SphereWorld.cpp

  话说最近堕落了,明知道要好好学OPENGL,却每天看书也就一个小时.下班后先打篮球,之后吃饭,回到住处一般都要21点了.确实时间也不是很多.我想说,还要陪女朋友...

  还是要像以前学东西时一样,不管看起来多么简单的东西,都要写代码写一遍,会了再说.所以,现在有电脑了.就更要努力了,要在年末写出一个像样的渲染器呢,要加油了`

  白天的工作做得还好,有时一天也没做什么,有时一天做了很多.做到现在这个阶段,很多东西更要做细了,毕竟是在做产品,要想的东西还是很多,高瞻远瞩的眼光是要有的,不然将来遭罪的是我们,而且也对不起信任我的人.

  贴吧,之后睡觉了.

//	SphereWorld.cpp

#include "stdafx.h"
#include <GLShaderManager.h>
#include <GLFrustum.h>
#include <GLBatch.h>
#include <GLMatrixStack.h>
#include <GLGeometryTransform.h>
#include <StopWatch.h>
#include <math.h>
#include <GL/glut.h>

GLShaderManager shaderManager ;
GLMatrixStack modelViewMatrix ;
GLMatrixStack projectionMatrix ;
GLFrustum viewFrustum ;
GLGeometryTransform transformPipeline ;
GLTriangleBatch torusBatch ;
GLBatch floorBatch ;

void SetupRC()
{
	shaderManager.InitializeStockShaders() ;

	glEnable(GL_DEPTH_TEST) ;
	glPolygonMode(GL_FRONT_AND_BACK, GL_RGB) ;

	glClearColor(0, 0, 0, 1) ;

	gltMakeTorus(torusBatch, 0.4, 0.15, 30, 30) ;

	floorBatch.Begin(GL_LINES, 324) ;
	{
		for(GLfloat x = -20.0; x <= 20.0f; x+= 0.5)
		{
			floorBatch.Vertex3f(x, -0.55f, 20.0f);
			floorBatch.Vertex3f(x, -0.55f, -20.0f);
        
			floorBatch.Vertex3f(20.0f, -0.55f, x);
			floorBatch.Vertex3f(-20.0f, -0.55f, x);
		}
	}
    floorBatch.End();    
}

void ChangeSize(int width, int height)
{
	glViewport(0, 0, width, height) ;

	viewFrustum.SetPerspective(35, (float)width / height, 1, 100) ;
	projectionMatrix.LoadMatrix(viewFrustum.GetProjectionMatrix()) ;

	transformPipeline.SetMatrixStacks(modelViewMatrix, projectionMatrix) ;
}

void RenderScene(void)
{
	static GLfloat floorColor[] = {0, 1, 0, 1} ;
	static GLfloat torusColor[] = {1, 0, 0, 1} ;
	
	static CStopWatch rotTimer ;
	float yRot = rotTimer.GetElapsedSeconds() * 60 ;

	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) ;

	modelViewMatrix.PushMatrix() ;

	shaderManager.UseStockShader(GLT_SHADER_FLAT,
		transformPipeline.GetModelViewProjectionMatrix(),
		floorColor) ;

	floorBatch.Draw() ;

	modelViewMatrix.Translate(0, 0, -2.5) ;
	modelViewMatrix.Rotate(yRot, 0, 1, 0) ;
	shaderManager.UseStockShader(GLT_SHADER_FLAT,
		transformPipeline.GetModelViewProjectionMatrix(),
		torusColor) ;

	torusBatch.Draw() ;

	modelViewMatrix.PopMatrix() ;

	glutSwapBuffers() ;

	glutPostRedisplay() ;
}

int main (int argc, char* argv[])
{
	gltSetWorkingDirectory(argv[0]) ;

	glutInit(&argc, argv) ;
	glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH) ;
	glutInitWindowSize(800, 600) ;

	glutCreateWindow("Sphere World") ;

	glutReshapeFunc(ChangeSize) ;
	glutDisplayFunc(RenderScene) ;

	GLenum err = glewInit() ;

	SetupRC() ;
	glutMainLoop() ;

	return 0 ;
}