func drawChunk(chunkX, chunkY int64) {
chunk := terrain.GetChunkAt(chunkX, chunkY)
if chunk.DisplayList == 0 {
chunk.DisplayList = gl.GenLists(1)
gl.NewList(chunk.DisplayList, gl.COMPILE)
for x := 0; x < config.ChunkArraySize()-1; x++ {
for y := 0; y < config.ChunkArraySize()-1; y++ {
gl.Normal3d(chunk.Normals.Get(x, y))
gl.Vertex3d(chunk.Vertices.Get(x, y))
x++
gl.Normal3d(chunk.Normals.Get(x, y))
gl.Vertex3d(chunk.Vertices.Get(x, y))
y++
gl.Normal3d(chunk.Normals.Get(x, y))
gl.Vertex3d(chunk.Vertices.Get(x, y))
x--
gl.Normal3d(chunk.Normals.Get(x, y))
gl.Vertex3d(chunk.Vertices.Get(x, y))
y--
}
}
gl.EndList()
}
gl.CallList(chunk.DisplayList)
}
func draw() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.PushMatrix()
gl.Rotated(view_rotx, 1.0, 0.0, 0.0)
gl.Rotated(view_roty, 0.0, 1.0, 0.0)
gl.Rotated(view_rotz, 0.0, 0.0, 1.0)
gl.PushMatrix()
gl.Translated(-3.0, -2.0, 0.0)
gl.Rotated(angle, 0.0, 0.0, 1.0)
gl.CallList(gear1)
gl.PopMatrix()
gl.PushMatrix()
gl.Translated(3.1, -2.0, 0.0)
gl.Rotated(-2.0*angle-9.0, 0.0, 0.0, 1.0)
gl.CallList(gear2)
gl.PopMatrix()
gl.PushMatrix()
gl.Translated(-3.1, 4.2, 0.0)
gl.Rotated(-2.0*angle-25.0, 0.0, 0.0, 1.0)
gl.CallList(gear3)
gl.PopMatrix()
gl.PopMatrix()
glfw.SwapBuffers()
Frames++
{
t := glfw.Time()
if t-T0 >= 5 {
seconds := (t - T0)
fps := float64(Frames) / seconds
print(Frames, " frames in ", int(seconds), " seconds = ", int(fps), " FPS\n")
T0 = t
Frames = 0
}
}
}
func draw() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.PushMatrix()
gl.Rotated(view_rotx, 1.0, 0.0, 0.0)
gl.Rotated(view_roty, 0.0, 1.0, 0.0)
gl.Rotated(view_rotz, 0.0, 0.0, 1.0)
gl.PushMatrix()
gl.Translated(-3.0, -2.0, 0.0)
gl.Rotated(angle, 0.0, 0.0, 1.0)
gl.CallList(gear1)
gl.PopMatrix()
gl.PushMatrix()
gl.Translated(3.1, -2.0, 0.0)
gl.Rotated(-2.0*angle-9.0, 0.0, 0.0, 1.0)
gl.CallList(gear2)
gl.PopMatrix()
gl.PushMatrix()
gl.Translated(-3.1, 4.2, 0.0)
gl.Rotated(-2.0*angle-25.0, 0.0, 0.0, 1.0)
gl.CallList(gear3)
gl.PopMatrix()
gl.PopMatrix()
sdl.GL_SwapBuffers()
Frames++
{
t := sdl.GetTicks()
if t-T0 >= 5000 {
seconds := (t - T0) / 1000.0
fps := Frames / seconds
print(Frames, " frames in ", seconds, " seconds = ", fps, " FPS\n")
T0 = t
Frames = 0
}
}
}
func plot_list(list uint) {
gl.Enable(gl.BLEND)
gl.Enable(gl.POINT_SMOOTH)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.PointSize(1.0)
gl.LoadIdentity()
gl.Rotated(xrot, 1, 0, 0)
gl.Rotated(yrot, 0, 1, 0)
gl.Rotated(zrot, 0, 0, 1)
gl.Scaled(scale, scale, scale)
gl.Translated(xoff, yoff, zoff)
gl.CallList(list)
gl.Flush()
}
