void Render(void)
{
using namespace oglplus;
gl.Clear().ColorBuffer().DoIt();
GLfloat t = GLfloat(FrameTime());
rndr.Use();
rndr_time.Set(t);
text_stream.str(std::string());
text_stream
<< "Time: "
<< std::fixed
<< std::setw(5)
<< std::setprecision(3)
<< t << " [s]";
if(time_str != text_stream.str())
{
time_str = text_stream.str();
time_layout.Set(time_str);
}
rndr_camera_matrix.Set(
CamMatrixf::Orbiting(
Vec3f(),
GLfloat(9.0 + SineWave(t / 7.0)*3.0),
-FullCircles(t / 17.0),
Degrees(SineWave(t / 21.0) * 35)
)
);
rndr_layout_matrix.Set(ModelMatrixf::Translation(-3.0f, 0.7f, 0.1f));
rndr.Render(oglp_layout);
rndr_layout_matrix.Set(ModelMatrixf::Translation(-8.0f,-0.7f, 0.0f));
rndr.Render(desc_layout);
rndr_layout_matrix.Set(
ModelMatrixf::Translation(-4.0f,-2.0f, 0.0f)*
ModelMatrixf::Scale(0.7f, 0.7f, 0.5f)
);
rndr.Render(time_layout);
}
void Reshape(void)
{
using namespace oglplus;
gl.Viewport(Width(), Height());
rndr_projection_matrix.Set(
CamMatrixf::PerspectiveX(
Degrees(60),
Width()/Height(),
1, 60
)
);
}
void LoadNext(void)
{
typedef oglplus::text::Direction Dir;
struct {
Dir direction;
const char* text;
} lines[] = {
{Dir::LeftToRight, u8"Hello world"},
{Dir::LeftToRight, u8"Nazdar svet"},
{Dir::LeftToRight, u8"Γεια σας κόσμο"},
{Dir::LeftToRight, u8"Привет мир"},
{Dir::LeftToRight, u8"Witaj świecie"},
{Dir::LeftToRight, u8"Здравей свят"},
{Dir::LeftToRight, u8"Ahoj světe"},
{Dir::LeftToRight, u8"Moi maailma"},
{Dir::LeftToRight, u8"Bonjour tout le monde"},
{Dir::LeftToRight, u8"Hallo welt"},
{Dir::LeftToRight, u8"Բարեւ աշխարհ"},
{Dir::LeftToRight, u8"Hej världen"},
{Dir::LeftToRight, u8"Прывітанне свет"},
{Dir::LeftToRight, u8"Olá mundo"},
{Dir::LeftToRight, u8"Здраво свете"},
{Dir::LeftToRight, u8"Zdravo svet"},
{Dir::LeftToRight, u8"Hola mundo"},
{Dir::LeftToRight, u8"Merhaba dünya"},
{Dir::LeftToRight, u8"Привіт світ"},
{Dir::LeftToRight, u8"Pozdrav svijetu"},
{Dir::LeftToRight, u8"Hello világ"},
{Dir::RightToLeft, u8"مرحبا العالم"},
{Dir::LeftToRight, u8"Ciao mondo"},
{Dir::LeftToRight, u8"Здраво светот"},
{Dir::RightToLeft, u8"שלום עולם"},
{Dir::LeftToRight, u8"Hei verden"}
};
const std::size_t line_count = sizeof(lines)/sizeof(lines[0]);
layout.Set(lines[current_line].text);
rndr.SetDirection(lines[current_line].direction);
rndr_color.Set(
0.1f+GLfloat(0.8f*std::rand())/RAND_MAX,
0.3f+GLfloat(0.7f*std::rand())/RAND_MAX,
0.1f+GLfloat(0.8f*std::rand())/RAND_MAX
);
if(++current_line >= line_count)
current_line = 0;
}
void Render(void)
{
using namespace oglplus;
GLfloat t = GLfloat(FrameTime());
GLfloat i = t*0.3f;
int interval = int(i);
GLfloat f = i - GLfloat(interval);
if(prev_interval < interval)
{
LoadNext();
prev_interval = interval;
}
gl.Clear().ColorBuffer().DoIt();
rndr_opacity.Set(SineWave(f*0.5f));
rndr.SetLayoutTransform(ModelMatrixf::TranslationZ(-20.0f+16.0f*f));
rndr.Render(layout);
}