void DrawPoint ( vec2 coord, float width, colour col )
{
SetShader("Primitive");
DisableTexturing();
if (col.alpha() < 1.0f)
{
EnableBlending();
}
else
{
DisableBlending();
}
SetColour(col);
Matrices::SetViewMatrix(matrix2x3::Identity());
Matrices::SetModelMatrix(matrix2x3::Identity());
float quad[8] = { coord.X(), coord.Y(),
coord.X(), coord.Y() - 2,
coord.X() + 2, coord.Y() - 2,
coord.X() + 2, coord.Y() };
glVertexPointer ( 2, GL_FLOAT, 0, quad );
glDrawArrays ( GL_QUADS, 0, 4 );
/* ¡WARNING! IMMEDIATE MODE! ENTER AT YOUR OWN RISK */
// glBegin(GL_POINTS);
// glVertex2f(coord.X(), coord.Y());
// glEnd();
}
void SetCamera ( vec2 corner1, vec2 corner2, float rotation )
{
matrix2x3 projection ( matrix2x3::Ortho(corner1.X(), corner2.X(), corner1.Y(), corner2.Y()) );
if (fabs(rotation) > 0.00004f)
projection *= matrix2x3::Rotation(rotation);
Matrices::SetProjectionMatrix(projection);
cameraCorner1 = corner1;
cameraCorner2 = corner2;
}
bool IsCulled ( vec2 position, float radius )
{
if ((position.X() + radius) < cameraCorner1.X())
return true;
if ((position.X() - radius) > cameraCorner2.X())
return true;
if ((position.Y() + radius) < cameraCorner1.Y())
return true;
if ((position.Y() - radius) > cameraCorner2.Y())
return true;
return false;
}
void SetListener(vec2 pos, vec2 vel)
{
ALfloat fpos[] = {pos.X(), pos.Y(), 0.0f};
ALfloat fvel[] = {vel.X(), vel.Y(), 0.0f};
alListenerfv(AL_POSITION, fpos);
alListenerfv(AL_VELOCITY, fvel);
if (vel.ModulusSquared() > 0.2f)
{
forientation[0] = fvel[0];
forientation[1] = fvel[1];
}
alListenerfv(AL_ORIENTATION, forientation);
}
void PlaySoundPositional(const std::string& name, vec2 pos, vec2 vel, float gain)
{
ALfloat fpos[] = {pos.X(), pos.Y(), 0.0f};
ALfloat fvel[] = {vel.X(), vel.Y(), 0.0f};
ALuint buf = GetSound(name);
ALuint source = GetFreeSource();
alSourcei(source, AL_BUFFER, buf);
alSourcei(source, AL_SOURCE_RELATIVE, AL_FALSE);
alSourcefv(source, AL_POSITION, fpos);
alSourcefv(source, AL_VELOCITY, fvel);
alSourcef(source, AL_REFERENCE_DISTANCE, 50.0);
alSourcef(source, AL_GAIN, gain);
alSourcePlay(source);
}
vec2 matrix2x3::operator* ( const vec2& srcv2 ) const
{
float ix, iy, ox, oy;
ix = srcv2.X();
iy = srcv2.Y();
ox = (ix * _m11) + (iy * _m12) + _tX;
oy = (ix * _m21) + (iy * _m22) + _tY;
return vec2(ox, oy);
}
void DrawTriangle ( const vec2 point1, const vec2 point2, const vec2 point3, colour col )
{
SetShader("Primitive");
DisableTexturing();
if (col.alpha() < 1.0f)
{
EnableBlending();
}
else
{
DisableBlending();
}
SetColour(col);
Matrices::SetViewMatrix(matrix2x3::Identity());
Matrices::SetModelMatrix(matrix2x3::Identity());
float real_triangle[6] = { point1.X(), point1.Y(),
point2.X(), point2.Y(),
point3.X(), point3.Y() };
glVertexPointer(2, GL_FLOAT, 0, real_triangle);
glDrawArrays(GL_POLYGON, 0, 3);
}
void DrawLine ( vec2 coordinate1, vec2 coordinate2, float width, colour col )
{
SetShader("Primitive");
DisableTexturing();
if (col.alpha() < 1.0f)
{
EnableBlending();
}
else
{
DisableBlending();
}
glLineWidth(width);
Matrices::SetViewMatrix(matrix2x3::Identity());
Matrices::SetModelMatrix(matrix2x3::Identity());
SetColour(col);
float vertices[4] = { coordinate1.X(), coordinate1.Y(),
coordinate2.X(), coordinate2.Y() };
glVertexPointer ( 2, GL_FLOAT, 0, vertices );
glDrawArrays ( GL_LINES, 0, 2 );
}
void PlaySoundPositional(const std::string& name, vec2 pos, vec2 vel, float gain)
{
ALfloat fpos[] = {pos.X(), pos.Y(), 0.0f};
ALfloat fvel[] = {vel.X(), vel.Y(), 0.0f};
ALuint buf = GetSound(name);
ALuint source = GetFreeSource();
alSourcei(source, AL_BUFFER, buf);
alSourcei(source, AL_SOURCE_RELATIVE, AL_FALSE);
alSourcefv(source, AL_POSITION, fpos);
alSourcefv(source, AL_VELOCITY, fvel);
alSourcef(source, AL_REFERENCE_DISTANCE, 50.0);
alSourcef(source, AL_GAIN, gain);
alSourcePlay(source);
#ifndef NDEBUG
if (alGetError())
LOG("Sound", LOG_ERROR, "OpenAL error");
const ALchar* err = alureGetErrorString();
if (strcmp(err, "No error"))
{
LOG("Sound", LOG_ERROR, "ALURE error: %s", err);
exit(1);
}
#endif
}
// Draw
void display ( void )
{
int j=0;
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glLineWidth( GLfloat(lineWidth) );
if (!useErrors)
{
// Bind and setup the shader
draw->Enable();
draw["xRange"] = vec2( 330.0f, 843.0f );
draw["yRange"] = vec2( -0.13f, 2.05f );
draw["useXYZ"] = vec3( displayX ? 1.0f : 0.0f,
displayY ? 1.0f : 0.0f,
displayZ ? 1.0f : 0.0f );
// For each curve, check if it's selected to be display, if so, draw it
for (uint i=0; i<drawableCurves.Size(); i++)
{
// Check if this curve was selected to be drawn
if ( curveSelection[i]->GetValue() )
{
draw["xColor"] = colorArr[j++];
draw["yColor"] = colorArr[j++];
draw["zColor"] = colorArr[j++];
drawableCurves[i]->DrawArrays( GL_LINE_STRIP, 0, 471 );
}
}
draw->Disable();
// After drawing the curve, draw the axes
drawAxes->Enable();
axes->DrawArrays( GL_LINES, 0, 38 );
drawAxes->Disable();
}
else
{
// Bind and setup the shader
draw->Enable();
draw["xRange"] = vec2( 330.0f, 843.0f );
draw["yRange"] = vec2( -0.25f, 0.25f );
draw["useXYZ"] = vec3( displayX ? 1.0f : 0.0f,
displayY ? 1.0f : 0.0f,
displayZ ? 1.0f : 0.0f );
// For each curve, check if it's selected to be display, if so, draw it
for (uint i=0; i<errorCurves.Size(); i++)
{
// Check if this curve was selected to be drawn
if ( curveSelection[i]->GetValue() )
{
draw["xColor"] = colorArr[j++];
draw["yColor"] = colorArr[j++];
draw["zColor"] = colorArr[j++];
errorCurves[i]->DrawArrays( GL_LINE_STRIP, 0, 471 );
}
}
draw->Disable();
}
// Draw the labels
for (int i=0; i<10; i++)
IGLUDraw::DrawColorText( IGLU_FONT_VARIABLE,
int(textOffsetFactor.X()*labels[i].x),
int(textOffsetFactor.Y()*labels[i].y),
color::Gray80, labels[i].name, textOffsetFactor.X() );
}