About View Projection Modes

# About View Projection Modes

View projection produces realistic visual effects of a model.

The ViewCube tool supports two view projection modes (Perspective and Orthographic)
and a combination of both these modes (Perspective with Ortho faces). Orthographic
projection is also referred to as parallel projection. Perspective projected views
are calculated based on the distance from a theoretical camera and target point. The
shorter the distance between the camera and the target point, the more distorted the
perspective effect appears; greater distances produce less distorted affects on the
model. Orthographic projected views display all the points of a model being projected
parallel to the screen.

Orthographic projection mode makes it easier to work with a model due to all the edges
of the model appearing as the same size, regardless of the distance from the camera.
Orthographic projection mode though, is not how you commonly see objects in the real
world. Objects in the real world are seen in perspective projection. So when you want
to generate a rendering or hidden line view of a model, using perspective projection
will give the model a more realistic look.

The following illustration shows the same model viewed from the same viewing direction,
but with different view projections.

 Parallel Perspective

When you change the view for a model, the view is updated using the previous projection
mode unless the current projection mode for the ViewCube tool is Perspective with
Ortho Faces. The Perspective with Ortho Faces mode forces all views to be displayed
in perspective projection unless the model is being viewed from one of the face views:
top, bottom, front, back, left, or right.

sp>About View Projection Modes. View projection produces realistic visual effects of a model. The ViewCube tool supports two view projection modes (Perspective and Orthographic) and a combination of both these modes (Perspective with Ortho faces). Orthographic projection is also referred to as parallel projection.projection (sometimes orthogonal projection), is a means of representing … a map projection, see Orthographic projection in cartography. For mathematical discussion in terms of linear algebra, see Projection (linear algebra ).models live in …… The 3D Layout Mode supports 2 types of projection, Perspective and … To switch the board to 3D, press the 3 shortcut or select View » 3D …View matrix; The Projection matrix; Cumulating ….. we'll learn how to give our 3D models some colour (tutorial 4) and textures (tutorial 5).… Until now we've used the default OpenGL view for drawing our geometries and textures. While it is possible to draw any 2D geometry we can …projection mode see the "view" subnode. Note you might have several views and even some with hidden geoemtries …views of the texture on the base sphere. Note : … The projection modes are referring to what's being done with the texture covering the base sphere.mode lines of identical real-world lengths will … To clarify, if you were to stare at a clock in orthographic view you would see …projections in OpenGL using C++, including coverage of … ways you can setup the view frustum, and thus the perspective projection. …. case WM_SYSCOMMAND: // look for screensavers and powersave mode { switch …

﻿﻿