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Diffstat (limited to 'src/base/GLMHelper.cpp')
| -rw-r--r-- | src/base/GLMHelper.cpp | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/base/GLMHelper.cpp b/src/base/GLMHelper.cpp new file mode 100644 index 0000000..e4b0f43 --- /dev/null +++ b/src/base/GLMHelper.cpp @@ -0,0 +1,183 @@ +// +// libavg - Media Playback Engine. +// Copyright (C) 2003-2014 Ulrich von Zadow +// +// This library is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 2 of the License, or (at your option) any later version. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License along with this library; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +// +// Current versions can be found at www.libavg.de +// + +#include "GLMHelper.h" +#include "StringHelper.h" +#include "MathHelper.h" + +#include "../glm/gtx/rotate_vector.hpp" + +using namespace std; + +namespace avg { + +glm::vec2 getRotated(const glm::vec2& vec, float angle) +{ + return glm::rotate(vec, angle*180/PI); +} + +glm::vec2 getRotatedPivot(const glm::vec2& vec, float angle, const glm::vec2& pivot) +{ + // translate pivot to origin + glm::vec2 translated = vec - pivot; + + // calculate rotated coordinates about the origin + glm::vec2 rotated = glm::rotate(translated, angle*180/PI); + + // re-translate pivot to original position + rotated += pivot; + + return rotated; +} + +float getAngle(const glm::vec2& vec) +{ + return float(atan2(double(vec.y), double(vec.x))); +} + +glm::vec2 fromPolar(float angle, float radius) +{ + return glm::vec2(cos(angle)*radius, sin(angle)*radius); +} + +template<class NUM> +bool almostEqual(const glm::detail::tvec2<NUM>& v1, const glm::detail::tvec2<NUM>& v2) +{ + return (fabs(v1.x-v2.x)+fabs(v1.y-v2.y)) < 0.0001; +} + +template<class NUM> +bool almostEqual(const glm::detail::tvec4<NUM>& v1, const glm::detail::tvec4<NUM>& v2) +{ + return (fabs(v1.x-v2.x)+fabs(v1.y-v2.y)+fabs(v1.z-v2.z)+fabs(v1.w-v2.w)) < 0.0001; +} + +template<class NUM> +std::ostream& operator<<( std::ostream& os, const glm::detail::tvec2<NUM> &v) +{ + os << "(" << v.x << "," << v.y << ")"; + return os; +} + +template<class NUM> +std::ostream& operator<<( std::ostream& os, const glm::detail::tvec3<NUM> &v) +{ + os << "(" << v.x << "," << v.y << "," << v.z << ")"; + return os; +} + +template<class NUM> +std::ostream& operator<<( std::ostream& os, const glm::detail::tvec4<NUM> &v) +{ + os << "(" << v.x << "," << v.y << "," << v.z << ", " << v.a << ")"; + return os; +} + +template<class NUM> +std::ostream& operator<<( std::ostream& os, const glm::detail::tmat4x4<NUM> &m) +{ + os << "(" << m[0] << ", " << endl << + m[1] << ", " << endl << + m[2] << ", " << endl << + m[3] << ", " << endl << ")"; + return os; +} + +template<class NUM> +std::istream& operator>>(std::istream& is, glm::detail::tvec2<NUM>& p) +{ + skipToken(is, '('); + is >> p.x; + skipToken(is, ','); + is >> p.y; + skipToken(is, ')'); + return is; +} + +template<class NUM> +std::istream& operator>>(std::istream& is, glm::detail::tvec3<NUM>& p) +{ + skipToken(is, '('); + is >> p.x; + skipToken(is, ','); + is >> p.y; + skipToken(is, ','); + is >> p.z; + skipToken(is, ')'); + return is; +} + +glm::vec2 stringToVec2(const std::string& s) +{ + glm::vec2 pt; + fromString(s, pt); + return pt; +} + +glm::vec3 stringToVec3(const std::string& s) +{ + glm::vec3 pt; + fromString(s, pt); + return pt; +} + +glm::ivec3 stringToIVec3(const std::string& s) +{ + glm::ivec3 pt; + fromString(s, pt); + return pt; +} + + +template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec2<int> &p); +template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec2<float> &p); +template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec2<double> &p); + +template AVG_TEMPLATE_API std::istream& operator>>(std::istream& is, glm::detail::tvec2<int>& p); +template AVG_TEMPLATE_API std::istream& operator>>(std::istream& is, glm::detail::tvec2<float>& p); +template AVG_TEMPLATE_API std::istream& operator>>(std::istream& is, glm::detail::tvec2<double>& p); + +template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec3<int> &p); +template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec3<float> &p); +template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec3<double> &p); + +template AVG_TEMPLATE_API std::istream& operator>>(std::istream& is, glm::detail::tvec3<int>& p); +template AVG_TEMPLATE_API std::istream& operator>>(std::istream& is, glm::detail::tvec3<float>& p); +template AVG_TEMPLATE_API std::istream& operator>>(std::istream& is, glm::detail::tvec3<double>& p); + +template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec4<int> &p); +template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec4<float> &p); +template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec4<double> &p); + +template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tmat4x4<float> &p); +template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, + const glm::detail::tmat4x4<double> &p); + +template AVG_TEMPLATE_API bool almostEqual(const glm::detail::tvec2<float>& v1, + const glm::detail::tvec2<float>& v2); +template AVG_TEMPLATE_API bool almostEqual(const glm::detail::tvec2<double>& v1, + const glm::detail::tvec2<double>& v2); +template AVG_TEMPLATE_API bool almostEqual(const glm::detail::tvec4<float>& v1, + const glm::detail::tvec4<float>& v2); +template AVG_TEMPLATE_API bool almostEqual(const glm::detail::tvec4<double>& v1, + const glm::detail::tvec4<double>& v2); +} + |