blit

I have a UIView subclass onto which I need to blit a UIImage . There are several ways to skin this cat depending on which series of APIs you prefer to use, and I'm interested in the fastest. Would it be UIImage 's drawAtPoint or drawRect ? Or perhaps the C-based CoreGraphics routines, or something else? I have no qualms about altering my source image data format if it'll make the blitting that much faster. To describe my situation my app has anywhere from ~10 to ~200 small UIView s (64x64), a subset of which will need to be redrawn based on user interaction. My current implementation is a call

For some reason, I can't get pyglet to draw sprites. Here's my code: import pyglet game = pyglet.window.Window(640, 480, "I'm a window") batch = pyglet.graphics.Batch() pyglet.resource.path = ["."] pyglet.resource.reindex() image = pyglet.resource.image("hextile.png") pyglet.sprite.Sprite(image, x=200, y=300, batch=batch) pyglet.text.Label('DING', font_name='Arial', font_size=24, x=100, y=100, batch=batch) @game.event def on_draw(): game.clear() batch.draw() #image.blit(0, 0) pyglet.app.run() Now, when I draw the batch, the text label is shown correctly. I see "DING" on the window. However,

Is there any way to clear a surface from anything that has been blitted to it? When I dont care about performance, I use: mysurface.fill((0,0,0)) Which will draw the specified color (black in this case) across the entire surface. Is that what you meant by "clear"? Oh, and you need, of course, to "flip" the surface after doing this for it to be visible on the screen. I don't know what API you're using, so here's a vague answer: In virtually all cases "clearing" a surface simply blits a coloured quad of the same size as the surface onto it. The colour used is whatever you want your clear colour

EDIT/TL;DR: It looks like there is a matplotlib.backends.backend_qt4.TimerQT object that hold a reference to my FuncAnimation object. How can I remove it to free the FuncAnimation object? 1 - A little context I'm trying to animate a plot generated with matplotlib. I use matplotlib.animation.FuncAnimation. This animated plot is contained in a FigureCanvasQTAgg (matplotlib.backends.backend_qt4agg), ie. a PyQt4 widget. class ViewerWidget(FigureCanvasQTAgg): def __init__(self, viewer, parent): # viewer is my FuncAnimation, encapsulated in a class self._viewer = viewer FigureCanvasQTAgg.__init__

In the SDL wiki it says Use this function to perform a fast blit from the source surface to the destination surface. However that doesn't help me much. What does the term surface blitting mean in this context? Radomir Dopieralski Basically it means copying the image from one surface to another -- possibly cropped and shifted. Blitting means bit-boundary block transfer as defined by Wikipedia or Block Information Transfer , well known among the Pygame developers. Assume you have a Surface(your screen). And you would like to draw a circle on the screen. So what you want to do is, draw the circle

I'm making a game and I need to blit my objects inside the area of a specific image. I don't want to need my surface to blit these images. Is it possible? (I'm using pygame) It would be better in the future if you would explain what you are trying to do a bit better since it would give you more answers :) From what I have understood you want to blit an image onto another image: For this code to work the following premises are set: The folder which contains the program also contains the arbritary images named testimage.png and testimage0.jpg PyGame is installed I have written the following