#### Archived

This topic is now archived and is closed to further replies.

# 6 degrees freedom in flight sim with glRotate* and glTranslate*

This topic is 6043 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

## Recommended Posts

Hi, I''ve written a flight sim. For the viewpoint, i don''t want to use gluLookAt(). So I use glRotate* and glTranslate*. But I''ve some problems. Here is a piece of my sim code: POINT mpos; void input() { GetCursorPos(&mpos); SetCursorPos(SCREENWIDTH/2,SCREENHEIGHT/2); heading += (float)(320 - mpos.x)/100 * 5; yrot = heading; updown -= (float)(240 - mpos.y)/100 * 5; //Piover180 is simply a conversion factor //for converting between degrees and //radians float speed=0.4f; if(key[VK_UP]) { xpos -=(float)sin(heading*piover180)*speed; zpos -=(float)cos(heading*piover180)*speed; ypos -=(float)sin(updown*piover180)*speed; } if(key[VK_DOWN]) { xpos +=(float)sin(heading*piover180)*speed; zpos +=(float)cos(heading*piover180)*speed; ypos +=(float)sin(updown*piover180)*speed; } } void DrawScene() { ......... GLfloat sceneroty = 360.0f - yrot; glRotatef(updown,1.0f,0,0); glRotatef(sceneroty,0,1.0f,0); glTranslatef(-xpos,-ypos,-zpos); ......... } if I test test the sim, it looks to be correct. But later, I''ve found a bug. I think that there is a bug in calculation of "ypos". can anybody help me!!!!!

1. 1
2. 2
Rutin
24
3. 3
4. 4
JoeJ
18
5. 5

• 14
• 19
• 11
• 11
• 9
• ### Forum Statistics

• Total Topics
631761
• Total Posts
3002178
×