How can I find the object-space coordinates for a pixel on the screen?
OpenGL FAQ / 9 TransformationsYou'll need to read the depth buffer to obtain the input screen coordinate Z value at the X,Y location of interest. This can be coded as follows: You'll need to provide the screen space X, Y, and Z values as input to gluUnProject() with the ModelView matrix, Projection matrix, and viewport that were current at the time the specific pixel of interest was rendered.
How can I find the screen coordinates for a given object-space coordinate?
OpenGL FAQ / 9 TransformationsYou can use the GLU library gluProject() utility routine if you only need to find it for a few vertices. For a large number of coordinates, it can be more efficient to use the Feedback mechanism. To use gluProject(), you'll need to provide the ModelView matrix, projection matrix, viewport, and input object space coordinates. Screen space coordinates are returned for X, Y, and Z, with Z being normalized (0 <= Z <= 1). See similar questions...
Q4: How do I set object's coordinates?
FlexGraphics - Delphi Graphics Components (CAD, GIS, SCADA, ...A4: Flex-objects' coordinates are stored in the coordinate system of the parent object. The TFlexSchemes schemes list coordinates and the TFlexScheme scheme coordinates always contain (0, 0), and such system is called the document coordinates system. The units in this system depend on the value in the constant PixelScaleFactor of the FlexUtils module (see Q5) and by default 1000 units correspond to 1 pixel on the screen at the scale of 100%. See similar questions...
Why is there so much empty space on the right side of the screen? or Why is the screen cut off?
WVAH Fox 11's Frequently Asked Questions (FAQ)WVAH Fox 11 Online is best viewed at 800x600 pixels. Currently, most pages use 800x600 and a few are still set to the smaller, 640x480 screen resolution. To change your screen display for Windows operating systems, right-click your mouse while holding the cursor over the desktop. From the pop-up menu, select Properties. Choose the Settings tab in the Display Properties window. Under Screen Area, change the setting until it reads 800 by 600 pixels or more. See similar questions...
How can I grab a pixel from an Image object?
Java Programmer's FAQThis is the purpose of the java.awt.image.PixelGrabber class. A fragment of code showing its use is: import java.awt.image.PixelGrabber; import java.awt.Image; .... .... public static int pixelValue(Image image, int x, int y) { // precondition: buffer must not be created from ImageProducer! // x,y should be inside the image, // Returns an integer representing the color value of the x,y pixel. See similar questions...
How I can convert mouse coordinates into modeling space?
INT Products - J/CarnacPro FAQsFirst of all ? be sure that mouse coordinates belong to cgPlotView (i.e. mouse listener was attached to cgPlotView, not to cgPlot & etc.). Then all you need to do is: Right now we don't have support for it, but it's on the list for features that we want to implement later. See similar questions...
How do I plot a single pixel to the screen?
Java Programmer's FAQUse g.drawLine(x1,y1,x1,y1) to draw a line one pixel in length. If you are drawing a very large number of individual pixels, consider using a java.awt.MemoryImageSource object and measure whether this offers better performance. See similar questions...
How do I enter the text for each screen object?
Speech-Over Studio- FAQInstalling Speech-Over Studio is easy: simply double-click the downloaded .exe file. When you purchase the product you enter the registration code during installation, making sure your Internet connection is open. See similar questions...
Can the object move?
In Nomine Frequently Asked Questions - CelestialsAlso depends on the object. Anything designed to bend or move will be able to do so. So a door could open and close, a car could drive around, a ball could roll, a puppet could walk around. But a candlestick couldn't move around on its own, since it is inflexible. Neither could a hammer lift itself to hammer a nail (or whatever). Certain Songs can give movement abilities, however. For example, Numious Corpus: Wings and that toaster vessel . . . See similar questions...
Why is screen keyboard being displayed on different coordinates of the screen at every logon?
Citibank PakistanScreen keyboard is displayed at different coordinates of the screen every time you logon. This is a precaution to prevent the fraudulent attempts of the "keyboard logger" programs that are used to obtain logon details through static coordinates. The screen keyboard can also be dragged to a required location on the logon page using the bar on top. See similar questions...
Is there any way to get the screen coordinates of the cell, in order to align nicely a context menu?
Exontrol Software - ExList FAQ pagePrivate Sub getCellPos(ByVal l As EXLISTLibCtl.List, ByVal nItem As Long, ByVal nColumn As Long, x As Long, y As Long) x = -l.ScrollPos(False) With l Dim c As EXLISTLibCtl.Column For Each c In .Columns If (c.Visible) Then If (c.Position < .Columns(nColumn).Position) Then x = x + c.Width End If End If Next y = 0 If (.HeaderVisible) Then y = y + .HeaderHeight End If With .Items Dim i As Long i = .FirstVisibleItem While Not (i = nItem) And (i >= 0) y = y + .ItemHeight(i) i = . See similar questions...
What happens if an object cuts the screen border?
FAQIf the object is located "inside" the screen (behind the screen glass), it will even enhance the depth perception. But it is bad if an "out screen" object cuts the screen border. In this case the 3D perception will be completely destroyed, because the brain sees an unnatural image. If you want to use out screen effects, place the object in the middle of the screen. See similar questions...
Voodoo3 has pixel disruption near the top of the screen. What gives?
Giddy3 - http://www.retroleum.co.uk/giddy3Voodoo3 cards dont seem to like the default 320x240 "ModeX" display mode too much. If you find the image disruption annoying, please select an alternative video mode - see below. See similar questions...
Can I use use DirectDraw to change the screen resolution or desktop pixel depth?
OpenGL FAQ / 5 Microsoft Windows SpecificsThis probably depends on your graphics device and what, if any, support for this type of operation your device driver provides. You need to keep this basic tenet in mind: Microsoft doesn't require, and consequently does not test for, the ability to render OpenGL into a DirectDraw surface. For this reason, you shouldn't expect this window creation strategy to be available. See similar questions...
What is Pixel ?
FengShuiPixel.com - Feng Shui Pixel Marketing Solution &raqu...It's basically the smallest little dot on your computer screen and it's as tiny as the period at the end of this sentence. Your computer screen may be composed of one of the following resolutions: On the homepage of FengShuiPixel.com, each square on the grid is 10 pixels x 10 pixels for a total of 100 pixels. See similar questions...
How do I interpret the chromosomal coordinates of a gene?
Frequently Asked QuestionsThe start and stop coordinates refer to the entire chromosome, where position 1 is the first nucleotide of the left arm of the chromosome. The Watson strand is defined as running 5' to 3' from the left to right telomere, and the Crick strand is complementary to it. The first letter of each name is 'Y', denoting 'yeast'. The second letter denotes chromosome number (I=A, II=B, etc.). The third letter denotes the chromosomal arm where each locus resides: L for left and R for right. See similar questions...
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