void CRenWin3D::DrawAxis()
{
glDisable(GL_LIGHTING);
glClear(GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(-2.0f, 2.0f, -1.5f, 1.5f, 0.1f, 100.0f);
glm::mat4 rotMx = glm::lookAt(glm::vec3(0.0f, 0.0f, 0.0f), m_front, m_up);
glm::vec4 vecX(0.1f, 0.0f, 0.0f, 1.0f);
glm::vec4 vecY(0.0f, 0.1f, 0.0f, 1.0f);
glm::vec4 vecZ(0.0f, 0.0f, 0.1f, 1.0f);
vecX = rotMx * vecX;
vecY = rotMx * vecY;
vecZ = rotMx * vecZ;
glTranslatef(-1.9f, -1.4f, -20.0f);
glColor3f(1.0f, 0.0f, 0.0f);
glBegin(GL_LINES);
glVertex3f(0.0f, 0.0f, 0.0f);
glVertex3f(vecX.x, vecX.y, vecX.z);
glEnd();
glColor3f(0.0f, 1.0f, 0.0f);
glBegin(GL_LINES);
glVertex3f(0.0f, 0.0f, 0.0f);
glVertex3f(vecY.x, vecY.y, vecY.z);
glEnd();
glColor3f(0.0f, 0.0f, 1.0f);
glBegin(GL_LINES);
glVertex3f(0.0f, 0.0f, 0.0f);
glVertex3f(vecZ.x, vecZ.y, vecZ.z);
glEnd();
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
if(m_lighting)
{
glEnable(GL_LIGHTING);
}
glColor3f(1.0f, 1.0f, 1.0f);
}
//-------------------------------------------------------------------------------------------
//
// 功能： 第二条直线的起点移动到第一条直线的中点位置，
// 并通过构造旋转矩阵使得第二条直线和第一条直线垂直
//
// 作者：Qin H.X.
//
// 日期：200709
//
// 历史：无
//
//----------------------------------------------------------------------------------------------
// - CGDCH06.TransformLine command (do not rename)
static void CGDCH06TransformLine(void)
{
ads_name ename1,ename2;
ads_point pickpt;
if (acedEntSel(_T("\n选择直线1: "), ename1, pickpt) != RTNORM)
{
acutPrintf(_T("\n选择直线1失败"));
return ;
}
if (acedEntSel(_T("\n选择直线2: "), ename2, pickpt) != RTNORM)
{
acutPrintf(_T("\n选择直线2失败"));
return ;
}
AcDbObjectId IdLine1,IdLine2;
acdbGetObjectId(IdLine1, ename1);
acdbGetObjectId(IdLine2, ename2);
//直线对象
AcDbLine *pLine1 = NULL;
AcDbLine *pLine2 = NULL;
//以读方式打开实体
if(Acad::eOk == acdbOpenObject(pLine1, IdLine1, AcDb::kForRead))
{
if(Acad::eOk == acdbOpenObject(pLine2, IdLine2, AcDb::kForRead))
{
// 计算第一条直线的中点
AcGePoint3d ptMid;
ptMid.x = 0.5*(pLine1->endPoint ().x + pLine1->startPoint ().x);
ptMid.y= 0.5*(pLine1->endPoint ().y + pLine1->startPoint ().y);
ptMid.z = 0.5*(pLine1->endPoint ().z + pLine1->startPoint ().z);
// 第二条直线起点到第一条直线的向量
AcGeVector3d vecMove = ptMid - pLine2->startPoint ();
// 构造平移矩阵
AcGeMatrix3d mat,mat1;
mat = mat.translation (vecMove);
// 修改第二条直线
pLine2->upgradeOpen ();
pLine2->transformBy (mat);
//计算两条直线的夹角
AcGeVector3d vec1 = pLine1->endPoint ()- pLine1->startPoint ();
AcGeVector3d vec2 = pLine2->endPoint ()- pLine2->startPoint ();
double dAng;
dAng = vec1.angleTo(vec2);
AcGeVector3d vecZ(0.0,0.0,1.0);
//计算旋转角度
double dRot;
if(dAng<0.5*PI)
{
dRot = 0.5*PI - dAng;
}
else
{
dRot =dAng - 0.5*PI ;
}
// 构造旋转矩阵
mat1 = mat1.rotation (dRot,vecZ,pLine2->startPoint ());
//对直线进行旋转变换
pLine2->transformBy (mat1);
pLine2->setColorIndex (1);
//关闭实体
pLine2->close();
acutPrintf(_T("\n 操作完成 。"));
}
//关闭实体
pLine1->close();
}
// Add your code for command CGDCH06.TransformLine here
}