int IGLUOBJReader::Draw( IGLUShaderProgram::Ptr &shader )
{
// If the shader in question is not already enabled, enable it!
bool wasShaderBound = shader->IsEnabled();
if (!wasShaderBound)
shader->Enable();
// We may already have the vertex array setup to work with this shader.
// Check that. If not, re-set up the vertex array.
//if (m_shaderID != shader->GetProgramID())
if (m_shaderID == 0)
{
m_shaderID = shader->GetProgramID();
int err = SetupVertexArray( shader );
if (err != IGLU_NO_ERROR)
return err;
}
m_vertArr->DrawElements( GL_TRIANGLES, 3* GetTriangleCount() );
// If we started with the shader disabled, disable it again now.
if (!wasShaderBound)
shader->Disable();
return IGLU_NO_ERROR;
}
// 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() );
}