SphereWorld.cpp

作者分享了自己在学习OpenGL的过程中,面对时间有限、兴趣转移等挑战,并表达了决心要像以前一样深入学习,最终目标是在年末开发出一个像样的渲染器。文中详细介绍了创建渲染器所需的一些关键代码和步骤,包括初始化、设置视口、透视投影、模型视图矩阵操作等。

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  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 ;
}


 

我在ardupilot/library中新添加了两个文件,编译到最后出现报错usr/bin/ld: lib/libArduPlane_libs.a(AP_CANManager.cpp.0.o): in function `AP_CANManager::init()': AP_CANManager.cpp:(.text._ZN13AP_CANManager4initEv+0x556): undefined reference to `AP_ToshibaCAN::AP_ToshibaCAN()' collect2: error: ld returned 1 exit status Waf: Leaving directory `/home/hjhj3/ardupilot/build/sitl' Build failed -> task in 'bin/arduplane' failed (exit status 1): {task 127115774264480: cxxprogram AP_Arming.cpp.53.o,AP_ExternalControl_Plane.cpp.53.o,Attitude.cpp.53.o,GCS_MAVLink_Plane.cpp.53.o,GCS_Plane.cpp.53.o,Log.cpp.53.o,Parameters.cpp.53.o,Plane.cpp.53.o,RC_Channel_Plane.cpp.53.o,VTOL_Assist.cpp.53.o,afs_plane.cpp.53.o,altitude.cpp.53.o,avoidance_adsb.cpp.53.o,commands.cpp.53.o,commands_logic.cpp.53.o,control_modes.cpp.53.o,ekf_check.cpp.53.o,events.cpp.53.o,failsafe.cpp.53.o,fence.cpp.53.o,is_flying.cpp.53.o,mode.cpp.53.o,mode_LoiterAltQLand.cpp.53.o,mode_acro.cpp.53.o,mode_auto.cpp.53.o,mode_autoland.cpp.53.o,mode_autotune.cpp.53.o,mode_avoidADSB.cpp.53.o,mode_circle.cpp.53.o,mode_cruise.cpp.53.o,mode_fbwa.cpp.53.o,mode_fbwb.cpp.53.o,mode_guided.cpp.53.o,mode_loiter.cpp.53.o,mode_manual.cpp.53.o,mode_qacro.cpp.53.o,mode_qautotune.cpp.53.o,mode_qhover.cpp.53.o,mode_qland.cpp.53.o,mode_qloiter.cpp.53.o,mode_qrtl.cpp.53.o,mode_qstabilize.cpp.53.o,mode_rtl.cpp.53.o,mode_stabilize.cpp.53.o,mode_takeoff.cpp.53.o,mode_thermal.cpp.53.o,mode_training.cpp.53.o,motor_test.cpp.53.o,navigation.cpp.53.o,parachute.cpp.53.o,pullup.cpp.53.o,qautotune.cpp.53.o,quadplane.cpp.53.o,radio.cpp.53.o,reverse_thrust.cpp.53.o,sensors.cpp.53.o,servos.cpp.53.o,soaring.cpp.53.o,system.cpp.53.o,tailsitter.cpp.53.o,takeoff.cpp.53.o,tiltrotor.cpp.53.o,tuning.cpp.53.o -> arduplane} (run with -v to display more information)
最新发布
03-15
评论 4
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