在OpenGL中定位对象数组
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编辑：
我仍然没有得到正确的位置，所有的球都在原点绘制，我想我可能把东西放错了位置...
球cpp
#include \"Ball.h\"
#include \"Vector2f.h\"
#include \"Vector3f.h\"
#include \"Glut/glut.h\"
#include \"GL/gl.h\"
#include \"GL/glu.h\"
Ball::Ball(void)
{
Vector3f Temp_position;
position = Temp_position;
Vector3f Temp_velocity;
velocity = Temp_velocity;
}
Ball::~Ball(void)
{
}
void Ball::SetPos(Vector3f New_position)
{
position = New_position;
}
void Ball::Draw()
{
glPushMatrix();
glTranslatef(position.X(), position.Y(), position.Z());
glColor3d(1, 0, 0);
glutSolidSphere(0.3, 50, 50);
glPopMatrix();
}
void Ball::ArrayPosition()
{
Ball *Yellowball = new Ball[8];
Yellowball[0].SetPos(Vector3f (position.X(), position.Y(), position.Z()));
Yellowball[1].SetPos(Vector3f (position.X(), position.Y(), position.Z()));
Yellowball[2].SetPos(Vector3f (position.X(), position.Y(), position.Z()));
Yellowball[3].SetPos(Vector3f (position.X(), position.Y(), position.Z()));
Yellowball[4].SetPos(Vector3f (position.X(), position.Y(), position.Z()));
Yellowball[5].SetPos(Vector3f (position.X(), position.Y(), position.Z()));
Yellowball[6].SetPos(Vector3f (position.X(), position.Y(), position.Z()));
Yellowball[7].SetPos(Vector3f (position.X(), position.Y(), position.Z()));
}
void Ball::DrawYellow()
{
glPushMatrix();
glColor3f(2,1,0);
glutSolidSphere(0.3, 50, 50);
glPopMatrix();
}
void Ball::SetVel(Vector3f New_velocity)
{
velocity = New_velocity;
}
Vector3f Ball::GetPos()
{
Vector3f temp;
temp = position;
return temp;
}
Vector3f Ball::GetVel()
{
Vector3f temp;
temp = velocity;
return temp;
}
Ball Redball;
float BALL_RED_START = 0;
float RADIUS_OF_BALL = 0.3;
float BALL_RED_END = 8;
Ball Yellowball;
float BALL_YELLOW_START = 0;
float BALL_YELLOW_END = 8;
init()
Ball *Yellowball = new Ball[8];
for(int i = BALL_YELLOW_START; i < BALL_YELLOW_START; i++)
{
Yellowball[0].SetPos(Vector3f (1,0,0));
Yellowball[1].SetPos(Vector3f (0,0,0));
Yellowball[2].SetPos(Vector3f (0,0,0));
Yellowball[3].SetPos(Vector3f (0,0,0));
Yellowball[4].SetPos(Vector3f (0,0,0));
Yellowball[5].SetPos(Vector3f (0,0,0));
Yellowball[6].SetPos(Vector3f (0,0,0));
Yellowball[7].SetPos(Vector3f (0,0,0));
}
Draw method:
Ball Yellowball[8];
for (int i = BALL_YELLOW_START; i<BALL_YELLOW_END;i++)
{
glColor3f(2,1,0);
Yellowball[i].DrawYellow();
}
glPopMatrix();
没有找到相关结果
已邀请:
1 个回复
泻伴墓荒
// first of all, include the x,y position (assuming 2D, since pool) in the Ball object: class Ball { //... private: int xpos, ypos; //... };确保游戏结束后，自己进行清理。然后在您的Ball :: DrawYellow（）中执行以下操作：Ball::DrawYellow() { glColor3f(/*yellow*/); // Set the color to yellow glTranslatef(-x, -y, 0); // Move to the position of the ball // Draw the ball glTranslatef(x, y, 0); // Move back to the default position }