From 74c6854fd8dcbaee736ac0421805ff1e03c4a1e2 Mon Sep 17 00:00:00 2001 From: iamn1ck Date: Sun, 19 Feb 2017 07:00:34 -0600 Subject: -quadtree and opengl rendering are now in the master branch ! -using sdl_rect for location and size ended up being not so great due to it not having floats, so we reverted back to using location -much, much refractoring is now needed --- inc/glm/gtx/gradient_paint.inl | 66 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 inc/glm/gtx/gradient_paint.inl (limited to 'inc/glm/gtx/gradient_paint.inl') diff --git a/inc/glm/gtx/gradient_paint.inl b/inc/glm/gtx/gradient_paint.inl new file mode 100644 index 0000000..6c79029 --- /dev/null +++ b/inc/glm/gtx/gradient_paint.inl @@ -0,0 +1,66 @@ +/////////////////////////////////////////////////////////////////////////////////// +/// OpenGL Mathematics (glm.g-truc.net) +/// +/// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net) +/// Permission is hereby granted, free of charge, to any person obtaining a copy +/// of this software and associated documentation files (the "Software"), to deal +/// in the Software without restriction, including without limitation the rights +/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +/// copies of the Software, and to permit persons to whom the Software is +/// furnished to do so, subject to the following conditions: +/// +/// The above copyright notice and this permission notice shall be included in +/// all copies or substantial portions of the Software. +/// +/// Restrictions: +/// By making use of the Software for military purposes, you choose to make +/// a Bunny unhappy. +/// +/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +/// THE SOFTWARE. +/// +/// @ref gtx_gradient_paint +/// @file glm/gtx/gradient_paint.inl +/// @date 2009-03-06 / 2013-04-09 +/// @author Christophe Riccio +/////////////////////////////////////////////////////////////////////////////////////////////////// + +namespace glm +{ + template + GLM_FUNC_QUALIFIER T radialGradient + ( + tvec2 const & Center, + T const & Radius, + tvec2 const & Focal, + tvec2 const & Position + ) + { + tvec2 F = Focal - Center; + tvec2 D = Position - Focal; + T Radius2 = pow2(Radius); + T Fx2 = pow2(F.x); + T Fy2 = pow2(F.y); + + T Numerator = (D.x * F.x + D.y * F.y) + sqrt(Radius2 * (pow2(D.x) + pow2(D.y)) - pow2(D.x * F.y - D.y * F.x)); + T Denominator = Radius2 - (Fx2 + Fy2); + return Numerator / Denominator; + } + + template + GLM_FUNC_QUALIFIER T linearGradient + ( + tvec2 const & Point0, + tvec2 const & Point1, + tvec2 const & Position + ) + { + tvec2 Dist = Point1 - Point0; + return (Dist.x * (Position.x - Point0.x) + Dist.y * (Position.y - Point0.y)) / glm::dot(Dist, Dist); + } +}//namespace glm -- cgit v1.2.3