clipping

I'm writing a flight simulator and got stuck with the classic problem of this genre: the near plane of the viewing frustum must be close enough to make aircraft cockpit visible, the far plane has to be far away to enable visible distances with up to 40km. The visibility distance or near/far ratio is indeed beyond the z-buffer precision ability of opengl and distant objects flicker violently. This is the place a fancy 3d engine leaves you alone with your problem and you need a true knowledge of opengl :). Probably i found the right way to fix the problem (OpenGL experts correct me if i'm wrong)

How can I rotate an Bitmap a given number of degrees while maintaining the area of the original bitmap. ie, what I rotate a bitmap of Width:100,Height:200, my end result will be a bigger image but the rotated portion will still have an area of 100*200 The graphics transform function is perfect for this. Create a new bitmap of the size you want, create a graphics object based off that bitmap, apply the transform then draw onto the canvas (graphics.drawimage(original_image)). Here is a much better example than I can give at this time. And Bobpowell.net is a site I usually reference back to for

I am trying to use the CSS clip-path attribute to apply an SVG clip-path to some elements in a page. For example, HTML (note that clipPathUnits="objectBoundingBox" allows the circle to be expressed in fractions of the containing element size): setTimeout(function(){ $('.circle:first div').addClass('clipped'); setTimeout(function(){ $('.circle:nth-of-type(2) div').addClass('clipped'); }, 2000); }, 2000); .circle { width: 100px; height: 100px; overflow: hidden; margin-bottom: 10px; } .circle div { width: 100%; height: 100%; background: red; position: relative; } .clipped { -webkit-clip-path: url

I'm using the clip-path property to shape my block element. clip-path: polygon(0 0, 100% 0, 100% 100px, 50% 100%, 0 100px); I would like to put a "drop shadow" in that element. So, I've tried some techniques, like: box-shadow: 0 15px 30px 0 rgba(0, 0, 0, 0.5); Or... filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.5)); See my test environment on CodePen. Is it possible with CSS or SVG? As it was said in the comments, you need 2 nested elements for this, the inner for the clipping and the outer for the shadow. body { background-color: gray; } .navigation { filter: drop-shadow(0 15px 30px rgba(0,

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 iPod Touch (at least, not in the older OS version I'm running on there). Following up: I even created the

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: And would output the intersection of the two shapes as shown below: Note that although the Sutherland

I'm trying to understand the paper "Clipping of Arbitrary Polygons with Degeneracies" by E. L Foster and J. R. Overfelt [1], which claims to extend the classic Greiner-Hormann polygon clipping algorithm by handling of degeneracies. However, I ran into some difficulties with the procedure they describe. Consider the situation depicted on Figure 6(c) and suppose the polygons are oriented in the same way. Start the labeling phase from the I5 (as opposed from I1, as they do): for both subject polygon S and clipping polygon C, I5 has previous and next labels (on, on). Therefore, according to Table

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.. The graph shown in your sample image is actually much easier than the linked example; for that, you don't need to create a clipping path and you don't need to draw the line