Golang sdl.GetTicks函数代码示例

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本文整理汇总了Golang中github.com/banthar/Go-SDL/sdl.GetTicks函数的典型用法代码示例。如果您正苦于以下问题：Golang GetTicks函数的具体用法？Golang GetTicks怎么用？Golang GetTicks使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了GetTicks函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: RunLoop

func (self *AppStateManager) RunLoop() {
	done := false
	last_ticks := sdl.GetTicks()
	for !done {
		//		for ;sdl.GetTicks()-last_ticks < 10;time.Sleep(1) {}
		current_ticks := sdl.GetTicks()
		timeStepMS := current_ticks - last_ticks
		time_step := float32(timeStepMS) / 1000.0

		done = self.HandleEvents()
		self.Process(time_step)
		last_ticks = current_ticks
	}
}

开发者ID:pzsz，项目名称:glutils，代码行数:14，代码来源:appstate.go

示例2: NewFramerate

func NewFramerate() *FPSmanager {
	return &FPSmanager{
		framecount: 0,
		rate:       FPS_DEFAULT,
		rateticks:  (1000.0 / float32(FPS_DEFAULT)),
		lastticks:  sdl.GetTicks(),
	}
}

开发者ID:dmbreaker，项目名称:Go-SDL，代码行数:8，代码来源:framerate.go

示例3: FramerateDelay

func (manager *FPSmanager) FramerateDelay() {
	var current_ticks, target_ticks, the_delay uint32

	// next frame
	manager.framecount++

	// get/calc ticks
	current_ticks = sdl.GetTicks()
	target_ticks = manager.lastticks + uint32(float32(manager.framecount)*manager.rateticks)

	if current_ticks <= target_ticks {
		the_delay = target_ticks - current_ticks
		sdl.Delay(the_delay)
	} else {
		manager.framecount = 0
		manager.lastticks = sdl.GetTicks()
	}
}

开发者ID:dmbreaker，项目名称:Go-SDL，代码行数:18，代码来源:framerate.go

示例4: fps

func (this *App) fps() {
	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
	}
}

开发者ID:swantescholz，项目名称:coding，代码行数:11，代码来源:app.go

示例5: draw

func draw() {

	t := float32(sdl.GetTicks()) / 500.0
	time := prg.GetUniformLocation("time")
	time.Uniform1f(t)

	gl.Clear(gl.COLOR_BUFFER_BIT)

	gl.DrawArrays(gl.TRIANGLE_STRIP, 0, 4)
	if gl.GetError() != gl.NO_ERROR {
		panic("draw error")
	}
}

开发者ID:shogg，项目名称:glvox，代码行数:13，代码来源:main.go

示例6: drawGLScene

// Here goes our drawing code
func drawGLScene() {
	// Clear the screen and depth buffer
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

	// Move left 1.5 units and into the screen 6.0 units.
	gl.LoadIdentity()
	gl.Translatef(-1.5, 0.0, -6.0)
	gl.Rotatef(float32(rtri), 0.0, 1.0, 0.0) // Rotate the triangle on the Y axis

	gl.Begin(gl.TRIANGLES)       // Draw triangles
	gl.Color3f(1.0, 0.0, 0.0)    // Set The Color To Red
	gl.Vertex3f(0.0, 1.0, 0.0)   // top
	gl.Color3f(0.0, 1.0, 0.0)    // Set The Color To Red
	gl.Vertex3f(-1.0, -1.0, 0.0) // bottom left
	gl.Color3f(0.0, 0.0, 1.0)    // Set The Color To Red
	gl.Vertex3f(1.0, -1.0, 0.0)  // bottom right
	gl.End()                     // finish drawing the triangle

	// Move right 3 units
	gl.LoadIdentity()
	gl.Translatef(1.5, 0.0, -6.0)
	gl.Color3f(0.5, 0.5, 1.0)                 // Set The Color To Blue One Time Only
	gl.Rotatef(float32(rquad), 1.0, 0.0, 0.0) // rotate the quad on the X axis

	gl.Begin(gl.QUADS)           // draw quads
	gl.Vertex3f(-1.0, 1.0, 0.0)  // top left
	gl.Vertex3f(1.0, 1.0, 0.0)   // top right
	gl.Vertex3f(1.0, -1.0, 0.0)  // bottom right
	gl.Vertex3f(-1.0, -1.0, 0.0) // bottom left
	gl.End()                     // done drawing the quad

	// Draw to the screen
	sdl.GL_SwapBuffers()

	rtri += 0.2   // Increase The Rotation Variable For The Triangle
	rquad -= 0.15 // Decrease The Rotation Variable For The Quad

	// Gather our frames per second
	frames++
	t := sdl.GetTicks()
	if t-t0 >= 5000 {
		seconds := (t - t0) / 1000.0
		fps := frames / seconds
		fmt.Println(frames, "frames in", seconds, "seconds =", fps, "FPS")
		t0 = t
		frames = 0
	}
}

开发者ID:navneet1v，项目名称:opengl-go-tutorials，代码行数:49，代码来源:lesson04.go

示例7: drawGLScene

// Here goes our drawing code
func drawGLScene(sector Sector) {
	xtrans := gl.GLfloat(-xpos)
	ztrans := gl.GLfloat(-zpos)
	ytrans := gl.GLfloat(-walkbias - 0.25)
	scenroty := gl.GLfloat(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(float32(lookupdown), 1.0, 0.0, 0.0)
	// Rotate depending on direction player is facing
	gl.Rotatef(float32(scenroty), 0.0, 1.0, 0.0)
	// translate the scene based on player position
	gl.Translatef(float32(xtrans), float32(ytrans), float32(ztrans))

	gl.BindTexture(gl.TEXTURE_2D, uint(textures[filter]))

	for _, vertices := range sector {
		gl.Begin(gl.TRIANGLES)
		for _, triangle := range *vertices {
			gl.Normal3f(0.0, 0.0, 1.0)
			gl.TexCoord2f(float32(triangle.u), float32(triangle.v))
			gl.Vertex3f(float32(triangle.x), float32(triangle.y), float32(triangle.z))
		}
		gl.End()
	}

	// Draw to the screen
	sdl.GL_SwapBuffers()

	// Gather our frames per second
	frames++
	t := sdl.GetTicks()
	if t-t0 >= 5000 {
		seconds := (t - t0) / 1000.0
		fps := frames / seconds
		fmt.Println(frames, "frames in", seconds, "seconds =", fps, "FPS")
		t0 = t
		frames = 0
	}
}

开发者ID:navneet1v，项目名称:opengl-go-tutorials，代码行数:46，代码来源:lesson10.go

示例8: draw

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
		}
	}
}

开发者ID:jayschwa，项目名称:examples，代码行数:43，代码来源:main.go

示例9: fps

func fps() uint32 {

	t := sdl.GetTicks()
	frames++

	if t0 == 0 {
		t0 = t
		frames = 0
		return 0
	}
	if t-t0 > 2000 {
		t0 += (t - t0) / 2
		frames /= 2
	}
	if t-t0 == 0 {
		return 0
	}
	fps := 1000 * frames / (t - t0)
	return fps
}

开发者ID:shogg，项目名称:glfps，代码行数:20，代码来源:glfps.go

示例10: drawGLScene

// Here goes our drawing code
func drawGLScene() {
	// Clear the screen and depth buffer
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

	// reset the view
	gl.LoadIdentity()

	// Draw to the screen
	sdl.GL_SwapBuffers()

	// Gather our frames per second
	frames++
	t := sdl.GetTicks()
	if t-t0 >= 5000 {
		seconds := (t - t0) / 1000.0
		fps := frames / seconds
		fmt.Println(frames, "frames in", seconds, "seconds =", fps, "FPS")
		t0 = t
		frames = 0
	}
}

开发者ID:navneet1v，项目名称:opengl-go-tutorials，代码行数:22，代码来源:lesson01.go

示例11: drawGLScene

// Here goes our drawing code
func drawGLScene() {
	// Clear the screen and depth buffer
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

	// Move left 1.5 units and into the screen 6.0 units.
	gl.LoadIdentity()
	gl.Translatef(-1.5, 0.0, -6.0)

	gl.Begin(gl.TRIANGLES)       // Draw triangles
	gl.Vertex3f(0.0, 1.0, 0.0)   // top
	gl.Vertex3f(-1.0, -1.0, 0.0) // bottom left
	gl.Vertex3f(1.0, -1.0, 0.0)  // bottom right
	gl.End()                     // finish drawing the triangle

	// Move right 3 units
	gl.Translatef(3.0, 0.0, 0.0)

	gl.Begin(gl.QUADS)           // draw quads
	gl.Vertex3f(-1.0, 1.0, 0.0)  // top left
	gl.Vertex3f(1.0, 1.0, 0.0)   // top right
	gl.Vertex3f(1.0, -1.0, 0.0)  // bottom right
	gl.Vertex3f(-1.0, -1.0, 0.0) // bottom left
	gl.End()                     // done drawing the quad

	// Draw to the screen
	sdl.GL_SwapBuffers()

	// Gather our frames per second
	frames++
	t := sdl.GetTicks()
	if t-t0 >= 5000 {
		seconds := (t - t0) / 1000.0
		fps := frames / seconds
		fmt.Println(frames, "frames in", seconds, "seconds =", fps, "FPS")
		t0 = t
		frames = 0
	}
}

开发者ID:shogg，项目名称:opengl-go-tutorials，代码行数:39，代码来源:lesson02.go

示例12: drawGLScene

// Here goes our drawing code
func drawGLScene() {
	// Clear the screen and depth buffer
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

	// Move left 1.5 units and into the screen 6.0 units.
	gl.LoadIdentity()
	gl.Translatef(0.0, 0.0, float32(z)) // translate by z

	gl.Rotatef(float32(xrot), 1.0, 0.0, 0.0) /* Rotate On The X Axis */
	gl.Rotatef(float32(yrot), 0.0, 1.0, 0.0) /* Rotate On The Y Axis */

	/* Select Our Texture */
	gl.BindTexture(gl.TEXTURE_2D, uint(textures[filter])) // based on filter

	gl.Begin(gl.QUADS)

	// Front face
	gl.Normal3f(0.0, 0.0, 1.0) // Normal Pointing Towards Viewer
	gl.TexCoord2f(0.0, 1.0)
	gl.Vertex3f(-1.0, -1.0, 1.0) // Bottom left
	gl.TexCoord2f(1.0, 1.0)
	gl.Vertex3f(1.0, -1.0, 1.0) // Bottom right
	gl.TexCoord2f(1.0, 0.0)
	gl.Vertex3f(1.0, 1.0, 1.0) // Top right
	gl.TexCoord2f(0.0, 0.0)
	gl.Vertex3f(-1.0, 1.0, 1.0) // Top left

	// Back Face
	gl.Normal3f(0.0, 0.0, -1.0) // Normal Pointing Away From Viewer
	gl.TexCoord2f(0.0, 0.0)
	gl.Vertex3f(-1.0, -1.0, -1.0) // Bottom right
	gl.TexCoord2f(0.0, 1.0)
	gl.Vertex3f(-1.0, 1.0, -1.0) // Top right
	gl.TexCoord2f(1.0, 1.0)
	gl.Vertex3f(1.0, 1.0, -1.0) // Top left
	gl.TexCoord2f(1.0, 0.0)
	gl.Vertex3f(1.0, -1.0, -1.0) // Bottom left

	// Top Face
	gl.Normal3f(0.0, 1.0, 0.0) // Normal Pointing Up
	gl.TexCoord2f(1.0, 1.0)
	gl.Vertex3f(-1.0, 1.0, -1.0) // Top left
	gl.TexCoord2f(1.0, 0.0)
	gl.Vertex3f(-1.0, 1.0, 1.0) // Bottom left
	gl.TexCoord2f(0.0, 0.0)
	gl.Vertex3f(1.0, 1.0, 1.0) // Bottom right
	gl.TexCoord2f(0.0, 1.0)
	gl.Vertex3f(1.0, 1.0, -1.0) // Top right

	// Bottom Face
	gl.Normal3f(0.0, -1.0, 0.0) // Normal Pointing Down
	gl.TexCoord2f(0.0, 1.0)
	gl.Vertex3f(-1.0, -1.0, -1.0) // Top right
	gl.TexCoord2f(1.0, 1.0)
	gl.Vertex3f(1.0, -1.0, -1.0) // Top left
	gl.TexCoord2f(1.0, 0.0)
	gl.Vertex3f(1.0, -1.0, 1.0) // Bottom left
	gl.TexCoord2f(0.0, 0.0)
	gl.Vertex3f(-1.0, -1.0, 1.0) // Bottom right

	// Right face
	gl.Normal3f(1.0, 0.0, 0.0) // Normal Pointing Right
	gl.TexCoord2f(0.0, 0.0)
	gl.Vertex3f(1.0, -1.0, -1.0) // Bottom right
	gl.TexCoord2f(0.0, 1.0)
	gl.Vertex3f(1.0, 1.0, -1.0) // Top right
	gl.TexCoord2f(1.0, 1.0)
	gl.Vertex3f(1.0, 1.0, 1.0) // Top left
	gl.TexCoord2f(1.0, 0.0)
	gl.Vertex3f(1.0, -1.0, 1.0) // Bottom left

	// Left Face
	gl.Normal3f(-1.0, 0.0, 0.0) // Normal Pointing Left
	gl.TexCoord2f(1.0, 0.0)
	gl.Vertex3f(-1.0, -1.0, -1.0) // Bottom left
	gl.TexCoord2f(0.0, 0.0)
	gl.Vertex3f(-1.0, -1.0, 1.0) // Bottom right
	gl.TexCoord2f(0.0, 1.0)
	gl.Vertex3f(-1.0, 1.0, 1.0) // Top right
	gl.TexCoord2f(1.0, 1.0)
	gl.Vertex3f(-1.0, 1.0, -1.0) // Top left

	gl.End()

	sdl.GL_SwapBuffers()

	xrot += xspeed
	yrot += yspeed

	// Gather our frames per second
	frames++
	t := sdl.GetTicks()
	if t-t0 >= 5000 {
		seconds := (t - t0) / 1000.0
		fps := frames / seconds
		fmt.Println(frames, "frames in", seconds, "seconds =", fps, "FPS")
		t0 = t
		frames = 0
	}
//.........这里部分代码省略.........

开发者ID:navneet1v，项目名称:opengl-go-tutorials，代码行数:101，代码来源:lesson08.go

示例13: drawGLScene

// Here goes our drawing code
func drawGLScene() {
	// Clear the screen and depth buffer
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

	// Move left 1.5 units and into the screen 6.0 units.
	gl.LoadIdentity()
	gl.Translatef(0.0, 0.0, -7.0)

	gl.Rotatef(float32(xrot), 1.0, 0.0, 0.0) /* Rotate On The X Axis */
	gl.Rotatef(float32(yrot), 0.0, 1.0, 0.0) /* Rotate On The Y Axis */
	gl.Rotatef(float32(zrot), 0.0, 0.0, 1.0) /* Rotate On The Z Axis */

	/* Select Our Texture */
	gl.BindTexture(gl.TEXTURE_2D, uint(texture))

	gl.Begin(gl.QUADS) // Draw a quad
	/* Front Face */
	gl.TexCoord2f(0.0, 1.0)
	gl.Vertex3f(-1.0, -1.0, 1.0) // Bottom left
	gl.TexCoord2f(1.0, 1.0)
	gl.Vertex3f(1.0, -1.0, 1.0) // Bottom right
	gl.TexCoord2f(1.0, 0.0)
	gl.Vertex3f(1.0, 1.0, 1.0) // Top right
	gl.TexCoord2f(0.0, 0.0)
	gl.Vertex3f(-1.0, 1.0, 1.0) // Top left

	/* Back Face */
	gl.TexCoord2f(0.0, 0.0)
	gl.Vertex3f(-1.0, -1.0, -1.0) // Bottom right
	gl.TexCoord2f(0.0, 1.0)
	gl.Vertex3f(-1.0, 1.0, -1.0) // Top right
	gl.TexCoord2f(1.0, 1.0)
	gl.Vertex3f(1.0, 1.0, -1.0) // Top left
	gl.TexCoord2f(1.0, 0.0)
	gl.Vertex3f(1.0, -1.0, -1.0) // Bottom left

	/* Top Face */
	gl.TexCoord2f(1.0, 1.0)
	gl.Vertex3f(-1.0, 1.0, -1.0) // Top left
	gl.TexCoord2f(1.0, 0.0)
	gl.Vertex3f(-1.0, 1.0, 1.0) // Bottom left
	gl.TexCoord2f(0.0, 0.0)
	gl.Vertex3f(1.0, 1.0, 1.0) // Bottom right
	gl.TexCoord2f(0.0, 1.0)
	gl.Vertex3f(1.0, 1.0, -1.0) // Top right

	/* Bottom Face */
	gl.TexCoord2f(0.0, 1.0)
	gl.Vertex3f(-1.0, -1.0, -1.0) // Top right
	gl.TexCoord2f(1.0, 1.0)
	gl.Vertex3f(1.0, -1.0, -1.0) // Top left
	gl.TexCoord2f(1.0, 0.0)
	gl.Vertex3f(1.0, -1.0, 1.0) // Bottom left
	gl.TexCoord2f(0.0, 0.0)
	gl.Vertex3f(-1.0, -1.0, 1.0) // Bottom right

	/* Right face */
	gl.TexCoord2f(0.0, 0.0)
	gl.Vertex3f(1.0, -1.0, -1.0) // Bottom right
	gl.TexCoord2f(0.0, 1.0)
	gl.Vertex3f(1.0, 1.0, -1.0) // Top right
	gl.TexCoord2f(1.0, 1.0)
	gl.Vertex3f(1.0, 1.0, 1.0) // Top left
	gl.TexCoord2f(1.0, 0.0)
	gl.Vertex3f(1.0, -1.0, 1.0) // Bottom left

	/* Left Face */
	gl.TexCoord2f(1.0, 0.0)
	gl.Vertex3f(-1.0, -1.0, -1.0) // Bottom left
	gl.TexCoord2f(0.0, 0.0)
	gl.Vertex3f(-1.0, -1.0, 1.0) // Bottom right
	gl.TexCoord2f(0.0, 1.0)
	gl.Vertex3f(-1.0, 1.0, 1.0) // Top right
	gl.TexCoord2f(1.0, 1.0)
	gl.Vertex3f(-1.0, 1.0, -1.0) // Top left
	gl.End()                     // done drawing the quad

	// Draw to the screen
	sdl.GL_SwapBuffers()

	xrot += 0.3 /* X Axis Rotation */
	yrot += 0.2 /* Y Axis Rotation */
	zrot += 0.4 /* Z Axis Rotation */

	// Gather our frames per second
	frames++
	t := sdl.GetTicks()
	if t-t0 >= 5000 {
		seconds := (t - t0) / 1000.0
		fps := frames / seconds
		fmt.Println(frames, "frames in", seconds, "seconds =", fps, "FPS")
		t0 = t
		frames = 0
	}
}

开发者ID:shogg，项目名称:opengl-go-tutorials，代码行数:96，代码来源:lesson06.go

示例14: drawGLScene

// Here goes our drawing code
func drawGLScene() {
	// Clear the screen and depth buffer
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
	gl.BindTexture(gl.TEXTURE_2D, uint(texture))

	for loop, star := range stars {
		gl.LoadIdentity()
		gl.Translatef(0.0, 0.0, float32(zoom))
		gl.Rotatef(float32(tilt), 1.0, 0.0, 0.0)
		gl.Rotatef(float32(star.angle), 0.0, 1.0, 0.0)
		gl.Translatef(float32(star.dist), 0.0, 0.0)
		gl.Rotatef(float32(-star.angle), 0.0, 1.0, 0.0)
		gl.Rotatef(float32(-tilt), 1.0, 0.0, 0.0)

		if twinkle {
			other := stars[(num-loop)-1]
			gl.Color4ub(uint8(other.r), uint8(other.g), uint8(other.b), 255)
			gl.Begin(gl.QUADS)
			gl.TexCoord2f(0.0, 0.0)
			gl.Vertex3f(-1.0, -1.0, 0.0)
			gl.TexCoord2f(1.0, 0.0)
			gl.Vertex3f(1.0, -1.0, 0.0)
			gl.TexCoord2f(1.0, 1.0)
			gl.Vertex3f(1.0, 1.0, 0.0)
			gl.TexCoord2f(0.0, 1.0)
			gl.Vertex3f(-1.0, 1.0, 0.0)
			gl.End()
		}

		gl.Rotatef(float32(spin), 0.0, 0.0, 1.0)
		gl.Color4ub(uint8(star.r), uint8(star.g), uint8(star.b), 255)
		gl.Begin(gl.QUADS)
		gl.TexCoord2f(0.0, 0.0)
		gl.Vertex3f(-1.0, -1.0, 0.0)
		gl.TexCoord2f(1.0, 0.0)
		gl.Vertex3f(1.0, -1.0, 0.0)
		gl.TexCoord2f(1.0, 1.0)
		gl.Vertex3f(1.0, 1.0, 0.0)
		gl.TexCoord2f(0.0, 1.0)
		gl.Vertex3f(-1.0, 1.0, 0.0)
		gl.End()

		spin += 0.01
		star.angle += gl.GLfloat(loop) / gl.GLfloat(num)
		star.dist -= 0.01

		if star.dist < 0.0 {
			star.dist += 5.0
			star.r = gl.GLubyte(rand.Float32() * 255)
			star.g = gl.GLubyte(rand.Float32() * 255)
			star.b = gl.GLubyte(rand.Float32() * 255)
		}
	}

	// Draw to the screen
	sdl.GL_SwapBuffers()

	// Gather our frames per second
	frames++
	t := sdl.GetTicks()
	if t-t0 >= 5000 {
		seconds := (t - t0) / 1000.0
		fps := frames / seconds
		fmt.Println(frames, "frames in", seconds, "seconds =", fps, "FPS")
		t0 = t
		frames = 0
	}
}

开发者ID:navneet1v，项目名称:opengl-go-tutorials，代码行数:69，代码来源:lesson09.go

示例15: drawGLScene

// Here goes our drawing code
func drawGLScene() {
	// Clear the screen and depth buffer
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

	// Move left 1.5 units and into the screen 6.0 units.
	gl.LoadIdentity()
	gl.Translatef(-1.5, 0.0, -6.0)
	gl.Rotatef(float32(rtri), 0.0, 1.0, 0.0) // Rotate the triangle on the Y axis

	gl.Begin(gl.TRIANGLES) // Draw triangles

	gl.Color3f(1.0, 0.0, 0.0)    /* Red                           */
	gl.Vertex3f(0.0, 1.0, 0.0)   /* Top Of Triangle (Front)       */
	gl.Color3f(0.0, 1.0, 0.0)    /* Green                         */
	gl.Vertex3f(-1.0, -1.0, 1.0) /* Left Of Triangle (Front)      */
	gl.Color3f(0.0, 0.0, 1.0)    /* Blue                          */
	gl.Vertex3f(1.0, -1.0, 1.0)  /* Right Of Triangle (Front)     */

	gl.Color3f(1.0, 0.0, 0.0)    /* Red                           */
	gl.Vertex3f(0.0, 1.0, 0.0)   /* Top Of Triangle (Right)       */
	gl.Color3f(0.0, 0.0, 1.0)    /* Blue                          */
	gl.Vertex3f(1.0, -1.0, 1.0)  /* Left Of Triangle (Right)      */
	gl.Color3f(0.0, 1.0, 0.0)    /* Green                         */
	gl.Vertex3f(1.0, -1.0, -1.0) /* Right Of Triangle (Right)     */

	gl.Color3f(1.0, 0.0, 0.0)     /* Red                           */
	gl.Vertex3f(0.0, 1.0, 0.0)    /* Top Of Triangle (Back)        */
	gl.Color3f(0.0, 1.0, 0.0)     /* Green                         */
	gl.Vertex3f(1.0, -1.0, -1.0)  /* Left Of Triangle (Back)       */
	gl.Color3f(0.0, 0.0, 1.0)     /* Blue                          */
	gl.Vertex3f(-1.0, -1.0, -1.0) /* Right Of Triangle (Back)      */

	gl.Color3f(1.0, 0.0, 0.0)     /* Red                           */
	gl.Vertex3f(0.0, 1.0, 0.0)    /* Top Of Triangle (Left)        */
	gl.Color3f(0.0, 0.0, 1.0)     /* Blue                          */
	gl.Vertex3f(-1.0, -1.0, -1.0) /* Left Of Triangle (Left)       */
	gl.Color3f(0.0, 1.0, 0.0)     /* Green                         */
	gl.Vertex3f(-1.0, -1.0, 1.0)  /* Right Of Triangle (Left)      */

	gl.End() // finish drawing the triangle

	// Move right 3 units
	gl.LoadIdentity()
	gl.Translatef(1.5, 0.0, -7.0)
	gl.Rotatef(float32(rquad), 1.0, 1.0, 1.0) // rotate the quad on the X axis

	gl.Begin(gl.QUADS)            // draw quads
	gl.Color3f(0.0, 1.0, 0.0)     // Set The Color To Green
	gl.Vertex3f(1.0, 1.0, -1.0)   // Top Right Of The Quad (Top)
	gl.Vertex3f(-1.0, 1.0, -1.0)  // Top Left Of The Quad (Top)
	gl.Vertex3f(-1.0, 1.0, 1.0)   // Bottom Left Of The Quad (Top)
	gl.Vertex3f(1.0, 1.0, 1.0)    // Bottom Right Of The Quad (Top)
	gl.Color3f(1.0, 0.5, 0.0)     // Set The Color To Orange
	gl.Vertex3f(1.0, -1.0, 1.0)   // Top Right Of The Quad (Bottom)
	gl.Vertex3f(-1.0, -1.0, 1.0)  // Top Left Of The Quad (Bottom)
	gl.Vertex3f(-1.0, -1.0, -1.0) // Bottom Left Of The Quad (Bottom)
	gl.Vertex3f(1.0, -1.0, -1.0)  // Bottom Right Of The Quad (Bottom)
	gl.Color3f(1.0, 0.0, 0.0)     // Set The Color To Red
	gl.Vertex3f(1.0, 1.0, 1.0)    // Top Right Of The Quad (Front)
	gl.Vertex3f(-1.0, 1.0, 1.0)   // Top Left Of The Quad (Front)
	gl.Vertex3f(-1.0, -1.0, 1.0)  // Bottom Left Of The Quad (Front)
	gl.Vertex3f(1.0, -1.0, 1.0)   // Bottom Right Of The Quad (Front)
	gl.Color3f(1.0, 1.0, 0.0)     // Set The Color To Yellow
	gl.Vertex3f(1.0, -1.0, -1.0)  // Bottom Left Of The Quad (Back)
	gl.Vertex3f(-1.0, -1.0, -1.0) // Bottom Right Of The Quad (Back)
	gl.Vertex3f(-1.0, 1.0, -1.0)  // Top Right Of The Quad (Back)
	gl.Vertex3f(1.0, 1.0, -1.0)   // Top Left Of The Quad (Back)
	gl.Color3f(0.0, 0.0, 1.0)     // Set The Color To Blue
	gl.Vertex3f(-1.0, 1.0, 1.0)   // Top Right Of The Quad (Left)
	gl.Vertex3f(-1.0, 1.0, -1.0)  // Top Left Of The Quad (Left)
	gl.Vertex3f(-1.0, -1.0, -1.0) // Bottom Left Of The Quad (Left)
	gl.Vertex3f(-1.0, -1.0, 1.0)  // Bottom Right Of The Quad (Left)
	gl.Color3f(1.0, 0.0, 1.0)     // Set The Color To Violet
	gl.Vertex3f(1.0, 1.0, -1.0)   // Top Right Of The Quad (Right)
	gl.Vertex3f(1.0, 1.0, 1.0)    // Top Left Of The Quad (Right)
	gl.Vertex3f(1.0, -1.0, 1.0)   // Bottom Left Of The Quad (Right)
	gl.Vertex3f(1.0, -1.0, -1.0)  // Bottom Right Of The Quad (Right)
	gl.End()                      // done drawing the quad

	// Draw to the screen
	sdl.GL_SwapBuffers()

	rtri += 0.2   // Increase The Rotation Variable For The Triangle
	rquad -= 0.15 // Decrease The Rotation Variable For The Quad

	// Gather our frames per second
	frames++
	t := sdl.GetTicks()
	if t-t0 >= 5000 {
		seconds := (t - t0) / 1000.0
		fps := frames / seconds
		fmt.Println(frames, "frames in", seconds, "seconds =", fps, "FPS")
		t0 = t
		frames = 0
	}
}

开发者ID:shogg，项目名称:opengl-go-tutorials，代码行数:97，代码来源:lesson05.go

注：本文中的github.com/banthar/Go-SDL/sdl.GetTicks函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。