Technical facts

Operating system(s) or programming environment(s)

Lubuntu 15.04 (vivid)

IDE(s):

Qt Creator 3.1.1

Project type:

Console application

C++ standard:

C++98

Compiler(s):

G++ 4.9.2

Libraries used:

STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./CppGmtlExample1/CppGmtlExample1.pro


include(../../ConsoleApplication.pri) #Or use the code below

# QT += core

# QT += gui

# greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

# CONFIG   += console

# CONFIG   -= app_bundle

# TEMPLATE = app

# CONFIG(release, debug|release) {

#   DEFINES += NDEBUG NTRACE_BILDERBIKKEL

# }

# QMAKE_CXXFLAGS += -std=c++11 -Wall -Wextra -Weffc++

# unix {

#   QMAKE_CXXFLAGS += -Werror

# }



include(../../Libraries/Boost.pri) #Or use the code below

# win32 {

#   INCLUDEPATH += \

#     ../../Libraries/boost_1_54_0

# }



SOURCES += main.cpp



#

#

# gmtl

#

#



unix {

  message(Unix: gmtl: not tested)

}



win32 {

  message(Windows: gmtl: include path)

  INCLUDEPATH+= ../../Libraries/gmtl-0.6.1

}

./CppGmtlExample1/main.cpp


#include <cassert>

#include <iostream>

#include <gmtl/gmtl.h>



int main()

{

  const gmtl::Vec3f a { 1.0, 2.0,  3.0 };

  const gmtl::Vec3f b { 4.0, 8.0, 12.0 };

  gmtl::Vec3f result;



  const float w = 1.0 / 3.0;



  ///Obtain the weighted vector between a and b, closest to a:

  /// a[1] = 2.0

  /// b[1] = 8.0

  /// w    = 1.0 / 3.0                       //weight

  /// d    = b[1] - a[1] = 6.0               //distance between a[1] and b[1]

  /// d_a  = w * d = (1.0 / 3.0) * 6.0 = 2.0 //distance from a[1]

  /// r[1] = a[1] + d_a = 2.0 + 2.0 = 4;     //resulting value

  gmtl::lerp( result, w, a, b );



  const double e = 0.000001;

  assert(result[0] > 2.0 - e && result[0] < 2.0 + e);

  assert(result[1] > 4.0 - e && result[1] < 4.0 + e);

  assert(result[2] > 6.0 - e && result[2] < 6.0 + e);

}

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(C++) GmtlExample1

Technical facts

Qt project file: ./CppGmtlExample1/CppGmtlExample1.pro

./CppGmtlExample1/main.cpp