Flake::Flake( Storm* storm ) {
_storm = storm;
_trail = new va::VertexShape();
_trail->setMode(GL_TRIANGLE_STRIP);
addChild(_trail);
setPosition(va::random(600,700), va::random(600,700),0);
_loc = getPosition();
_vel.set(va::random(0.001,0.01), va::random(0.001,0.01),0);
// adding 40 vertices
for (unsigned int i=0; i<20; ++i) {
_trail->addVertex(i, 0, 0);
_trail->addVertex(i, 10, 0);
}
// adding 40 vertex colors
for (unsigned int i=0; i<20; ++i) {
_trail->addVertexColor(0, 0, 0, 1-(i/20.0f));
_trail->addVertexColor(0, 0, 0, 1-(i/20.0f));
}
disableDepthTest();
disableLighting();
enableBlending();
_maxvelocity = 10.0;
_maxsteer = 3.0;
_r = 10;
}
void OpenGL::setShadingMode( ShadingMode shadingMode )
{
LOCK
currentShadingMode_ = shadingMode;
switch( shadingMode ){
case ShadingMode::SOLID_LIGHTING_AND_TEXTURING:
setProgram( ShaderProgramType::DEFAULT );
enableLighting();
enableTexturing();
break;
case ShadingMode::SOLID_LIGHTING:
setProgram( ShaderProgramType::DEFAULT );
enableLighting();
disableTexturing();
break;
case ShadingMode::SOLID_PLAIN:
setProgram( ShaderProgramType::DEFAULT );
disableLighting();
disableTexturing();
break;
case ShadingMode::NORMALS:
setProgram( ShaderProgramType::NORMALS );
break;
}
}
void BlendShapeViewer::paintGL() {
makeCurrent();
glClearColor(1, 1, 1, 0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_TRUE);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glPushMatrix();
// setup the viewing matrices
setupViewingParameters();
enableLighting();
glColor4f(0, 0.5, 1.0, 1.0);
mesh.draw();
//drawGenreatedMesh();
glColor4f(0, 0, 0, 0.25);
targetMesh.drawFrame();
if( showLandmarks )
drawLandmarks();
disableLighting();
//drawMeshToFBO();
glPopMatrix();
glDisable(GL_CULL_FACE);
}
//------------------------------------------------------------------------------------------------------------------------------------
// called when we want to draw the 3D data in our app.
//------------------------------------------------------------------------------------------------------------------------------------
void draw3D()
{
// draw the grid on the floor
setColour(0.25f, 0.25f, 0.25f);
for(float i = -10.0f; i <= 10.1f; i += 1.0f)
{
Vec3 zmin(i, 0, -10);
Vec3 zmax(i, 0, 10);
Vec3 xmin(-10, 0, i);
Vec3 xmax(10, 0, i);
drawLine(xmin, xmax);
drawLine(zmin, zmax);
}
// If using the GPU to compute the lighting (which is what you want to do!)
if(!g_manualLighting)
{
// turn on lighting
enableLighting();
// set the diffuse material colour (this will be modulated by the effect of the lighting)
setColour(1.0f, 1.0f, 1.0f);
// draw the cube geometry
drawPrimitives(g_pointsVN, 24, kQuads);
// turn off lighting
disableLighting();
}
else
{
// otherwise, compute the lighting manually. Don't ever do this in practice! It's insane! (But it may be useful for educational purposes)
// The direction from the vertex to the light (effectively sunlight in this case!).
Vec3 L(-0.6f, 1.0f, -0.2f);
// make sure L has been normalised!
L = normalize(L);
// start drawing some quads
begin(kQuads);
// loop through each vertex normal
for(int i = 0; i < 24; ++i)
{
// compute N.L
// Make sure we clamp this to zero (so that we ignore any negative values).
float N_dot_L = std::max(dot(L, g_pointsVN[i].n), 0.0f);
// the ambient material colour (always gets added to the final colour)
Vec3 Ka(0.2f, 0.2f, 0.2f);
// the diffuse material colour
Vec3 Kd(1.0f, 1.0f, 1.0f);
// Compute the final colour
Vec3 colour = Ka + (Kd * N_dot_L);
// set the vertex colour
setColour(colour);
// specify the vertex
addVertex(g_pointsVN[i].v);
}
// finish drawing our quads
end();
}
// if we are displaying normals
if(g_displayNormals)
{
// make colour pink
setColour(1.0f, 0.0f, 1.0f);
// loop through each vertex
for(int i = 0; i < 24; ++i)
{
// compute an offset (along the normal direction) from the vertex
Vec3 pn = g_pointsVN[i].v + (g_pointsVN[i].n * 0.2f);
// draw a line to show the normal
drawLine(g_pointsVN[i].v, pn);
}
}
}
