func display() {
gl.Clear(gl.COLOR_BUFFER_BIT)
bitmap_output(40, 35, "This is written in a GLUT bitmap font.", glut.BITMAP_TIMES_ROMAN_24)
bitmap_output(30, 210, "More bitmap text is a fixed 9 by 15 font.", glut.BITMAP_9_BY_15)
bitmap_output(70, 240, " Helvetica is yet another bitmap font.", glut.BITMAP_HELVETICA_18)
gl.MatrixMode(gl.PROJECTION)
gl.PushMatrix()
gl.LoadIdentity()
glu.Perspective(40.0, 1.0, 0.1, 20.0)
gl.MatrixMode(gl.MODELVIEW)
gl.PushMatrix()
glu.LookAt(0.0, 0.0, 4.0, /* eye is at (0,0,30) */
0.0, 0.0, 0.0, /* center is at (0,0,0) */
0.0, 1.0, 0.0) /* up is in postivie Y direction */
gl.PushMatrix()
gl.Translatef(0, 0, -4)
gl.Rotatef(50, 0, 1, 0)
stroke_output(-2.5, 1.1, " This is written in a", glut.STROKE_ROMAN)
stroke_output(-2.5, 0, " GLUT stroke font.", glut.STROKE_ROMAN)
stroke_output(-2.5, -1.1, "using 3D perspective.", glut.STROKE_ROMAN)
gl.PopMatrix()
gl.MatrixMode(gl.MODELVIEW)
gl.PopMatrix()
gl.MatrixMode(gl.PROJECTION)
gl.PopMatrix()
gl.MatrixMode(gl.MODELVIEW)
gl.Flush()
}
func display() {
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Begin(gl.TRIANGLES)
gl.Color3f(0.0, 0.0, 1.0) /* blue */
gl.Vertex2i(0, 0)
gl.Color3f(0.0, 1.0, 0.0) /* green */
gl.Vertex2i(200, 200)
gl.Color3f(1.0, 0.0, 0.0) /* red */
gl.Vertex2i(20, 200)
gl.End()
gl.Flush() /* Single buffered, so needs a flush. */
}
func display() {
gl.Clear(gl.COLOR_BUFFER_BIT)
drawShip(angle)
drawBullets()
glut.SwapBuffers()
}