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Add GLM library to deal with matrices

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This commit is contained in:
Meoweg 2015-11-04 04:48:27 +00:00
parent 3c4d7ac6a9
commit 38262dee11
3 changed files with 73 additions and 4 deletions
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3
CMakeLists.txt
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@ -8,3 +8,6 @@ file (GLOB sources *.cpp)
add_executable (matabstrix ${sources})
set (CMAKE_EXECUTABLE_SUFFIX ".html")
find_package (GLM REQUIRED)
include_directories (${GLM_INCLUDE_DIRS})

63
cmake/Modules/FindGLM.cmake Normal file
View file

@ -0,0 +1,63 @@
# FindGLM - attempts to locate the glm matrix/vector library.
#
# This module defines the following variables (on success):
# GLM_INCLUDE_DIRS - where to find glm/glm.hpp
# GLM_FOUND - if the library was successfully located
#
# It is trying a few standard installation locations, but can be customized
# with the following variables:
# GLM_ROOT_DIR - root directory of a glm installation
# Headers are expected to be found in either:
# <GLM_ROOT_DIR>/glm/glm.hpp OR
# <GLM_ROOT_DIR>/include/glm/glm.hpp
# This variable can either be a cmake or environment
# variable. Note however that changing the value
# of the environment varible will NOT result in
# re-running the header search and therefore NOT
# adjust the variables set by this module.
#=============================================================================
# Copyright 2012 Carsten Neumann
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# default search dirs
SET(_glm_HEADER_SEARCH_DIRS
"/usr/include"
"/usr/local/include")
# check environment variable
SET(_glm_ENV_ROOT_DIR "$ENV{GLM_ROOT_DIR}")
IF(NOT GLM_ROOT_DIR AND _glm_ENV_ROOT_DIR)
SET(GLM_ROOT_DIR "${_glm_ENV_ROOT_DIR}")
ENDIF(NOT GLM_ROOT_DIR AND _glm_ENV_ROOT_DIR)
# put user specified location at beginning of search
IF(GLM_ROOT_DIR)
SET(_glm_HEADER_SEARCH_DIRS "${GLM_ROOT_DIR}"
"${GLM_ROOT_DIR}/include"
${_glm_HEADER_SEARCH_DIRS})
ENDIF(GLM_ROOT_DIR)
# locate header
FIND_PATH(GLM_INCLUDE_DIR "glm/glm.hpp"
PATHS ${_glm_HEADER_SEARCH_DIRS})
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(GLM DEFAULT_MSG
GLM_INCLUDE_DIR)
IF(GLM_FOUND)
SET(GLM_INCLUDE_DIRS "${GLM_INCLUDE_DIR}")
MESSAGE(STATUS "GLM_INCLUDE_DIR = ${GLM_INCLUDE_DIR}")
ENDIF(GLM_FOUND)

11
main.cpp
View file

@ -1,5 +1,8 @@
#include <cstdlib>
#include <glm/glm.hpp>
#include <glm/gtc/type_ptr.hpp>
#include <GL/glew.h>
#include <GL/glfw.h>
@ -16,12 +19,12 @@ static void iterate();
static GLuint view_matrix;
static GLfloat view[] = {
static glm::mat4 view(
1.0, 0.0, 0.0, 0.0,
0.0, 1.0, 0.0, 0.0,
0.0, 0.0, 1.0, 0.0,
0.0 ,0.0, 0.0, 1.0,
};
0.0, 0.0, 0.0, 1.0
);
static const char vertex_shader_source[] = \
"attribute vec4 position; \n"\
@ -100,7 +103,7 @@ void iterate()
{
glClear(GL_COLOR_BUFFER_BIT);
glUniformMatrix4fv(view_matrix, 1, GL_FALSE, view);
glUniformMatrix4fv(view_matrix, 1, GL_FALSE, glm::value_ptr(view));
glDrawArrays(GL_TRIANGLES, 0, 3);