I want to be able to generate a highly graphical (with lots of text content as well) PDF file from data that I might have in a database or xml or any other structured form. Currently our graphic designer creates these PDF files in Photoshop manually after getting the content as a MS Word Document. But usually, there are more than 20 rev...
Having downloaded Pango and GLib from the GTK+ Project's Win32 downloads page and having created and configured a Win32 project under Visual Studio 2005 so it points to the proper lib and include directories, how do you initialize Pango for rendering to a Win32 window? Should the first call be to pango_win32_get_context()? Calling that ...
First of all, I'm fairly sure snapping to grid is fairly easy, however I've run into some odd trouble in this situation and my maths are too weak to work out specifically what is wrong. Here's the situation I have an abstract concept of a grid, with Y steps exactly Y_STEP apart (the x steps are working fine so ignore them for now) The...
Hi, I´m programming a .NET Compact Framework application which shows maps on a PDA. I´ve created an ad hoc component that paints it´s own piece of the whole map, using several of this components the big picture is composed. I did it this way to avoid the latency of painting the whole map in a single step. What I would like to do know i...
I am working on a geometry problem that requires finding the intersection of two parabolic arcs in any rotation. I was able to intesect a line and a parabolic arc by rotating the plane to align the arc with an axis, but two parabolas cannot both align with an axis. I am working on deriving the formulas, but I would like to know if ther...
I have a line that I draw in a window and I let the user drag it around. So, my line is defined by two points: (x1,y1) and (x2,y2). But now I would like to draw "caps" at the end of my line, that is, short perpendicular lines at each of my end points. The caps should be N pixels in length. Thus, to draw my "cap" line at end point (x1,y1...
If i open an image with open("image.jpg"), how can i get the rgb values of a pixel, if i have the 'coordinates' ( or co-ordinates?) of the pixel? Then how can i do the reverse of this? Starting with a blank graphic, 'write' a pixel with a certain rgb value? It would be so much better if i didn't have to download any additional librarie...
I'd like my application to have a full-screen mode. What is the easiest way to do this, do I need a third party library for this or is there something in the JDK that already offers this? ...
To sketch the background of this question : at work we use Dell Precision workstations. My current one has got an NVidia Quadro FX1700. My team is developing the graphics components for a real time data acquisition system. So we are always looking out to see if the graphics operations don't use up too much CPU time. For quick checks, we ...
I have a graphical app that needs to test the resolution of the display it is starting up on in Mac OS X to ensure it is not larger than the resolution. This is done before the window itself is initialized. If there is more than one display, it needs to be the primary display. This is the display that hardware accelerated (OpenGL) a...
My custom homebrew photography processing software, running on 64 bit Linux/GNU, writes out PNG and TIFF files. These are to be sent to a quality printing shop to be made into fine art. Working with interior designers - it's important to get the colors just right! The print shops usually have no trouble with TIFF and PNGs made fr...
I'm in the process of writing a Java 2D game. I'm using the built-in Java 2D drawing libraries, drawing on a Graphics2D I acquire from a BufferStrategy from a Canvas in a JFrame (which is sometimes full-screened). The BufferStrategy is double-buffered. Repainting is done actively, via a timer. I'm having some performance issues though, e...
I'm using .NET to make an application with a drawing surface, similar to Visio. The UI connects two objects on the screen with Graphics.DrawLine. This simple implementation works fine, but as the surface gets more complex, I need a more robust way to represent the objects. One of these robust requirements is determining the intersection ...
I have a number of RGBA pixels, each of them has an alpha component. So I have a list of pixels: (p0 p1 p2 p3 p4 ... pn) where p_0_ is the front pixel and p_n_ is the farthest (at the back). The last (or any) pixel is not necessary opaque, so the resulting blended pixel can be somehow transparent also. I'm blending from the beginning o...
I guess I'll illustrate with an example: In this game you are able to draw 2D shapes using the mouse and what you draw is rendered to the screen in real-time. I want to know what the best ways are to render this type of drawing using hardware acceleration (OpenGL). I had two ideas: Create a screen-size texture when drawing is started, ...
I work on a (raytracer) graphics engine and during the development process I want to create a bunch of pictures describing algorithms in space. First I thought about 3D packages (like 3DSMax and others), then about 2D (like Illustrator and others). But it all seems to be an overkill... (I'd like to use Rhino 4.0 Evaluation, but it is an...
I am looking for a toolkit that will allow me to design widgets containing 2D graphics for an elevator simulation in Java. Once created, those widgets will be integrated with SWT, Swing, or QtJambi framework. Background information: I am developing an Elevator Simulator for fun. My main goal is to increase my knowledge of Java, Eclips...
Thinking in regards to Sliverlight, I would like to know where would be good places to go to get a refresher on 3d space, transforms, matrix manipulation, and all that good stuff. ...
Given two image buffers (assume it's an array of ints of size width * height, with each element a color value), how can I map an area defined by a quadrilateral from one image buffer into the other (always square) image buffer? I'm led to understand this is called "projective transformation". I'm also looking for a general (not language...
Hi! I am thinking about making a website with some fairly intense JavaScript/canvas usage and I have been looking at Processing.js and it seems to me that it would make manipulating the canvas significantly easier. Does anyone know any reasons why I shouldn't use Processing.js? I understand that older browsers won't be able to use it,...