Theory Why it is hard Popular font formats like TrueType and OpenType are vector outline formats: they use Bezier curves to define the boundary of the letter. Image source. Transforming those formats into arrays of pixels (rasterization) is too specific and out of OpenGL’s scope, specially because OpenGl does not have non-straight primitives (e.g. see … Read more
If you are looking for a C++ library, then Qt basically does what you are looking for. If you want to stick to pure C, then Qt is not an option. As a C framework you could use GTK+, it works on Linux, Windows and OS X.
I’ve written some quick-and-dirty code that estimates this for Bézier curves of any degree. (Note: this is pseudo-brute force, not a closed-form solution.) Demo: http://phrogz.net/svg/closest-point-on-bezier.html /** Find the ~closest point on a Bézier curve to a point you supply. * out : A vector to modify to be the point on the curve * curve … Read more
Yes, having art assets in version control is very useful. You get the ability to track history, roll back changes, and you have a single source to do backups with. Keep in mind that art assets are MUCH larger so your server needs to have lots of disk space & network bandwidth. I’ve had success … Read more
Good question. The answer is it depends!! On a more useful note, I can say this: A few years ago I developed a CAD-style 3D rendering application in OpenGL. This had to display CAD models of oil rigs with up to 1,000,000 objects and allow the user to zoom right into detail, or zoom out, … Read more
The lowest level would be the graphics card’s video RAM. When the computer first starts, the graphics card is typically set to the 80×25 character legacy mode. You can write text with a BIOS provided interrupt at this point. You can also change the foreground and background color from a palette of 16 distinctive colors. … Read more
This means your installation of php doesn’t have the gd library installed/enabled. http://www.php.net/manual/en/image.installation.php
Having read the Wikipedia page on Bresenham’s (also ‘Midpoint’) circle algorithm, it would appear that the easiest thing to do would be to modify its actions, such that instead of setPixel(x0 + x, y0 + y); setPixel(x0 – x, y0 + y); and similar, each time you instead do lineFrom(x0 – x, y0 + y, … Read more
You might want to check out QuickGraph. NodeXL might also be of interest (visualization library). It’s WPF, but you can use a container to host it if you need WinForms.