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An ellipse (red), its evolute (blue), and its medial axis (green). The symmetry set, a super-set of the medial axis, is the green and yellow curves. One bi-tangent circle is shown. (a) A simple 3d object. (b) Its medial axis transform. The colors represent the distance from the medial axis to the object's boundary.
Axial – along the center of a round body, or the axis of rotation of a body; Radial – along a direction pointing along a radius from the center of an object, or perpendicular to a curved path. Circumferential (or azimuthal) – following around a curve or circumference of an object.
Many anatomical terms can be combined, either to indicate a position in two axes simultaneously or to indicate the direction of a movement relative to the body. For example, "anterolateral" indicates a position that is both anterior and lateral to the body axis (such as the bulk of the pectoralis major muscle).
For example, blood can be said to flow in a proximal or distal direction, and anteroposterior, mediolateral, and inferosuperior axes are lines along which the body extends, like the X, Y, and Z axes of a Cartesian coordinate system. An axis can be projected to a corresponding plane.
A science fiction video game is a video game that falls under the science fiction genre. The genre has existed since the dawn of video games, with their evolution being shaped heavily by it. [1] Spacewar! (1962), one of the first video games ever made, was science fiction-themed.
4X is a subgenre of strategy video games. The term is a loose acronym of "explore, expand, exploit, and exterminate", coined in 1993 to describe the gameplay of Master of Orion . 4X games usually feature complex simulations of scientific research, economics, diplomacy, and social dynamics.
Once common, isometric projection became less so with the advent of more powerful 3D graphics systems, and as video games began to focus more on action and individual characters. [1] However, video games using isometric projection—especially computer role-playing games—have seen a resurgence in recent years within the indie gaming scene. [1 ...
3D visualization of a sphere and a rotation about an Euler axis (^) by an angle of In 3-dimensional space, according to Euler's rotation theorem, any rotation or sequence of rotations of a rigid body or coordinate system about a fixed point is equivalent to a single rotation by a given angle about a fixed axis (called the Euler axis) that runs through the fixed point. [6]