public DrawMap(CoordPoint p0, CoordPoint p_x, CoordPoint p_y, CoordPoint p_z, CoordPoint p_camera)
{
origin_coordinates = p0;
x_coordinates = p_x;
y_coordinates = p_y;
z_coordinates = p_z;
camera_location = p_camera;
}
public void SetCameraPosition(OpenGL gl, CoordPoint p_camera)
{
camera_location = p_camera;
gl.MatrixMode(OpenGL.GL_MODELVIEW);
gl.LoadIdentity();
gl.LookAt(camera_location.x, camera_location.y, camera_location.z, 0, 0, 0, 0, 1, 0);
GLDrawCubeCoordinates(gl);
}
private void glMap_MouseDown(object sender, MouseEventArgs e)
{
CoordPoint p = new CoordPoint(0, 50, 600);
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
draw_t.SetCameraPosition(openGLControl1.OpenGL, p);
}
}
public void GLDrawGrid(OpenGL gl, CoordPoint pt1, CoordPoint pt2, int num)
{
double _xLen = (pt2.x - pt1.x) / num;
double _yLen = (pt2.y - pt1.y) / num;
double _zLen = (pt2.z - pt1.z) / num;
gl.LineWidth(1.0f);
gl.LineStipple(1, 0x0303);//线条样式
gl.Begin(OpenGL.GL_LINES);
gl.Enable(OpenGL.GL_LINE_SMOOTH);
//glColor3f(0.0f,0.0f, 1.0f); //白色线条
int xi = 0;
int yi = 0;
int zi = 0;
//绘制平行于X的直线
for (zi = 0; zi <= num; zi++)
{
double z = _zLen * zi + pt1.z;
for (yi = 0; yi <= num; yi++)
{
double y = _yLen * yi + pt1.y;
gl.Vertex(pt1.x, y, z);
gl.Vertex(pt2.x, y, z);
}
}
//绘制平行于Y的直线
for (zi = 0; zi <= num; zi++)
{
double z = _zLen * zi + pt1.z;
for (xi = 0; xi <= num; xi++)
{
double x = _xLen * xi + pt1.x;
gl.Vertex(x, pt1.y, z);
gl.Vertex(x, pt2.y, z);
}
}
//绘制平行于Z的直线
for (yi = 0; yi <= num; yi++)
{
double y = _yLen * yi + pt1.y;
for (xi = 0; xi <= num; xi++)
{
double x = _xLen * xi + pt1.x;
gl.Vertex(x, y, pt1.z);
gl.Vertex(x, y, pt2.z);
}
}
gl.End();
}
public void GLDrawCubeCoordinates(OpenGL gl)
{
/*****网格绘制*****/
/*****使用颜色混合来消除一些锯齿， 主要针对点和线
* 以及不相互重叠的多边形的反锯齿。*****/
gl.BlendFunc(OpenGL.GL_SRC_ALPHA, OpenGL.GL_ONE_MINUS_SRC_ALPHA);
gl.Enable(OpenGL.GL_BLEND);
gl.Enable(OpenGL.GL_POINT_SMOOTH); //设置反走样
gl.Hint(OpenGL.GL_POINT_SMOOTH_HINT, OpenGL.GL_NICEST); //设置反走样
gl.Enable(OpenGL.GL_LINE_SMOOTH);
gl.Hint(OpenGL.GL_LINE_SMOOTH_HINT, OpenGL.GL_NICEST);
gl.Enable(OpenGL.GL_POLYGON_SMOOTH);
gl.Hint(OpenGL.GL_POLYGON_SMOOTH_HINT, OpenGL.GL_NICEST);
GLInitWindow(gl);
//绘制立体坐标系
gl.Rotate(-45, 0.0, 1.0, 0.0);
//确定坐标系原点
gl.PushMatrix();
gl.Color(1.0f, 1.0f, 1.0f);
//gl.Translate(-5, 0, -5);
gl.Sphere(gl.NewQuadric(), 0.2, 20, 20);
gl.PopMatrix();
//画网格线,X-Z平面
CoordPoint cpoint1 = new CoordPoint(0, 0, 0);
CoordPoint cpoint2 = new CoordPoint(x_coordinates.x, 0, z_coordinates.z);
gl.Color(0.9f, 0.9f, 0.9f);
GLDrawGrid(gl, cpoint1, cpoint2, 10);
//画网格线,
gl.PushMatrix();
gl.Rotate(90, 1.0, 0.0, 0.0);
gl.Translate(0.0f, 0.0f, -z_coordinates.z);
CoordPoint cpoint3 = new CoordPoint(0, 0, 0);
CoordPoint cpoint4 = new CoordPoint(x_coordinates.x, 0, z_coordinates.z);
gl.Color(0.9f, 0.9f, 0.0f);
GLDrawGrid(gl, cpoint3, cpoint4, 10);
gl.PopMatrix();
//画网格线
gl.PushMatrix();
gl.Rotate(90, 0.0, 0.0, 1.0);
//gl.Translate(5, 5, -0);
CoordPoint cpoint5 = new CoordPoint(0, 0, 0);
CoordPoint cpoint6 = new CoordPoint(x_coordinates.x, 0, z_coordinates.z);
gl.Color(0.0f, 0.9f, 0.0f);
GLDrawGrid(gl, cpoint5, cpoint6, 10);
gl.PopMatrix();
//画坐标轴
gl.PushMatrix();
gl.Color(0.0f, 1, 0.0f);
gl.Cylinder(gl.NewQuadric(), 0.05, 0.05, z_coordinates.z, 10, 5); //Z
gl.Translate(0, 0, z_coordinates.z);
gl.Cylinder(gl.NewQuadric(), 0.2, 0.0, 0.5, 10, 5); //Z
gl.PopMatrix();
gl.PushMatrix();
gl.Translate(0, 0.2, z_coordinates.z);
GLPrint(gl, "Z"); // Print GL Text ToThe Screen
gl.PopMatrix();
//画坐标轴
gl.PushMatrix();
gl.Color(1, 0, 0.0f);
gl.Rotate(90, 0.0, 1.0, 0.0);
gl.Cylinder(gl.NewQuadric(), 0.05, 0.05, x_coordinates.x, 10, 5); //X
gl.Translate(0, 0, x_coordinates.x);
gl.Cylinder(gl.NewQuadric(), 0.2, 0.0, 0.5, 10, 5); //X
gl.PopMatrix();
gl.PushMatrix();
gl.Rotate(90, 0.0, 1.0, 0.0);
gl.Translate(0, 0.2, x_coordinates.x);
GLPrint(gl, "X"); // Print GL Text ToThe Screen
gl.PopMatrix();
//画坐标轴
gl.PushMatrix();
gl.Color(1, 1, 0.0f);
gl.Rotate(-90, 1.0, 0.0, 0.0);
gl.Cylinder(gl.NewQuadric(), 0.05, 0.05, y_coordinates.y, 10, 5); //Y
gl.Translate(0, 0, y_coordinates.y);
gl.Cylinder(gl.NewQuadric(), 0.2, 0.0, 0.5, 10, 5); //Y
gl.PopMatrix();
gl.PushMatrix();
gl.Rotate(-90, 1.0, 0.0, 0.0);
gl.Translate(0.0, 0.6, y_coordinates.y);
gl.Rotate(90, 1.0, 0.0, 0.0);
GLPrint(gl, "Y"); // Print GL Text ToThe Screen
gl.PopMatrix();
/*****取消反锯齿*****/
gl.Disable(OpenGL.GL_BLEND);
gl.Disable(OpenGL.GL_LINE_SMOOTH);
gl.Disable(OpenGL.GL_POINT_SMOOTH);
gl.Disable(OpenGL.GL_POLYGON_SMOOTH);
}