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  2. Line drawing algorithm - Wikipedia

    en.wikipedia.org/wiki/Line_drawing_algorithm

    The simplest method of drawing a line involves directly calculating pixel positions from a line equation. Given a starting point (,) and an end point (,), points on the line fulfill the equation = +, with = = being the slope of the line. The line can then be drawn by evaluating this equation via a simple loop, as shown in the following pseudocode:

  3. Aliasing - Wikipedia

    en.wikipedia.org/wiki/Aliasing

    Aliasing in spatially sampled signals (e.g., moiré patterns in digital images) is referred to as spatial aliasing. Aliasing is generally avoided by applying low-pass filters or anti-aliasing filters (AAF) to the input signal before sampling and when converting a signal from a higher to a lower sampling rate.

  4. Clipping (computer graphics) - Wikipedia

    en.wikipedia.org/wiki/Clipping_(computer_graphics)

    Clipping, in the context of computer graphics, is a method to selectively enable or disable rendering operations within a defined region of interest. Mathematically, clipping can be described using the terminology of constructive geometry .

  5. Line clipping - Wikipedia

    en.wikipedia.org/wiki/Line_clipping

    The Nicholl–Lee–Nicholl algorithm is a fast line-clipping algorithm that reduces the chances of clipping a single line segment multiple times, as may happen in the Cohen–Sutherland algorithm. The clipping window is divided into a number of different areas, depending on the position of the initial point of the line to be clipped.

  6. Xiaolin Wu's line algorithm - Wikipedia

    en.wikipedia.org/wiki/Xiaolin_Wu's_line_algorithm

    A naive approach to anti-aliasing the line would take an extremely long time. Wu's algorithm is comparatively fast, but is still slower than Bresenham's algorithm. The algorithm consists of drawing pairs of pixels straddling the line, each coloured according to its distance from the line. Pixels at the line ends are handled separately.

  7. List of computer graphics and descriptive geometry topics

    en.wikipedia.org/wiki/List_of_computer_graphics...

    Bresenham's line algorithm; Bump mapping; Calligraphic projection; Cel shading; Channel (digital image) Checkerboard rendering; Circular thresholding; Clip coordinates; Clipmap; Clipping (computer graphics) Clipping path; Collision detection; Color depth; Color gradient; Color space; Colour banding; Color bleeding (computer graphics) Color ...

  8. Nicholl–Lee–Nicholl algorithm - Wikipedia

    en.wikipedia.org/wiki/Nicholl–Lee–Nicholl...

    The line segment may then be re-translated and/or re-rotated to bring it to the original position. After that, straight line segments are drawn from the line end point, passing through the corners of the clipping window. These areas are then designated as L, LT, LB, or TR, depending on the location of the initial point. Then the other end point ...

  9. Cyrus–Beck algorithm - Wikipedia

    en.wikipedia.org/wiki/Cyrus–Beck_algorithm

    Here the parametric equation of a line in the view plane is = + where . Now to find the intersection point with the clipping window, we calculate the value of the dot product . Let ⁠ p E {\displaystyle \mathbf {p} _{E}} ⁠ be a point on the clipping plane ⁠ E {\displaystyle E} ⁠ .