The GNU 3DLDF Cones Page

Author: Laurence D. Finston

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Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 The Free Software Foundation, Inc.

Permission is granted to copy, distribute, and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of this license is included in the file COPYING.TXT

Last updated: November 9, 2006

Table of Contents

Introduction

Shadows

The shadow of a double-napped cone from a point source of light at an infinite distance.

Focus:
position = (-3, 15, -30)
direction = (-3, 15, 100)
distance = 15

Point source of light:
angle = 32°
elevation = 25°

The 3DLDF code for generating this image is in cones01.ldf.