Exemple #1
0
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()
	// Banthar's glu doesn't have this right now.
	// 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.) /* 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()
}
Exemple #2
0
func draw() {
	xtrans := -xpos
	ztrans := -zpos
	ytrans := -walkbias - 0.25
	scenroty := 360.0 - yrot

	// Clear the screen and depth buffer
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

	// reset the view
	gl.LoadIdentity()

	// Rotate up and down to look up and down
	gl.Rotatef(lookupdown, 1.0, 0.0, 0.0)
	// Rotate depending on direction player is facing
	gl.Rotatef(scenroty, 0.0, 1.0, 0.0)
	// translate the scene based on player position
	gl.Translatef(xtrans, ytrans-1.75, ztrans)

	for _, chunk := range chunks {
		for y := 0; y < 16; y++ {
			for x := 0; x < 16; x++ {
				for z := 0; z <= 16; z++ {
					if len(chunk.Data[y][x]) > z && chunk.Data[y][x][z] != "" {
						gl.PushMatrix()
						gl.Translated(
							float64(16*chunk.X+x),
							float64(z),
							float64(16*chunk.Y+y))
						gl.CallList(cubes[chunk.Data[y][x][z]])
						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
		}
	}
}
Exemple #3
0
func drawShip(angle gl.GLfloat) {
	gl.PushMatrix()
	gl.Translatef(x, y, 0.0)
	gl.Rotatef(angle, 0.0, 0.0, 1.0)
	if thrust {
		gl.Color3f(1.0, 0.0, 0.0)
		gl.Begin(gl.LINE_STRIP)
		gl.Vertex2f(-0.75, -0.5)
		gl.Vertex2f(-1.75, 0)
		gl.Vertex2f(-0.75, 0.5)
		gl.End()
	}
	gl.Color3f(1.0, 1.0, 0.0)
	gl.Begin(gl.LINE_LOOP)
	gl.Vertex2f(2.0, 0.0)
	gl.Vertex2f(-1.0, -1.0)
	gl.Vertex2f(-0.5, 0.0)
	gl.Vertex2f(-1.0, 1.0)
	gl.Vertex2f(2.0, 0.0)
	gl.End()
	if shield {
		gl.Color3f(0.1, 0.1, 1.0)
		gl.Begin(gl.LINE_LOOP)
		for rad := 0.0; rad < 12.0; rad += 1.0 {
			gl.Vertex2f(
				gl.GLfloat(2.3*math.Cos(2*float64(rad)/math.Pi)+0.2),
				gl.GLfloat(2.0*math.Sin(2*float64(rad)/math.Pi)))
		}
		gl.End()
	}
	gl.PopMatrix()
}
Exemple #4
0
func stroke_output(x, y gl.GLfloat, str string, font glut.StrokeFont) {
	gl.PushMatrix()
	gl.Translatef(x, y, 0)
	gl.Scalef(0.005, 0.005, 0.005)
	for _, ch := range str {
		font.Character(ch)
	}
	gl.PopMatrix()
}
Exemple #5
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
		}
	}
}
Exemple #6
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()

	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
		}
	}
}
Exemple #7
0
func glDisable2D() {
	gl.MatrixMode(gl.PROJECTION)
	gl.PopMatrix()
	gl.MatrixMode(gl.MODELVIEW)
	gl.PopMatrix()
}