I found in manim there are two kinds of way to display animation, one way is to useself.play()and by adding run_time = Xin kwargs, the speed of animation can be set and the animation will finish in X seconds.
But I found another way to display by first adding an object with updater using self.add() and wait it to display using self.wait().
How to control the speed if use self.add() and self.wait()?
There is a demo to show the case
BTW, I'm using manimgl instead of community version in order to achieve real time rendering.
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In a Gtk::DrawingArea I have a pixbuf showing the layout of my house. I draw the measured room temperatures on it. I also would like to draw the state of my shutters on it with some lines. When and only when a shutter changes its state, I would love to make these lines blink with a time offset of 1 second. I assume, I would have to make use of a timeout triggered every second to redraw the lines for the shutters. I am already making use of a timeout every 2 minutes to fetch new data from the internet to be shown on my screen. I could set up the timeout to get called every second and then I would have to remember, when my last 2-minute fetch was accomplished, to trigger the next one on time. Also, if my shutters are not changing state like in 99.9 percent of their lifetime, I do not need blinking. It feels over engineered to me to call a method every second just to make a line blink. Is there a smarter way to do this?
I could post a lot of code here, but I think that would not help anybody understand my question. I am helpful for any hint.
I did a try but when I touch to focus the preview is flashing. I dit it by trigger focus and reapply current ISO and speed at onCaptureCompleted. What wrong with it? Thanks
Why are you reapplying ISO and exposure time? If you're staying with auto-exposure, it'll keep working automatically during and after the AF trigger.
So generally, just set CONTROL_AF_TRIGGER to START for a single capture request (not a repeating request!), keeping your other preview parameters the same.
I’ve been developing an iOS app using Swift 4 but recently (today) decided to switch to Flutter/dart after hearing about its capabilities.
In my iOS app, I have a moving background of waves (actual waves when you think of an ocean).
The width of the the wave .png is 1606 units and I animated it in a way where it will translate from right to left 265 units in 1 second, then it repeats itself. This way, the waves are moving continuously when in reality, it’s only a fraction of the entire png repeating itself.
I needed this same background to apply to all ViewControllers (screens) in the app and I did this by sending the last known x value right before the transition through a segue (transition between viewcontrollers, I believe it’s a “route” for dart?) and used this value as the initial position of the waves in the next ViewController. When I swipe up or down, to move to different view controllers, the waves would also move accordingly.
For some reason, the animations were a bit choppy but I’d say 80% of the time, it was perfectly smooth. I need it to be 100% for when I release my app tho.
How would I go about accomplishing this type of animation in Dart?
For animations, Flare seems very promising and I’m kind of steering towards using that to accomplish my goal but I’d like to hear any advice on how I should approach this.
The animation performance depends on how it's implemented. Without a minimal repro, it'll be challenging to figure out the issue. Though other options that you may consider to animate the background is by using AnimatedPositioned widget. Using this should help manipulate the position of widgets displayed on screen.
Another one is by using Adobe After Effects animations and rendering it with lottie plugin on your app.
I am using AudioKit for an iOS app. Right now everything is working well for me. However I am having trouble customizing the AKNodeOutputPlot animation. When using AKNodeOutputPlot how do you increase its speed? Basically it takes x seconds to fill its view. How can I get it do it in x/2 seconds with a view of the same size?
Sounds like you're using a rolling plot, in which case do:
plot.setRollingHistoryLength(<#T##historyLength: Int32##Int32#>)
I am creating a game using cocos2dx 2.1.4. Its FPS drops continuously , and never recover.
Please find the details as follows
Background about the way I am doing things:-
Its game about scrolling down some shapes, each shape is made up of some square blocks.I have 7 kind of blocks. All loaded in a Sprite Sheet and using these blocks from this sprite sheet I create a shape.
A level file is consist of these shapes. I load two levels at the same time one onscreen and another off screen to make it seamless scrolling. For loading two levels at the same time I used two different CCSprite game batch nodes as :-
CCSpriteFrameCache::sharedSpriteFrameCache()->addSpriteFramesWithFile("56blackglow.plist");
_gameBatchNode1 = CCSpriteBatchNode::create("56blackglow.png", 200);
_gameBatchNode1->retain();
this->addChild(_gameBatchNode1,kForeground);
_gameBatchNode2= CCSpriteBatchNode::create("56blackglow.png", 200);
_gameBatchNode2->retain();
this->addChild(_gameBatchNode2,kForeground);
The problem I am facing is that as I keep on playing the game frame rate drops continuously , from 60 fps till 10 fps and never recovers or might recover in near future , as I observed for 20 minutes but its too much time to wait.
My observations:-
1> I used Time profiler it shows maximum time is in draw() calls. Also if I play game very fast the peak of time increases in track, that should be fine as I am giving more work to do, but once a peak is attained it remains approximately at that height only, even if I leave the game Idle. Is it normal ? According to me it should have returned to its normal peak once the current work is done.
2> Some where I thought its happening because I used two batch nodes and removing its children on a user touch immediately might causing it slow but then after removing the children it should run normal. to give an idea is it ok to remove 10 children from batch node immediately ? some guys say its very slow process. Just to check if this causing problem , I did :-
Instead of removing them I just set visibility of the children to false.But still FPS drops and never recovers.
Please share your thoughts on this.
Though SpriteBatchNodes are generally quite good for drawing a lot of elements efficiently, I think there are best used for static/not-so-dynamic elements. In your case, if you have a lot of elements which go out of the screen but are still alive the draw() function will have to make some checks, thus hogging your performance (even if you set isVisible(false); explicitly, it still nedds to be checked).
In your case I think it would be better if you simply added new shapes outside of screen via some time-based function, and if they scroll outside of view simply remove them from scene, without using batchNodes.
Just found that with every touch, I am adding 8 new sprites to the layer, and its adding every time I touch . So with time I am giving more and more work to do. This is the problem
Actually I wanted to replace the sprite at 8 places with a touch, the way I was doing every time :-
_colorBottom1=CCSprite::createWithSpriteFrameName(png[0]);
this->addChild(_colorBottom1,kForeground);
_colorBottom1->setPosition(ccp((_colorPanelLeftPad)*_blockWidth,_blockWidth));
It was causing this sprite to be added with every touch.
but it should have been (Replace the texture instead of creating the Sprite again):-
CCSpriteFrame *frame1=CCSpriteFrameCache::sharedSpriteFrameCache()->spriteFrameByName(png0);
_colorBottom1->setDisplayFrame(frame1);