void Scene::Render(ci::Surface8u *surface) {
Surface8u::Iter iter = surface->getIter();
int width = surface->getWidth();
int height = surface->getHeight();
float aspectRatio = width / (float)height;
Color8u bgColor(25, 25, 25);
while (iter.line()) {
while (iter.pixel()) {
ColorA aaColor(0, 0, 0);
int count = 0;
int numSamples = 4;
float deltaX = 1.0f / (width * numSamples);
float deltaY = 1.0f / (height * numSamples);
for (int i = 0; i < numSamples; i++) {
for (int j = 0; j < numSamples; j++) {
float inDist = 10000.0f;
float u = iter.x()/(float)width + deltaX * i;
float v = iter.y()/(float)height + deltaY * j;
ci::Ray ray = m_camera->generateRay(u, v, aspectRatio);
aaColor += Raytrace(ray, 0, inDist, 1.0f);
count++;
}
}
ColorA color = aaColor / (float)count;
iter.r() = ci::math<float>::clamp(bgColor.r * (1.0f - color.a) + color.r * 255.0f, 0.0f, 255.0f);
iter.g() = ci::math<float>::clamp(bgColor.g * (1.0f - color.a) + color.g * 255.0f, 0.0f, 255.0f);
iter.b() = ci::math<float>::clamp(bgColor.b * (1.0f - color.a) + color.b * 255.0f, 0.0f, 255.0f);
}
//iter.line();
}
}
void RayMarcher::renderScanline( int scanline, ci::Surface8u *surface )
{
int width = surface->getWidth();
int height = surface->getHeight();
float imageAspect = width / (float)height;
Color8u backgroundColor( 0, 95, 249 );
Surface8u::Iter iter = surface->getIter( Area( 0, scanline, surface->getWidth(), scanline + 1 ) );
while( iter.pixel() ) {
ColorA color = march( mCamera->generateRay( iter.x() / (float)width, 1.0f - scanline / (float)height, imageAspect ) );
iter.r() = backgroundColor.r * ( 1.0f - color.a ) + color.r * 255;
iter.g() = backgroundColor.g * ( 1.0f - color.a ) + color.g * 255;
iter.b() = backgroundColor.b * ( 1.0f - color.a ) + color.b * 255;
}
}
void _TBOX_PREFIX_App::setup()
{
mCubeRotation.setToIdentity();
// Create a blue-green gradient as an OpenGL texture
Surface8u surface( 256, 256, false );
Surface8u::Iter iter = surface.getIter();
while( iter.line() ) {
while( iter.pixel() ) {
iter.r() = 0;
iter.g() = iter.x();
iter.b() = iter.y();
}
}
mTex = gl::Texture( surface );
}
void RayMarcher::render( ci::Surface8u *surface )
{
Surface8u::Iter iter = surface->getIter();
// transform the spheres
int width = surface->getWidth();
int height = surface->getHeight();
float imageAspect = width / (float)height;
Color8u backgroundColor( 0, 95, 249 );
while( iter.line() ) {
while( iter.pixel() ) {
ColorA color = march( mCamera->generateRay( iter.x() / (float)width, 1.0f - iter.y() / (float)height, imageAspect ) );
iter.r() = backgroundColor.r * ( 1.0f - color.a ) + color.r * 255;
iter.g() = backgroundColor.g * ( 1.0f - color.a ) + color.g * 255;
iter.b() = backgroundColor.b * ( 1.0f - color.a ) + color.b * 255;
}
iter.line();
}
}
Surface8u colorizeBodyIndex( const Channel8u& bodyIndexChannel )
{
Surface8u surface;
if ( bodyIndexChannel ) {
surface = Surface8u( bodyIndexChannel.getWidth(), bodyIndexChannel.getHeight(), true, SurfaceChannelOrder::RGBA );
Channel8u::ConstIter iterChannel = bodyIndexChannel.getIter();
Surface8u::Iter iterSurface = surface.getIter();
while ( iterChannel.line() && iterSurface.line() ) {
while ( iterChannel.pixel() && iterSurface.pixel() ) {
size_t index = (size_t)iterChannel.v();
ColorA8u color( getBodyColor( index ), 0xFF );
if ( index == 0 || index > BODY_COUNT ) {
color.a = 0x00;
}
iterSurface.r() = color.r;
iterSurface.g() = color.g;
iterSurface.b() = color.b;
iterSurface.a() = color.a;
}
}
}
return surface;
}
void ShapeContainer::update(Surface8u* _surf, int _tNow)
{
Surface8u::Iter pixelIter = _surf->getIter();
if (p_aniMode == NULL) return;
AnimationMode aniMode = *p_aniMode;
int interval = *p_interval;
float frontarea = *p_frontarea;
float backarea = *p_backarea;
float contrast = *p_contrast;
float afactor = *p_alpha;
bool showColour = *p_showColour;
// update!
for( vector<Shape>::iterator shapeIt = m_shapes.begin(); shapeIt != m_shapes.end(); ++shapeIt)
{
if (!shapeIt->m_isActive)
continue;
vector<ColorA> faceColours;
for (int i = 0; i < m_faceModes.size(); i++) {
float alpha = 1.0f;
float rc = 1.0f;
float gc = 1.0f;
float bc = 1.0f;
if (aniMode == VIDEO || aniMode == VIDEO_RADAR)
{
rc = pixelIter.r()/255.f;
gc = pixelIter.g()/255.f;
bc = pixelIter.b()/255.f;
alpha *= (rc + gc + bc) / 3.f;
}
if (aniMode == RADAR || aniMode == VIDEO_RADAR)
{
float progress = (_tNow%interval)/(float)interval;
// to be sure, add twice area size
float radarY = -max(backarea, frontarea) + progress*(14.f + max(backarea, frontarea)*2);
float factor = 0;
float diff = shapeIt->m_k - radarY;
if (diff > 0)
{
if(diff < frontarea)
factor = 1 - diff/frontarea;
}
if (diff <= 0)
{
if(diff > -backarea)
factor = 1 - diff/-backarea;
}
alpha *= factor;
}
if (!pixelIter.pixel()) {
if(pixelIter.line())
{
pixelIter.pixel(); // reset x to 0
} else {
return;
}
}
ColorA col = ColorA(0, 0, 0, 0);
alpha = (alpha - .5f)*contrast + .5f;
if(alpha < 0) alpha = 0;
if(alpha > 1) alpha = 1;
alpha *= afactor;
switch (*m_faceModes[i]) {
case ACTIVE:
col = (showColour) ? ColorA(rc, gc, bc, alpha) : ColorA( 1.0f, 1.0f, 1.0f, alpha);
break;
case DICHROIC1:
col = ColorA(0.3f, 0.8f, 1.0f, .1f);
break;
case DICHROIC2:
col = ColorA(1.0f, 0.8f, 0.3f, .1f);
break;
case GLASS:
col = ColorA(1.0f, 1.0f, 1.0f, .015f);
break;
case NONE:
col = ColorA(1.0f, 1.0f, 1.0f, 0.f);
break;
default:
col = ColorA(1.0f, 1.0f, 1.0f, 0.f);
break;
}
faceColours.push_back(col);
}
shapeIt->updateFaces(faceColours);
}
}