clipping

问题 I have a background image that has background-size:cover; applied to it and then a series of divs overlaid which I would like to become individual clipping masks. I've looked at the feature clip: rect(20px, 20px, 20px, 20px,); however as the divs are brought in through a CMS system, it will be inappropriate to define set sizes. Is there a way of setting the div with a clipping mask property so that it clips the image anywhere the div is placed on the page? I don't particularly want to use an

问题 I am trying to apply a clipping mask to a geom from a ggplot to mask part of the data, but keep the axis, the grid, other geoms and the legend visible. I do not want to create a specific plot, and therefore I am not looking for a work-around with polygons masking some parts of the plot. This is the kind of design I would like to emulate (the mask, not necessarily theme, I now how to do that): (source) See also this example One could argue that I could filter the data that is not contained in

问题 I have an ItemsControl in a ScrollViewer . The items in the ItemsControl are expanded to a DataTemplate which basically consists of an Adorner . Now the problem is, when scrolling, the Visual Children of the Adorner are visible outside the ScrollViewer . Lets say I scroll from the Horizontal Offset 0 to 100, the Visual Children of the Adorner move to the left and are visible next to the ScrollViewer , although they should be hidden. Setting ClipToBounds on the ItemsControl or the ScrollViewer

问题 I need to create a round ProgressBar template. ControlTemplate : <ControlTemplate TargetType="{x:Type ProgressBar}"> <Grid x:Name="TemplateRoot" SnapsToDevicePixels="true"> <Rectangle x:Name="PART_Track" Margin="1" Fill="White" /> <Border x:Name="PART_Indicator" HorizontalAlignment="Left" Margin="1" > <Grid x:Name="Foreground" > <Rectangle x:Name="Indicator" Fill="{TemplateBinding Background}" /> <Grid x:Name="Animation" ClipToBounds="true" > <Rectangle x:Name="PART_GlowRect" Fill="#FF86C7EB"

问题 Functions like numpy.random.uniform() return floating point values between a two bounds, including the first bound but excluding the top one. That is, numpy.random.uniform(0,1) may yield 0 but will never result in 1. I'm taking such numbers and processing them with a function that sometimes returns results outside of the range. I can use numpy.clip() to chop values outside of the range back to 0-1, but unfortunately that limit is inclusive of the top number. How do I specify "the number

问题 I have one SpriteBatch in my game, between whose batch.begin() and batch.end() I draw... a large static background image several game sprites I want to clip the area in which the sprites are seen, which I've read is done using ScissorStack . The problem is that ScissorStack appears to clip the entire SpriteBatch that's sent to the GPU. The result is that it clips my game sprites and the background image. Question: Must I have two separate batch.begin() and batch.end() cycles, one without

问题 I have an image and I am clipping the mouse area using an Ellipse in which I am quite successful. But I want that ellipse to be a part of my user control and the user control should move along with my finger and the clipping Ellipse should be inside the user control . The complete project can be downloaded from here My UserControl'sXAML is <UserControl x:Class="App78.Magnifier" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006

问题 I have seen some iPad apps that fill the screen (e.g. Stanza) or have squared off corners under the status bar (e.g. the iPod player has square corners at the top; can't tell at the bottom). Anyone know how this is done? It seems that, by default, the top-level UIWindow has a clipping region applied, as any subviews I place in that window get clipped off in those corners. If that is the case, is there a way to get rid of this? BTW, the clipping only seems to be there on the iPad, not on my

问题 a.k.a. Polygon clipping algorithm in 3D a.k.a. Finding the collision manifold between 2 colliding polygons Most algorithms for polygon clipping are described in detail for 2D and described as being extendable to 3D but without details. For example the sutherland-hodgman clipping algorithm Having been unable to find any 3D implementations or pseudo code on the internet I am now asking here (and attempting to answer my own question) The algorithm would take two shapes such as those shown below:

问题 Looking to create a bar chart with an irregular, colored threshold field in the background, so that each data point has its own individual set of min/max thresholds, which ultimately would look something like this: http://dcalvitti.webs.com/plant/SAMPLE.png Looked at D3 examples like this one: http://bl.ocks.org/mbostock/4062844 Can the latter example be manipulated to look more like the image I created? Thanks in advance.. 回答1: The graph shown in your sample image is actually much easier