Opengl draw semi circle c++

//semi-circle roof
	//fix variable naming
	int centerx = 400;//x axis center
	int centery = 400;//y axis center
	int roofr = 100;//radius
	int roofd = 200;//diameter
	float PI = 3.141592653589793238f;
	float semicircleangle = PI * 1.0f;
	int steps = 100;
	glBegin(GL_TRIANGLE_FAN);

	for (int i = 0; i < steps; i++) {
		float theta = semicircleangle * float(i) / float(steps);//get the current angle
		float x = roofr * cosf(theta);//calculate the x component
		float y = roofr * sinf(theta);//calculate the y component
		glVertex2f(x + centerx, y + centery);//output vertex

	}
	glEnd();

Similar codes

0 vote345 views1 answer
Get the absolute path of a boost filePath as a string
C++
2 votes294 views2 answers
C++ sum the digits of an integer
C++
45 votes372 views6 answers
Input in c++
C++
2 votes336 views2 answers
C++ int to qstring
C++
5 votes296 views3 answers
Sql server convert utc to pst SQL command
C++
1 vote314 views1 answer
Cuda dim3
C++
0 vote342 views1 answer
Amusia
C++
0 vote316 views2 answers
Create a file
C++
0 vote335 views1 answer
Temporary mobile number
C++
0 vote335 views1 answer
What does npl mean?
C++