b. Parallel sunbeams converge to the sun
A line of sight appears as a point on the image plane. If we look straight down any line or visual ray, we only see a point in the image. Thus, the direction of view only appears as the principal point, and the origin of any visual ray appears as a point.
2. ඕනෑම කෙලින් රේඛාවක් රූප තලයේ කෙලින් රේඛාවකි. එය කොයි දෙසින් බැලුවද ඇදුනු නූලක් ලෙසින් කෙලින්ය.
Any straight line that is not a line of sight projects a straight line on the image plane. A stretched piece of string always looks straight in a perspective drawing, no matter which way the string is viewed.
3. කෙලින් ඉරක ඕනෑම ලක්ෂ්යයන් දෙකක් රූප තලයේ ප්රක්ෂේපනය කලවිට එම රේඛාව පෙන්වයි.
Any two points on a straight line, projected onto the image plane, define that line on the image plane.
4.කෙලින් රේඛාවක රූපයක් රූප තලයේ හා එහි අතුරුදහන් ලක්ෂ්යයේදී අවසාන වේ. එය රුප තලයට සමාන්තර රේඛා සඳහා පමණක් වලංගු නොවේ.
The image of a straight line ends in two points: its intersection with the image plane and its vanishing point.
5. රේඛාවක අතුරුදහන් ලක්ෂ්යය සමාන්තර දැකුම් රේඛාවයි. අපගේ දැකුම් දිශාවට සමාන්තර රේඛාවලදී අප එම රේඛාවේ අතුරුදහන් ලක්ෂ්යය දෙස බලමු.
The vanishing point for any line is the parallel line of sight. If our direction of view is exactly parallel to any line, then we are looking directly at the vanishing point for that line.
දැකුම් දිශාවට සමාන්තර රේඛා ප්රධාන ලක්ෂයේදී හමුවේ.
7. Lines parallel to the direction of view appear to converge at the principal point.
A plane that contains a line of sight appears as a line on the image plane.
Any two lines in a plane, projected onto the image plane, define the plane on the image plane.
The image of a plane ends in two lines: its intersection with the image plane and its vanishing line.
The vanishing line for any plane is the parallel plane containing a line of sight, or a line connecting the vanishing points for any two lines parallel to the plane.
All parallel planes converge to the same vanishing line.
The vanishing line of a plane contains the vanishing points for all lines in the plane and all lines parallel to the plane.