ORTHOGRAPHIC PROJECTION AN INTRODUCTION Orthographic Projections Orthographic Projections are a collection of 2-D drawings that work together to give an accurate overall representation of an object. By definition for each element of a orthographic projection drawing you only present 2 of the three dimensi...
Projection Method The outline on the plane of projection shows how the object appears to the observer. In orthographic projection, rays (or projectors) from all points on the edges or contours of the object extend parallel to each other and perpendicular to the plane of projection. The word or...
Projection matrices are specialized 4x4 matrices designed to transform a 3D point in camera space into its projected counterpart on the canvas. Essentially, when you multiply a 3D point by a projection matrix, you determine its 2D coordinates on the canvas within NDC (Normalized Devic...
Projection of an Object The Glass Box Imagine that the object you are going to draw is positioned inside a glass box, so that the large flat surfaces of the object are parallel to the walls of the box. From each point on the object, imagine a ray, or projector perpendicular to the wal...
Oblique Planes Oblique Planes will not appear as an edge view in any of the six views since they are not parallel or perpendicular to the projection planes. They always appear as a “plane” and have the same number of corners in each of the six views. ...
The Glass Box Unfolded Lines extend around the glass box from one view to another on the planes of projection. These are the projectors from a point in one view to the same point in another view. The Orthographic Projection The front, top, and right-side views of the object shown now wi...