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Stabilized implementation of fading control, with change of view and

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trigger of smooth transition. Bugfix with image processing shader
change.
This commit is contained in:
brunoherbelin
2020-07-30 23:24:59 +02:00
parent c9882190b0
commit 066b40723f
9 changed files with 195 additions and 66 deletions
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158
View.cpp
View File

@@ -99,12 +99,10 @@ std::pair<Node *, glm::vec2> View::pick(glm::vec2 P)
// picking visitor found nodes?
if ( !pv.picked().empty()) {
// select top-most Node picked
pick = pv.picked().back();
Log::Info("picked %d", pick.first->id());
}
return pick;
}
@@ -236,16 +234,35 @@ MixingView::MixingView() : View(MIXING), limbo_scale_(1.3f)
mixingCircle_->shader()->color = glm::vec4( 1.f, 1.f, 1.f, 1.f );
scene.bg()->attach(mixingCircle_);
Symbol *dot = new Symbol(Symbol::POINT, glm::vec3(0.f, 1.f, 0.1f));
dot->scale_ = glm::vec3( 0.33f, 0.33f, 1.f);
dot->color = glm::vec4( COLOR_FRAME, 1.f );
scene.bg()->attach(dot);
tmp = new Mesh("mesh/circle.ply");
tmp->shader()->color = glm::vec4( COLOR_FRAME, 0.9f );
scene.bg()->attach(tmp);
// Mixing scene foreground
tmp = new Mesh("mesh/disk.ply");
tmp->scale_ = glm::vec3(0.033f, 0.033f, 1.f);
tmp->translation_ = glm::vec3(0.f, 1.f, 0.f);
tmp->shader()->color = glm::vec4( COLOR_FRAME, 0.9f );
scene.fg()->attach(tmp);
button_white_ = new Disk();
button_white_->scale_ = glm::vec3(0.026f, 0.026f, 1.f);
button_white_->translation_ = glm::vec3(0.f, 1.f, 0.f);
button_white_->color = glm::vec4( 0.85f, 0.85f, 0.85f, 1.0f );
scene.fg()->attach(button_white_);
tmp = new Mesh("mesh/disk.ply");
tmp->scale_ = glm::vec3(0.033f, 0.033f, 1.f);
tmp->translation_ = glm::vec3(0.f, -1.f, 0.f);
tmp->shader()->color = glm::vec4( COLOR_FRAME, 0.9f );
scene.fg()->attach(tmp);
button_black_ = new Disk();
button_black_->scale_ = glm::vec3(0.026f, 0.026f, 1.f);
button_black_->translation_ = glm::vec3(0.f, -1.f, 0.f);
button_black_->color = glm::vec4( 0.1f, 0.1f, 0.1f, 1.0f );
scene.fg()->attach(button_black_);
slider_root_ = new Group;
scene.fg()->attach(slider_root_);
@@ -308,20 +325,72 @@ void MixingView::update(float dt)
View::update(dt);
// a more complete update is requested
// for mixing, this means restore position of the fading slider
if (View::need_deep_update_) {
// reverse calculate angle from fading
//
// Set slider to match the actual fading of the session
//
float f = Mixer::manager().session()->fading();
float angle = SIGN(slider_root_->rotation_.z) * asin(f) * 2.f;
// move slider
slider_root_->rotation_.z = angle;
// reverse calculate angle from fading & move slider
slider_root_->rotation_.z = SIGN(slider_root_->rotation_.z) * asin(f) * 2.f;
// visual feedback on mixing circle
f = 1.f - f;
mixingCircle_->shader()->color = glm::vec4(f, f, f, 1.f);
}
else {
//
// Set session fading to match the slider angle
//
// calculate fading from angle
float f = sin( ABS(slider_root_->rotation_.z) * 0.5f);
// apply fading
if ( ABS_DIFF( f, Mixer::manager().session()->fading()) > EPSILON )
{
// apply fading to session
Mixer::manager().session()->setFading(f);
// visual feedback on mixing circle
f = 1.f - f;
mixingCircle_->shader()->color = glm::vec4(f, f, f, 1.f);
}
}
}
std::pair<Node *, glm::vec2> MixingView::pick(glm::vec2 P)
{
// get picking from generic View
std::pair<Node *, glm::vec2> pick = View::pick(P);
// deal with internal interactive objects and do not forward
if ( pick.first == button_white_ || pick.first == button_black_ ) {
RotateToCallback *anim = nullptr;
if (pick.first == button_white_)
anim = new RotateToCallback(0.f, 500.f);
else
anim = new RotateToCallback(SIGN(slider_root_->rotation_.z) * M_PI, 500.f);
// reset & start animation
slider_root_->update_callbacks_.clear();
slider_root_->update_callbacks_.push_back(anim);
// capture this pick
pick = { nullptr, glm::vec2(0.f) };
}
return pick;
}
View::Cursor MixingView::grab (Source *s, glm::vec2 from, glm::vec2 to, std::pair<Node *, glm::vec2> pick)
{
// unproject
@@ -344,21 +413,11 @@ View::Cursor MixingView::grab (Source *s, glm::vec2 from, glm::vec2 to, std::pai
angle = M_PI;
// animate slider (rotation angle on its parent)
slider_root_->rotation_.z = angle;
// calculate fading from angle
float fading = sin( ABS(angle) * 0.5f);
// apply fading to session
Mixer::manager().session()->setFading(fading);
// visual feedback on mixing circle
fading = 1.f - fading;
mixingCircle_->shader()->color = glm::vec4(fading, fading, fading, 1.f);
slider_root_->rotation_.z = angle;
// cursor feedback
std::ostringstream info;
info << "Global opacity " << int(fading * 100.0) << " %";
info << "Global opacity " << 100 - int(Mixer::manager().session()->fading() * 100.0) << " %";
return Cursor(Cursor_Hand, info.str() );
}
@@ -980,6 +1039,23 @@ TransitionView::TransitionView() : View(TRANSITION), transition_source_(nullptr)
void TransitionView::update(float dt)
{
// update scene
View::update(dt);
// a more complete update is requested
if (View::need_deep_update_) {
// update rendering of render frame
FrameBuffer *output = Mixer::manager().session()->frame();
if (output){
float aspect_ratio = output->aspectRatio();
for (NodeSet::iterator node = scene.bg()->begin(); node != scene.bg()->end(); node++) {
(*node)->scale_.x = aspect_ratio;
}
output_surface_->setTextureIndex( output->texture() );
}
}
// Update transition source
if ( transition_source_ != nullptr) {
@@ -1001,8 +1077,6 @@ void TransitionView::update(float dt)
transition_source_->group(View::MIXING)->translation_.x = CLAMP(f, -1.f, 0.f);
transition_source_->group(View::MIXING)->translation_.y = 0.f;
// reset / no fading
Mixer::manager().session()->setFading( 0.f );
}
// fade to black
else
@@ -1016,7 +1090,7 @@ void TransitionView::update(float dt)
if (Settings::application.transition.profile == 0)
f = ABS(2.f * d + 1.f); // linear
else {
f = ( 2 * d + 1.f); // quadratic
f = ( 2.f * d + 1.f); // quadratic
f *= f;
}
Mixer::manager().session()->setFading( 1.f - f );
@@ -1030,22 +1104,6 @@ void TransitionView::update(float dt)
}
// update scene
View::update(dt);
// a more complete update is requested
if (View::need_deep_update_) {
// update rendering of render frame
FrameBuffer *output = Mixer::manager().session()->frame();
if (output){
float aspect_ratio = output->aspectRatio();
for (NodeSet::iterator node = scene.bg()->begin(); node != scene.bg()->end(); node++) {
(*node)->scale_.x = aspect_ratio;
}
output_surface_->setTextureIndex( output->texture() );
}
}
}
@@ -1108,6 +1166,20 @@ void TransitionView::attach(SessionSource *ts)
Group *tg = transition_source_->group(View::TRANSITION);
tg->visible_ = true;
scene.ws()->attach(tg);
// in fade to black transition, start transition from current fading value
if ( !Settings::application.transition.cross_fade) {
// reverse calculate x position to match actual vading of session
float d = 0.f;
if (Settings::application.transition.profile == 0)
d = -1.f + 0.5f * Mixer::manager().session()->fading(); // linear
else {
d = -1.f - 0.5f * ( sqrt(1.f - Mixer::manager().session()->fading()) - 1.f); // quadratic
}
transition_source_->group(View::TRANSITION)->translation_.x = d;
}
}
}