
int x0 = (int)( pen->x + glyph->offset_x );
int y0 = (int)( pen->y + glyph->offset_y );
int x1 = (int)( x0 + glyph->width );
int y1 = (int)( y0 - glyph->height );
float s0 = glyph->s0;
float t0 = glyph->t0;
float s1 = glyph->s1;
float t1 = glyph->t1;
GLfloat vertexCoordinates[] = {
x0,y0,0,
x0,y1,0,
x1,y1,0,
x0,y0,0,
x1,y1,0,
x1,y0,0,
};
for(int i = 0; i < 18; i++)
{
vertexCoordinates[i] = vertexCoordinates[i] / 400;
}
GLfloat textureCoordinates[] = {
s0,t0,
s0,t1,
s1,t1,
s0,t0,
s1,t1,
s1,t0,
};
// Copy vertex data
memcpy (vertices + verticesIndex, vertexCoordinates, 18 * sizeof(GLfloat));
// Increase pointer
verticesIndex += 18;
// Copy texture data
memcpy (texCoordinates + texIndex, textureCoordinates, 12 * sizeof(GLfloat));
// Increase pointer
texIndex += 12;
// Increase pen position
pen->x += glyph->advance_x;
}
}
// Scale all data in X and Y direction
for(int i = 0; i < verticesIndex; i+=3)
{
vertices[i] = vertices[i] * scale->x;
vertices[i+1] = vertices[i+1] * scale->y;
}
// Store data to buffers
// First, orphan GL buffers
// Check if text has been enabled
if(modelText[modelIndex].textReady != 0)
{
glDeleteBuffers(1, &modelText[modelIndex].vertexBuffer);
glDeleteBuffers(1, &modelText[modelIndex].texBuffer);
//orphanArrayBuffer(modelText[modelIndex].vertexBuffer, modelText[modelIndex].vertexBufferSize);
//orphanArrayBuffer(modelText[modelIndex].texBuffer, modelText[modelIndex].texBufferSize);
}
// Generate vertex buffer
glGenBuffers(1, &modelText[modelIndex].vertexBuffer);
// Bind buffer
glBindBuffer(GL_ARRAY_BUFFER, modelText[modelIndex].vertexBuffer);
// Create buffer data
glBufferData(GL_ARRAY_BUFFER, verticesIndex * sizeof(GLfloat), &vertices, GL_STATIC_DRAW);
checkGLError();
// Unbind buffer
glBindBuffer(GL_ARRAY_BUFFER, 0);
// Store number of vertices
modelText[modelIndex].vertexBufferSize = verticesIndex;
// Generate texture buffer
glGenBuffers(1, &modelText[modelIndex].texBuffer);
// Bind buffer
glBindBuffer(GL_ARRAY_BUFFER, modelText[modelIndex].texBuffer);
// Create buffer data
glBufferData(GL_ARRAY_BUFFER, texIndex * sizeof(GLfloat), &texCoordinates, GL_STATIC_DRAW);
checkGLError();
// Unbind buffer
glBindBuffer(GL_ARRAY_BUFFER, 0);
// Store number of vertices
modelText[modelIndex].texBufferSize = texIndex;
// Store number of characters
modelText[modelIndex].characters = wcslen(text);
// Store font color
modelText[modelIndex].fontColor.r = color->r;
modelText[modelIndex].fontColor.g = color->g;
modelText[modelIndex].fontColor.b = color->b;
modelText[modelIndex].fontColor.a = color->a;
// Store font offset on model
modelText[modelIndex].offset = *offset;
modelText[modelIndex].textReady = 1;
return 0;
}
void modelEngine::add_text(texture_font_t * font, wchar_t * text, vec4 * color, vec2 * pen, GLuint vertexBuffer, GLfloat Zoffset)
{
size_t i;
float r = color->red, g = color->green, b = color->blue, a = color->alpha;
for( i=0; i<wcslen(text); ++i )
{
texture_glyph_t *glyph = texture_font_get_glyph( font, text[i] );
if( glyph != NULL )
{
int kerning = 0;
if( i > 0)
{
kerning = texture_glyph_get_kerning( glyph, text[i-1] );
}
pen->x += kerning;
int x0 = (int)( pen->x + glyph->offset_x );
int y0 = (int)( pen->y + glyph->offset_y );
int x1 = (int)( x0 + glyph->width );
int y1 = (int)( y0 - glyph->height );
float s0 = glyph->s0;
float t0 = glyph->t0;
float s1 = glyph->s1;
float t1 = glyph->t1;
GLfloat indices[6] = {0,1,2, 0,2,3};
GLfloat vertexCoordinates[] = {
x0,y0,Zoffset,
x0,y1,Zoffset,
x1,y1,Zoffset,
x0,y0,Zoffset,
x1,y1,Zoffset,
x1,y0,Zoffset,
};
for(int i = 0; i < 18; i++)
{
vertexCoordinates[i] = vertexCoordinates[i] / 1000;
}
GLfloat textureCoordinates[] = {
s0,t0,
s0,t1,
s1,t1,
s0,t0,
s1,t1,
s1,t0,
};
GLfloat colors[] = {
r, g, b, a,
r, g, b, a,
r, g, b, a,
r, g, b, a,
r, g, b, a,
r, g, b, a,
};
GLfloat vertices[] = {
x0,y0,0,
s0,t0,
r, g, b, a,
x0,y1,0,
s0,t1,
r, g, b, a,
x1,y1,0,
s1,t1,
r, g, b, a,
x0,y0,0,
s0,t0,
r, g, b, a,
x1,y1,0,
s1,t1,
r, g, b, a,
x1,y0,0,
s1,t0,
r, g, b, a
};
//vertex_buffer_push_back( buffer, vertices, 4, indices, 6 );
pen->x += glyph->advance_x;
// Store vertices to buffer
// Generate buffer
GLuint verticeBuffer = 0;
GLuint textureBuffer = 0;
GLuint colorBuffer = 0;
// Generate vertex buffer
glGenBuffers(1, &verticeBuffer);
// Bind buffer
glBindBuffer(GL_ARRAY_BUFFER, verticeBuffer);
// Create buffer data
glBufferData(GL_ARRAY_BUFFER, 216, &vertexCoordinates, GL_STATIC_DRAW);
// Unbind buffer
glBindBuffer(GL_ARRAY_BUFFER, 0);
// Generate texture buffer
glGenBuffers(1, &textureBuffer);
// Bind buffer
glBindBuffer(GL_ARRAY_BUFFER, textureBuffer);
// Create buffer data
glBufferData(GL_ARRAY_BUFFER, 48, &textureCoordinates, GL_STATIC_DRAW);
// Unbind buffer
glBindBuffer(GL_ARRAY_BUFFER, 0);
// Generate color buffer
glGenBuffers(1, &colorBuffer);
// Bind buffer
glBindBuffer(GL_ARRAY_BUFFER, colorBuffer);
// Create buffer data
glBufferData(GL_ARRAY_BUFFER, 48, &colors, GL_STATIC_DRAW);
// Unbind buffer
glBindBuffer(GL_ARRAY_BUFFER, 0);
// Enabling color array makes font dissapear
//glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState( GL_VERTEX_ARRAY );
//glDisable(GL_TEXTURE_2D);
//glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
//glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
// Start with a clear screen
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
// Draw on screen
// Bind texture
glBindTexture(GL_TEXTURE_2D, atlas->id);
// Bind buffers
// Bind vertex buffer
glBindBuffer(GL_ARRAY_BUFFER, verticeBuffer);
glVertexPointer(3, GL_FLOAT, 0, NULL);
// Bind texture buffer
glBindBuffer(GL_ARRAY_BUFFER, textureBuffer);
glTexCoordPointer(2, GL_FLOAT, 0, NULL);
// Bind color buffer
glBindBuffer(GL_ARRAY_BUFFER, colorBuffer);
glColorPointer(4, GL_FLOAT, 0, NULL);
glPushMatrix();
// Move model
glTranslatef(0.0f,0.0f,20.0f);
// Rotate model
glRotatef(0.0f, 1.0, 0.0, 0.0);
glRotatef(0.0f, 0.0, 1.0, 0.0);
glRotatef(0.0f, 0.0, 0.0, 1.0);
// Scale model
glScalef(15.0f,15.0f,15.0f);
glColor4f(0.0f, 0.6f, 1.0f, 0.5f);
glDrawArrays(GL_TRIANGLES, 0, 6);
// Display
eglSwapBuffers(state.display, state.surface);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glEnableClientState(GL_NORMAL_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
//glEnable(GL_TEXTURE_2D);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glPopMatrix();
}
}
}
TextInfo FontRenderer::RenderText(std::string text, float xPos, float yPos, float pixelWidthLimit, const glm::vec4 color, FontShader* shader, bool wordFormat)
{
TextInfo result;
result.start_position = glm::vec2(0, 0);
result.end_position = glm::vec2(0, 0);
float scaleX = ContextWindow::getCurrent().getWidth();
float scaleY = ContextWindow::getCurrent().getHeight();
float x = xPos / scaleX;
float firstPos = (float)xPos;
float limitX = (pixelWidthLimit + xPos) / scaleX;
int yAdvance = 0;
auto fit = [&text, pixelWidthLimit](int index, float xPos, float headStart, ftgl::texture_glyph_t* glyph)
{
float x = (float)xPos;
for (; text[index + 1] != ' ' && text[index + 1] != 0; ++index)
{
unsigned char c = text[index];
x += glyph->advance_x;
if ((xPos + pixelWidthLimit) < x + headStart)
return false;
}
return true;
};
glEnable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
shader->useShader();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, atlas->id);
for (int i = 0; i < text.size(); i++)
{
unsigned char c = text[i];
ftgl::texture_glyph_t* glyph = ftgl::texture_font_get_glyph(font, c);
if (glyph != NULL)
{
IndexedModel * im = fontMesh->getQuad()->getIndexedModel();
if (i > 0)
{
float kerning = texture_glyph_get_kerning(glyph, text[i - 1]);
x += kerning / scaleX;
}
if (i > 0)
{
if (text[i - 1] == ' ' && text[i] != ' ')
{
if (!fit(i, firstPos, x * scaleX, glyph) && c != ' ')
{
x = xPos / scaleX;
yPos -= font->ascender - font->descender; // highest glyph height - lowest glyph height
yAdvance++;
}
}
}
float x0 = x + glyph->offset_x / scaleX;
float y0 = (yPos + glyph->offset_y) / scaleY;
float x1 = x0 + glyph->width / scaleX;
float y1 = y0 - glyph->height / scaleY;
if (i == 0)
{
result.start_position.x = x0;
result.start_position.y = y0;
result.end_position.x = x1;
}
if (x1 > result.end_position.x)
result.end_position.x = x1;
result.end_position.y = y1;
im->positions[0] = glm::vec3(x0, y1, 0.0f);
im->positions[1] = glm::vec3(x0, y0, 0.0f);
im->positions[2] = glm::vec3(x1, y1, 0.0f);
im->positions[3] = glm::vec3(x1, y0, 0.0f);
#if 0 // Font debug
glUseProgram(0);
glLineWidth(1.0);
glBegin(GL_LINES);
glColor3f(1, 0, 0);
glVertex3f(x0, y1, -1.0f); // Vertical left debug line
glVertex3f(x0, y0, -1.0f);
glVertex3f(x1, y1, -1.0f); // Vertical right
glVertex3f(x1, y0, -1.0f);
glVertex3f(x0, y1, -1.0f); // Horizontal bottom
glVertex3f(x1, y1, -1.0f);
glVertex3f(x0, y0, -1.0f); // Horizontal top
glVertex3f(x1, y0, -1.0f);
glEnd();
shader->useShader();
#endif
im->texCoords[0] = glm::vec2(glyph->s0, glyph->t1);
im->texCoords[1] = glm::vec2(glyph->s0, glyph->t0);
im->texCoords[2] = glm::vec2(glyph->s1, glyph->t1);
im->texCoords[3] = glm::vec2(glyph->s1, glyph->t0);
glBindVertexArray(fontMesh->getVertexArrayID());
glBindBuffer(GL_ARRAY_BUFFER, fontMesh->getVertexBufferID());
glBufferSubData(GL_ARRAY_BUFFER, 0, im->positions.size() * sizeof(float) * 3, &im->positions[0]);
glBindBuffer(GL_ARRAY_BUFFER, fontMesh->getTextureBufferID());
glBufferSubData(GL_ARRAY_BUFFER, 0, im->texCoords.size() * sizeof(float) * 2, &im->texCoords[0]);
shader->setTextColor(color);
shader->update();
fontMesh->render();
x += glyph->advance_x / scaleX;
}
}
glEnable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
glUseProgram(0);
result.num_rows = yAdvance + 1;
result.height = (font->ascender - font->descender) * (float)yAdvance;
result.width = result.end_position.x - result.start_position.x;
#if 1 // Font debug
glUseProgram(0);
glLineWidth(1.0);
glBegin(GL_LINES);
glColor3f(1, 0, 0);
glVertex3f(result.start_position.x, result.start_position.y, -1.0f); // Vertical left debug line
glVertex3f(result.end_position.x, result.end_position.y, -1.0f);
glEnd();
shader->useShader();
#endif
return result;
}
