func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity()
gl.Translatef(-1.5, 0, -6)
gl.Rotatef(trisAngle, 0, 1, 0)
gl.Begin(gl.TRIANGLES)
gl.Color3f(1, 0, 0)
gl.Vertex3f(0, 1, 0)
gl.Color3f(0, 1, 0)
gl.Vertex3f(-1, -1, 0)
gl.Color3f(0, 0, 1)
gl.Vertex3f(1, -1, 0)
gl.End()
gl.LoadIdentity()
gl.Translatef(1.5, 0, -6)
gl.Rotatef(quadAngle, 1, 0, 0)
gl.Color3f(0.5, 0.5, 1.0)
gl.Begin(gl.QUADS)
gl.Vertex3f(-1, 1, 0)
gl.Vertex3f(1, 1, 0)
gl.Vertex3f(1, -1, 0)
gl.Vertex3f(-1, -1, 0)
gl.End()
trisAngle += 0.2
quadAngle -= 0.15
glfw.SwapBuffers()
}
func draw() { // 从这里开始进行所有的绘制
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT) // 清除屏幕和深度缓存
gl.LoadIdentity() // 重置当前的模型观察矩阵
gl.Translatef(-1.5, 0.0, -6.0) // 左移 1.5 单位，并移入屏幕 6.0
gl.Rotatef(rtri, 0.0, 1.0, 0.0) // 绕Y轴旋转三角形
gl.Begin(gl.TRIANGLES) // 绘制三角形
gl.Color3f(1.0, 0.0, 0.0) // 设置当前色为红色
gl.Vertex3f(0.0, 1.0, 0.0) // 上顶点
gl.Color3f(0.0, 1.0, 0.0) // 设置当前色为绿色
gl.Vertex3f(-1.0, -1.0, 0.0) // 左下
gl.Color3f(0.0, 0.0, 1.0) // 设置当前色为蓝色
gl.Vertex3f(1.0, -1.0, 0.0) // 右下
gl.End() // 三角形绘制结束
gl.LoadIdentity() // 重置当前的模型观察矩阵
gl.Translatef(1.5, 0.0, -6.0) // 右移1.5单位,并移入屏幕 6.0
gl.Rotatef(rquad, 1.0, 0.0, 0.0) // 绕X轴旋转四边形
gl.Color3f(0.5, 0.5, 1.0) // 一次性将当前色设置为蓝色
gl.Begin(gl.QUADS) // 绘制正方形
gl.Vertex3f(-1.0, 1.0, 0.0) // 左上
gl.Vertex3f(1.0, 1.0, 0.0) // 右上
gl.Vertex3f(1.0, -1.0, 0.0) // 左下
gl.Vertex3f(-1.0, -1.0, 0.0) // 右下
gl.End()
rtri += 0.2 // 增加三角形的旋转变量
rquad -= 0.15 // 减少四边形的旋转变量
}
// Render a sphere with the correct orientation (poles along y-axis)
// Also makes a correction to avoid lighting flicker.
// TODO: Replace with geodesic
func Sphere(radius float32, granularity int) {
glh.With(glh.Matrix{gl.MODELVIEW}, func() {
// Needed to avoid a strange lighting effect
gl.Rotatef(90, 0, 1, 0)
// Rotate so that poles are on the y-axis
gl.Rotatef(90, 1, 0, 0)
glu.Sphere(quadric, radius, granularity, granularity)
})
}
func main() {
var err error
if err = glfw.Init(); err != nil {
log.Fatalf("%v\n", err)
return
}
defer glfw.Terminate()
// Open window with FSAA samples (if possible).
glfw.OpenWindowHint(glfw.FsaaSamples, 4)
if err = glfw.OpenWindow(400, 400, 0, 0, 0, 0, 0, 0, glfw.Windowed); err != nil {
log.Fatalf("%v\n", err)
return
}
defer glfw.CloseWindow()
glfw.SetWindowTitle("Aliasing Detector")
glfw.SetSwapInterval(1)
if samples := glfw.WindowParam(glfw.FsaaSamples); samples != 0 {
fmt.Printf("Context reports FSAA is supported with %d samples\n", samples)
} else {
fmt.Printf("Context reports FSAA is unsupported\n")
}
gl.MatrixMode(gl.PROJECTION)
glu.Perspective(0, 1, 0, 1)
for glfw.WindowParam(glfw.Opened) == 1 {
time := float32(glfw.Time())
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.LoadIdentity()
gl.Translatef(0.5, 0, 0)
gl.Rotatef(time, 0, 0, 1)
gl.Enable(GL_MULTISAMPLE_ARB)
gl.Color3f(1, 1, 1)
gl.Rectf(-0.25, -0.25, 0.25, 0.25)
gl.LoadIdentity()
gl.Translatef(-0.5, 0, 0)
gl.Rotatef(time, 0, 0, 1)
gl.Disable(GL_MULTISAMPLE_ARB)
gl.Color3f(1, 1, 1)
gl.Rectf(-0.25, -0.25, 0.25, 0.25)
glfw.SwapBuffers()
}
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity() // 重置当前矩阵
texture.Bind(gl.TEXTURE_2D)
var x_m, y_m, z_m, u_m, v_m float32
xtrans := -xpos
ztrans := -zpos
ytrans := -walkbias - 0.25
sceneroty := 360.0 - yrot
var numtriangles int
gl.Rotatef(lookupdown, 1.0, 0, 0)
gl.Rotatef(sceneroty, 0, 1.0, 0)
gl.Translatef(xtrans, ytrans, ztrans)
numtriangles = sector1.numtriangles
// Process Each Triangle
for loop_m := 0; loop_m < numtriangles; loop_m++ {
gl.Begin(gl.TRIANGLES)
gl.Normal3f(0.0, 0.0, 1.0)
x_m = sector1.triangles[loop_m].vertex[0].x
y_m = sector1.triangles[loop_m].vertex[0].y
z_m = sector1.triangles[loop_m].vertex[0].z
u_m = sector1.triangles[loop_m].vertex[0].u
v_m = sector1.triangles[loop_m].vertex[0].v
gl.TexCoord2f(u_m, v_m)
gl.Vertex3f(x_m, y_m, z_m)
x_m = sector1.triangles[loop_m].vertex[1].x
y_m = sector1.triangles[loop_m].vertex[1].y
z_m = sector1.triangles[loop_m].vertex[1].z
u_m = sector1.triangles[loop_m].vertex[1].u
v_m = sector1.triangles[loop_m].vertex[1].v
gl.TexCoord2f(u_m, v_m)
gl.Vertex3f(x_m, y_m, z_m)
x_m = sector1.triangles[loop_m].vertex[2].x
y_m = sector1.triangles[loop_m].vertex[2].y
z_m = sector1.triangles[loop_m].vertex[2].z
u_m = sector1.triangles[loop_m].vertex[2].u
v_m = sector1.triangles[loop_m].vertex[2].v
gl.TexCoord2f(u_m, v_m)
gl.Vertex3f(x_m, y_m, z_m)
gl.End()
}
}
// OpenGL draw function
func draw() {
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Enable(gl.BLEND)
gl.Enable(gl.POINT_SMOOTH)
gl.Enable(gl.LINE_SMOOTH)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.LoadIdentity()
gl.Begin(gl.LINES)
gl.Color3f(.2, .2, .2)
for i := range staticLines {
x := staticLines[i].GetAsSegment().A.X
y := staticLines[i].GetAsSegment().A.Y
gl.Vertex3f(float32(x), float32(y), 0)
x = staticLines[i].GetAsSegment().B.X
y = staticLines[i].GetAsSegment().B.Y
gl.Vertex3f(float32(x), float32(y), 0)
}
gl.End()
gl.Color4f(.3, .3, 1, .8)
// draw balls
for _, ball := range balls {
gl.PushMatrix()
pos := ball.Body.Position()
rot := ball.Body.Angle() * chipmunk.DegreeConst
gl.Translatef(float32(pos.X), float32(pos.Y), 0.0)
gl.Rotatef(float32(rot), 0, 0, 1)
drawCircle(float64(ballRadius), 60)
gl.PopMatrix()
}
}
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 drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
texture.Bind(gl.TEXTURE_2D)
for loop = 0; loop < num; loop++ {
gl.LoadIdentity() // 绘制每颗星星之前，重置模型观察矩阵
gl.Translatef(0.0, 0.0, zoom) // 深入屏幕里面
gl.Rotatef(tilt, 1.0, 0.0, 0.0) // 倾斜视角
gl.Rotatef(ztilt, 0.0, 0.0, 1.0) // 倾斜视角
gl.Rotatef(star[loop].angle, 0.0, 1.0, 0.0) // 旋转至当前所画星星的角度
gl.Translatef(star[loop].dist, 0.0, 0.0) // 沿X轴正向移动
gl.Rotatef(-star[loop].angle, 0.0, 1.0, 0.0) // 取消当前星星的角度
gl.Rotatef(-ztilt, 0.0, 0.0, 1.0) // 取消屏幕倾斜
gl.Rotatef(-tilt, 1.0, 0.0, 0.0) // 取消屏幕倾斜
if twinkle { // 启用闪烁效果
// 使用byte型数值指定一个颜色
gl.Color4ub(star[(num-loop)-1].r, star[(num-loop)-1].g, star[(num-loop)-1].b, 255)
gl.Begin(gl.QUADS) // 开始绘制纹理映射过的四边形
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() // 四边形绘制结束
}
gl.Rotatef(spin, 0.0, 0.0, 1.0) // 绕z轴旋转星星
// 使用byte型数值指定一个颜色
gl.Color4ub(star[loop].r, star[loop].g, star[loop].b, 255)
gl.Begin(gl.QUADS) // 开始绘制纹理映射过的四边形
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() // 四边形绘制结束
spin += 0.01 // 星星的公转
star[loop].angle += float32(loop) / num // 改变星星的自转角度
star[loop].dist -= 0.01 // 改变星星离中心的距离
if star[loop].dist < 0.0 { // 星星到达中心了么
star[loop].dist += 5 // 往外移5个单位
//fmt.Println(loop, star[loop].dist)
star[loop].r = uint8(rand.Int() % 256) // 赋一个新红色分量
star[loop].g = uint8(rand.Int() % 256) // 赋一个新绿色分量
star[loop].b = uint8(rand.Int() % 256) // 赋一个新蓝色分量
}
}
}
func drawBlock(loc Loc, b *Block) {
// Save current modelview matrix on to the stack
gl.PushMatrix()
// Move block
gl.Translatef(loc.X, loc.Y, loc.Z)
// Rotate block
gl.Rotatef(b.Pitch, 1, 0, 0)
gl.Rotatef(b.Yaw, 0, 1, 0)
gl.Rotatef(b.Roll, 0, 0, 1)
// Start specifying the vertices of quads.
gl.Begin(gl.QUADS)
for _, quad := range b.Quads {
gl.Color3fv(quad.Color)
for _, vertex := range quad.Vertices {
gl.Vertex3fv(b.Vertices[vertex])
}
}
gl.End()
// Restore old modelview matrix
gl.PopMatrix()
}
func renderSwitchBlocks(s *Switch) {
// TODO constant
v := SwitchSize / 2
x, y := float32(s.X+v), float32(s.Y+v)
gl.LoadIdentity()
gl.Translatef(x, y, 0)
if s.rotate != 0 {
gl.Rotatef(float32(s.rotate), 0, 0, 1)
}
bsf := float32(BlockSize - s.Z)
padding := float32(BlockPadding)
var b *Block
// Render block top left
b = g.level.blocks[s.line][s.col]
if !b.Rendered {
gl.PushMatrix()
gl.Translatef(-bsf-padding, -bsf-padding, 0)
renderBlock(b, bsf)
gl.PopMatrix()
b.Rendered = true
}
// Render block top right
b = g.level.blocks[s.line][s.col+1]
if !b.Rendered {
gl.PushMatrix()
gl.Translatef(padding, -bsf-padding, 0)
renderBlock(b, bsf)
gl.PopMatrix()
b.Rendered = true
}
// Render block bottom right
b = g.level.blocks[s.line+1][s.col+1]
if !b.Rendered {
gl.PushMatrix()
gl.Translatef(padding, padding, 0)
renderBlock(b, bsf)
gl.PopMatrix()
b.Rendered = true
}
// render block bottom left
b = g.level.blocks[s.line+1][s.col]
if !b.Rendered {
gl.PushMatrix()
gl.Translatef(-bsf-padding, padding, 0)
renderBlock(b, bsf)
gl.PopMatrix()
b.Rendered = true
}
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT) /// 清除屏幕及深度缓存
gl.LoadIdentity() /// 重置模型观察矩阵
gl.Translatef(-1.5, 0, -6) /// 左移 1.5 单位，并移入屏幕 6.0
gl.Rotatef(trisAngle, 0, 1, 0) ///以y为轴 参数:角度,X,Y,Z
gl.Begin(gl.TRIANGLES) /// 绘制三角形
gl.Color3f(1, 0, 0) /// 设置当前色为红色
gl.Vertex3f(0, 1, 0) ///上顶点
gl.Color3f(0, 1, 0) /// 设置当前色为绿色
gl.Vertex3f(-1, -1, 0) /// 左下
gl.Color3f(0, 0, 1) ///设置当前色为蓝色
gl.Vertex3f(1, -1, 0) ///右下
gl.End() ///三角形绘制结束,三角形将被填充。
//但是因为每个顶点有不同的颜色，因此看起来颜色从每个角喷出，并刚好在三角形的中心汇合，三种颜色相互混合。这就是平滑着色。
/// 要让对象绕自身的轴旋转，必须让对象的中心坐标总是(0.0f,0,0f,0,0f),因此这里的四边形是满屏跑的
gl.LoadIdentity() ///将当前点移到了屏幕中心，X坐标轴从左至右，Y坐标轴从下至上，Z坐标轴从里至外。
///OpenGL屏幕中心的坐标值是X和Y轴上的0.0f点。中心左面的坐标值是负值，右面是正值。移向屏幕顶端是正值，移向屏幕底端是负值。移入屏幕深处是负值，移出屏幕则是正值。
gl.Rotatef(quadAngle, 1, 0, 0) /// 以x为轴
gl.Translatef(1.5, 0, -6) ///以当前点为起始点移动?(是的)-6为距离
//gl.Translatef(3, 0, -6); ///右移3单位,看不见?(因为loadIdentity()置中了)
gl.Color3f(0.5, 0.5, 1.0) ///一次性将当前色设置为蓝色
/// @note 顺时针绘制的正方形意味着我们所看见的是四边形的背面
gl.Begin(gl.QUADS) ///绘制正方形
gl.Vertex3f(-1, 1, 0) /// 左上
gl.Vertex3f(1, 1, 0) /// 右上
gl.Vertex3f(1, -1, 0) /// 右下
gl.Vertex3f(-1, -1, 0) /// 左下
gl.End() ///正方形绘制结束
trisAngle += 0.2
quadAngle -= 0.15
glfw.SwapBuffers() ///必须交换显示区才能展现
}
func redraw() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
var viewport [4]int32
gl.GetIntegerv(gl.VIEWPORT, viewport[:4])
aspect := float64(viewport[2]) / float64(viewport[3])
glu.Perspective(60, aspect, 1, 100)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translatef(POV.X, POV.Y, POV.Z)
gl.Rotatef(POV.Pitch, 1, 0, 0)
gl.Rotatef(POV.Yaw, 0, 1, 0)
gl.Rotatef(POV.Roll, 0, 0, 1)
for x, row := range World {
for z, block := range row {
drawBlock(translateCoordinates(x, 0, z), block)
if x == CursorX && z == CursorZ {
drawCursor()
}
}
}
}
func main() {
err := initGL()
if err != nil {
log.Printf("InitGL: %v", err)
return
}
defer glfw.Terminate()
mb := createBuffer()
defer mb.Release()
// Perform the rendering.
var angle float32
for glfw.WindowParam(glfw.Opened) > 0 {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity()
gl.Translatef(0, 0, -6)
gl.Rotatef(angle, 1, 1, 1)
// Render a solid cube at half the scale.
gl.Scalef(0.2, 0.2, 0.2)
gl.Enable(gl.COLOR_MATERIAL)
gl.Enable(gl.POLYGON_OFFSET_FILL)
gl.PolygonMode(gl.FRONT_AND_BACK, gl.FILL)
mb.Render(gl.QUADS)
// Render wireframe cubes, with incremental size.
gl.Disable(gl.COLOR_MATERIAL)
gl.Disable(gl.POLYGON_OFFSET_FILL)
gl.PolygonMode(gl.FRONT_AND_BACK, gl.LINE)
for i := 0; i < 50; i++ {
scale := 0.004*float32(i) + 1.0
gl.Scalef(scale, scale, scale)
mb.Render(gl.QUADS)
}
angle += 0.5
glfw.SwapBuffers()
}
}
func drawBall(angle float32, ball_x float32, ball_y float32) {
gl.PushMatrix()
gl.Color3f(1, 1, 1)
gl.Translatef(ball_x, ball_y, 0.0)
gl.Begin(gl.LINE_LOOP)
for rad := 0.0; rad < 1.0; rad += 0.01 {
gl.Vertex2f(
float32(2.0*math.Cos(2.0*math.Pi*rad)),
float32(2.0*math.Sin(2.0*math.Pi*rad)+0.2))
}
gl.End()
gl.Rotatef(angle, 0.0, 0.0, 1.0)
gl.Begin(gl.LINE_STRIP)
gl.Vertex2f(0, 0)
gl.Vertex2f(2, 0)
gl.End()
gl.PopMatrix()
}
func drawBorderAtXY(x, y float32, reverse int) {
if x <= 80 || y <= 80 {
return
}
gl.PushMatrix()
gl.Translatef(x, y, 0)
if reverse == 1 {
gl.Rotatef(60, 0, 0, 1)
}
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.REPLACE)
borderTex.Bind(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 0)
gl.Vertex2i(-38, -38)
gl.TexCoord2f(0, 1)
gl.Vertex2i(-38, 38)
gl.TexCoord2f(1, 1)
gl.Vertex2i(38, 38)
gl.TexCoord2f(1, 0)
gl.Vertex2i(38, -38)
gl.End()
gl.PopMatrix()
}
func draw() { // 从这里开始进行所有的绘制
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT) // 清除屏幕和深度缓存
gl.LoadIdentity() // 重置当前的模型观察矩阵
gl.Translatef(-1.5, 0.0, -6.0) // 左移 1.5 单位，并移入屏幕 6.0
gl.Rotatef(rtri, 0.0, 1.0, 0.0) // 绕Y轴旋转三角形
gl.Begin(gl.TRIANGLES) // 绘制三角形
gl.Color3f(1.0, 0.0, 0.0) // 设置当前色为红色
gl.Vertex3f(0.0, 1.0, 0.0) // 三角形的上顶点 (前侧面)
gl.Color3f(0.0, 1.0, 0.0) // 设置当前色为绿色
gl.Vertex3f(-1.0, -1.0, 1.0) // 三角形的左下顶点 (前侧面)
gl.Color3f(0.0, 0.0, 1.0) // 设置当前色为蓝色
gl.Vertex3f(1.0, -1.0, 1.0) // 三角形的右下顶点 (前侧面)
gl.Color3f(1.0, 0.0, 0.0) // 设置当前色为红色
gl.Vertex3f(0.0, 1.0, 0.0) // 三角形的上顶点 (右侧面)
gl.Color3f(0.0, 0.0, 1.0) // 设置当前色为蓝色
gl.Vertex3f(1.0, -1.0, 1.0) // 三角形的左下顶点 (右侧面)
gl.Color3f(0.0, 1.0, 0.0) // 设置当前色为绿色
gl.Vertex3f(1.0, -1.0, -1.0) // 三角形的右下顶点 (右侧面)
gl.Color3f(1.0, 0.0, 0.0) // 设置当前色为红色
gl.Vertex3f(0.0, 1.0, 0.0) // 三角形的上顶点 (后侧面)
gl.Color3f(0.0, 0.0, 1.0) // 设置当前色为蓝色
gl.Vertex3f(1.0, -1.0, -1.0) // 三角形的左下顶点 (后侧面)
gl.Color3f(0.0, 1.0, 0.0) // 设置当前色为绿色
gl.Vertex3f(-1.0, -1.0, -1.0) // 三角形的右下顶点 (后侧面)
gl.Color3f(1.0, 0.0, 0.0) // 设置当前色为红色
gl.Vertex3f(0.0, 1.0, 0.0) // 三角形的上顶点 (左侧面)
gl.Color3f(0.0, 0.0, 1.0) // 设置当前色为蓝色
gl.Vertex3f(-1.0, -1.0, -1.0) // 三角形的左下顶点 (左侧面)
gl.Color3f(0.0, 1.0, 0.0) // 设置当前色为绿色
gl.Vertex3f(-1.0, -1.0, 1.0) // 三角形的右下顶点 (左侧面)
gl.End() // 三角形侧面绘制结束
gl.Begin(gl.QUADS) // 三角形底面绘制形
gl.Vertex3f(1.0, -1.0, -1.0) // 四边形的右上顶点 (底面)
gl.Vertex3f(-1.0, -1.0, -1.0) // 四边形的左上顶点 (底面)
gl.Vertex3f(-1.0, -1.0, 1.0) // 四边形的左下顶点 (底面)
gl.Vertex3f(1.0, -1.0, 1.0) // 四边形的右下顶点 (底面)
gl.End() // 三角形底面绘制结束
gl.LoadIdentity() // 重置当前的模型观察矩阵
gl.Translatef(1.5, 0.0, -7.0) // 右移1.5单位,并移入屏幕 6.0
gl.Rotatef(rquad, 1.0, 1.0, 1.0) // 绕X轴旋转四边形
gl.Begin(gl.QUADS) // 绘制正方形
gl.Color3f(1.0, 0.0, 0.0) // 一次性将当前色设置为红色
gl.Vertex3f(1.0, 1.0, -1.0) // 四边形的右上顶点 (顶面)
gl.Vertex3f(-1.0, 1.0, -1.0) // 四边形的左上顶点 (顶面)
gl.Vertex3f(-1.0, 1.0, 1.0) // 四边形的左下顶点 (顶面)
gl.Vertex3f(1.0, 1.0, 1.0) // 四边形的右下顶点 (顶面)
gl.Color3f(1.0, 0.5, 0.0) // 一次性将当前色设置为橙色
gl.Vertex3f(1.0, 1.0, 1.0) // 四边形的右上顶点 (前面)
gl.Vertex3f(-1.0, 1.0, 1.0) // 四边形的左上顶点 (前面)
gl.Vertex3f(-1.0, -1.0, 1.0) // 四边形的左下顶点 (前面)
gl.Vertex3f(1.0, -1.0, 1.0) // 四边形的右下顶点 (前面)
gl.Color3f(0.0, 0.0, 1.0) // 一次性将当前色设置为绿色
gl.Vertex3f(1.0, 1.0, -1.0) // 四边形的右上顶点 (右面)
gl.Vertex3f(1.0, 1.0, 1.0) // 四边形的左上顶点 (右面)
gl.Vertex3f(1.0, -1.0, 1.0) // 四边形的左下顶点 (右面)
gl.Vertex3f(1.0, -1.0, -1.0) // 四边形的右下顶点 (右面)
gl.Color3f(0.0, 1.0, 0.0) // 一次性将当前色设置为蓝色
gl.Vertex3f(-1.0, 1.0, -1.0) // 四边形的右上顶点 (后面)
gl.Vertex3f(1.0, 1.0, -1.0) // 四边形的左上顶点 (后面)
gl.Vertex3f(1.0, -1.0, -1.0) // 四边形的左下顶点 (后面)
gl.Vertex3f(-1.0, -1.0, -1.0) // 四边形的右下顶点 (后面)
gl.Color3f(1.0, 1.0, 0.0) // 一次性将当前色设置为黄色
gl.Vertex3f(-1.0, 1.0, 1.0) // 四边形的右上顶点 (左面)
gl.Vertex3f(-1.0, 1.0, -1.0) // 四边形的左上顶点 (左面)
gl.Vertex3f(-1.0, -1.0, -1.0) // 四边形的左下顶点 (左面)
gl.Vertex3f(-1.0, -1.0, 1.0) // 四边形的右下顶点 (左面)
gl.Color3f(1.0, 1.0, 1.0) // 一次性将当前色设置为白色
gl.Vertex3f(1.0, -1.0, -1.0) // 四边形的右上顶点 (底面)
gl.Vertex3f(-1.0, -1.0, -1.0) // 四边形的左上顶点 (底面)
gl.Vertex3f(-1.0, -1.0, 1.0) // 四边形的左下顶点 (底面)
gl.Vertex3f(1.0, -1.0, 1.0) // 四边形的右下顶点 (底面)
gl.End()
rtri += 0.2 // 增加三角形的旋转变量
rquad -= 0.15 // 减少四边形的旋转变量
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT) /// 清除屏幕及深度缓存
gl.LoadIdentity() /// 重置模型观察矩阵
gl.Translatef(0, 0, -5) /// 并移入屏幕 5.0
gl.Rotatef(rotation[0], 1, 0, 0) ///以x为轴旋转 参数:角度,X,Y,Z
gl.Rotatef(rotation[1], 0, 1, 0)
gl.Rotatef(rotation[2], 0, 0, 1)
rotation[0] += 0.3
rotation[1] += 0.2
rotation[2] += 0.4
/*
选择我们使用的纹理。如果您在您的场景中使用多个纹理，
应该使用来 glBindTexture(GL_TEXTURE_2D, texture[ 所使用纹理对应的数字 ]) 选择要绑定的纹理。
当想改变纹理时，应该绑定新的纹理。有一点值得指出的是，您不能在 glBegin() 和 glEnd() 之间绑定纹理，
必须在 glBegin() 之前或 glEnd() 之后绑定。注意在后面是如何使用 glBindTexture 来指定和绑定纹理的。
*/
textures[0].Bind(gl.TEXTURE_2D) ///选择纹理
/*
为了将纹理正确的映射到四边形上，必须将纹理的右上角映射到四边形的右上角，纹理的左上角映射到四边形的左上角，
纹理的右下角映射到四边形的右下角，纹理的左下角映射到四边形的左下角。
如果映射错误的话，图像显示时可能上下颠倒，侧向一边或者什么都不是。
glTexCoord2f 的第一个参数是X坐标。 0.0f 是纹理的左侧。 0.5f 是纹理的中点， 1.0f 是纹理的右侧。
glTexCoord2f 的第二个参数是Y坐标。 0.0f 是纹理的底部。 0.5f 是纹理的中点， 1.0f 是纹理的顶部。
所以纹理的左上坐标是 X：0.0f，Y：1.0f ，四边形的左上顶点是 X： -1.0f，Y：1.0f 。其余三点依此类推。
*/
gl.Begin(gl.QUADS) ///绘制正方形
gl.TexCoord2f(0, 0) ///前面
gl.Vertex3f(-1, -1, 1) ///左下
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, 1) ///右下
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, 1) ///右上
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, 1) ///左上
gl.TexCoord2d(1, 0) ///后面
gl.Vertex3f(-1, -1, -1) ///右下
gl.TexCoord2d(1, 1)
gl.Vertex3f(-1, 1, -1) ///右上
gl.TexCoord2d(0, 1)
gl.Vertex3f(1, 1, -1) ///左上
gl.TexCoord2d(0, 0)
gl.Vertex3f(1, -1, -1) //左下
gl.TexCoord2d(0, 1) ///上面
gl.Vertex3f(-1, 1, -1)
gl.TexCoord2d(0, 0)
gl.Vertex3f(-1, 1, 1)
gl.TexCoord2d(1, 0)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2d(1, 1)
gl.Vertex3f(1, 1, -1)
gl.TexCoord2d(1, 1) ///下面
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2d(0, 1)
gl.Vertex3f(1, -1, -1)
gl.TexCoord2d(0, 0)
gl.Vertex3f(1, -1, 1)
gl.TexCoord2d(1, 0)
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2d(1, 0) ///右面
gl.Vertex3f(1, -1, -1)
gl.TexCoord2d(1, 1)
gl.Vertex3f(1, 1, -1)
gl.TexCoord2d(0, 1)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2d(0, 0)
gl.Vertex3f(1, -1, 1)
gl.TexCoord2d(0, 0) ///左面
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2d(1, 0)
gl.Vertex3f(-1, -1, 1)
gl.TexCoord2d(1, 1)
gl.Vertex3f(-1, 1, 1)
gl.TexCoord2d(0, 1)
gl.Vertex3f(-1, 1, -1)
gl.End() ///正方形绘制结束
glfw.SwapBuffers() ///必须交换显示区才能展现
}
func renderHexMap() {
gl.Enable(gl.TEXTURE_2D)
gl.Enable(gl.BLEND)
gl.Disable(gl.DEPTH_TEST)
wallpaper.Bind(gl.TEXTURE_2D)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.REPLACE)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 0)
gl.Vertex2i(0, 0)
gl.TexCoord2f(0, 1)
gl.Vertex2i(0, 768)
gl.TexCoord2f(1, 1)
gl.Vertex2i(1024, 768)
gl.TexCoord2f(1, 0)
gl.Vertex2i(1024, 0)
gl.End()
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.DECAL)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.PushMatrix()
gl.Translatef(80, 80, 0)
for x := 0; x < 10; x++ {
maxy := 8
topy := 19
if x%2 == 1 {
maxy = 9
topy = 0
}
starty := 0
for y := starty; y < maxy; y++ {
if currExX > -1 && currExY > -1 && starRotate {
if y == currExY && x == currExX || y == currExY+1 && x == currExX || y == currExY-1 && x == currExX || currExX%2 == 0 && ((currExX == x-1 || currExX == x+1) && currExY == y-1 || (currExX == x-1 || currExX == x+1) && currExY == y) || currExX%2 == 1 && ((currExX == x-1 || currExX == x+1) && currExY == y || (currExX == x-1 || currExX == x+1) && currExY == y+1) {
continue
}
} else if timesToRotate > 0 {
// if y == currExY && x == currExX || currExX%2 == 0 && (x == currExX+1 && y == currExY || x == currExX+1 && y == currExY+1) || currExX%2 == 1 && (x == currExX+1 && y == currExY || x == currExX+1 && y == currExY-1) {
// continue
// }
found := false
for _, v := range selectedHex {
if y == v[1] && x == v[0] {
found = true
break
}
}
if found {
continue
}
}
found := false
for _, v := range currentMatches {
if scale > 0 && v[0] == x && v[1] == y || scale <= 0 && v[0] == x && v[1] >= y {
found = true
break
}
}
for _, v := range starMatches {
if starAlpha > 0 && v[0] == x && v[1] == y || starAlpha <= 0 && v[0] == x && v[1] >= y {
found = true
break
}
}
if found || len(currStarCenter) > 0 && currStarCenter[0] == x && currStarCenter[1] == y {
continue
}
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
drawHex(x*33, topy+y*38, hexMap[x][y], 1)
}
}
gl.PopMatrix()
if len(currentMatches) > 0 || len(starMatches) > 0 {
mouseLock = true
if len(currentMatches) > 0 && scale > 0 {
scale -= 0.1
for _, v := range currentMatches {
gl.PushMatrix()
topy := 19
if v[0]%2 == 1 {
topy = 0
}
gl.Translatef(float32(v[0]*33+102), float32(v[1]*38+topy+94), 0)
gl.Scalef(scale, scale, 1)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
drawHex(-22, -14, hexMap[v[0]][v[1]], 1)
gl.PopMatrix()
}
} else if len(starMatches) > 0 && starAlpha > 0 {
starAlpha -= 0.05
// starAlpha = 0.7
starScale += 0.05
// starScale = 1.4
gl.PushMatrix()
topy := 19
pm := 0
if currStarCenter[0]%2 == 1 {
topy = 0
pm = -1
}
gl.Translatef(float32(currStarCenter[0]*33+102), float32(currStarCenter[1]*38+topy+94), 0)
drawHex(-22, -14, 6, 1)
gl.PopMatrix()
gl.PushMatrix()
gl.Translatef(float32(currStarCenter[0]*33+102), float32(currStarCenter[1]*38+topy+94), 0)
gl.Scalef(starScale, starScale, 1)
drawHex(-22, -14-HEX_HEIGHT, hexMap[currStarCenter[0]][currStarCenter[1]-1], starAlpha)
drawHex(-22, -20+HEX_HEIGHT, hexMap[currStarCenter[0]][currStarCenter[1]+1], starAlpha)
drawHex(-52, -36, hexMap[currStarCenter[0]-1][currStarCenter[1]+pm], starAlpha)
drawHex(-52, -40+HEX_HEIGHT, hexMap[currStarCenter[0]-1][currStarCenter[1]+pm+1], starAlpha)
drawHex(8, -36, hexMap[currStarCenter[0]+1][currStarCenter[1]+pm], starAlpha)
drawHex(8, -40+HEX_HEIGHT, hexMap[currStarCenter[0]+1][currStarCenter[1]+pm+1], starAlpha)
gl.PopMatrix()
} else {
if fallticks == 0 {
animateFall = make([]*freefall, 0)
for x := 0; x < 10; x++ {
topy := 19
if x%2 == 1 {
topy = 0
}
fromy := -1
for _, v := range currentMatches {
if v[0] != x {
continue
}
if v[1] > fromy {
fromy = v[1]
}
}
for _, v := range starMatches {
if v[0] != x {
continue
}
if v[1] > fromy {
fromy = v[1]
}
}
if fromy == -1 {
continue
}
for y := fromy; y >= 0; y-- {
found := false
for _, v := range currentMatches {
if v[0] == x && v[1] == y {
found = true
break
}
}
for _, v := range starMatches {
if v[0] == x && v[1] == y {
found = true
break
}
}
if found {
continue
}
animateFall = append(animateFall, &freefall{x, y, getFallTargetY(x, y), math.Pow(float64(y), 2)/16 + 0.5})
gl.PushMatrix()
gl.Translatef(float32(x*33+102), float32(y*38+topy+94), 0)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
drawHex(-22, -14, hexMap[x][y], 1)
gl.PopMatrix()
}
}
fallticks++
} else {
stillFalling := 0
for _, v := range animateFall {
topy := 19
if v.x%2 == 1 {
topy = 0
}
newy := v.accel * math.Pow(float64(fallticks), 2) / 2
gl.PushMatrix()
gl.Translatef(float32(v.x*33+102), float32(math.Min(float64(v.y*38+topy+94)+newy, float64(v.targetY*38+topy+94))), 0)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
drawHex(-22, -14, hexMap[v.x][v.y], 1)
gl.PopMatrix()
if float64(v.y*38+topy+94)+newy < float64(v.targetY*38+topy+94) {
stillFalling++
}
}
fallticks++
if stillFalling == 0 {
starScale = 1
starAlpha = 0
removeHexAndGenNew(currentMatches)
makeStarAndGenNew(starMatches)
currentMatches = checkHexMap()
starMatches = checkHexStar()
currStarCenter = []int{}
scale = 1
fallticks = 0
mouseLock = false
fmt.Println("Mouse unlocked 1")
animateFall = nil
}
}
}
}
if currExX > -1 && currExY > -1 {
gl.PushMatrix()
topy := 19
if currExX%2 == 1 {
topy = 0
}
if starRotate {
timesToRotate = 0
gl.Translatef(float32(currExX*33+102), float32(currExY*38+topy+94), 0)
gl.Scalef(1.3, 1.3, 1)
gl.Rotatef(rotate, 0, 0, 1)
drawHex(-22, -14, 6, 1)
drawHex(-22, -14-HEX_HEIGHT, hexMap[currExX][currExY-1], 1)
drawHex(-22, -20+HEX_HEIGHT, hexMap[currExX][currExY+1], 1)
pm := 0
if currExX%2 == 1 {
pm = -1
}
drawHex(-52, -36, hexMap[currExX-1][currExY+pm], 1)
drawHex(-52, -40+HEX_HEIGHT, hexMap[currExX-1][currExY+pm+1], 1)
drawHex(8, -36, hexMap[currExX+1][currExY+pm], 1)
drawHex(8, -40+HEX_HEIGHT, hexMap[currExX+1][currExY+pm+1], 1)
} else {
// gl.Translatef(float32(currExX*33+HEX_WIDTH+80), float32(currExxY*38+topy+20+80), 0)
gl.Translatef(float32(prevSelectPos[0]), float32(prevSelectPos[1]), 0)
gl.Scalef(1.3, 1.3, 1)
gl.Rotatef(rotate, 0, 0, 1)
for _, v := range selectedHex {
switch v[2] {
case 1:
drawHex(-32, -34, hexMap[v[0]][v[1]], 1)
case 2:
drawHex(0, -17, hexMap[v[0]][v[1]], 1)
case 3:
drawHex(-32, 0, hexMap[v[0]][v[1]], 1)
case 4:
drawHex(-44, -19, hexMap[v[0]][v[1]], 1)
case 5:
drawHex(-12, -36, hexMap[v[0]][v[1]], 1)
case 6:
drawHex(-12, -2, hexMap[v[0]][v[1]], 1)
}
}
// if currExX%2 == 0 {
// gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
// drawHex(-12, -36, hexMap[currExX+1][currExY], 1)
// } else {
// gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
// drawHex(-12, -36, hexMap[currExX+1][currExY-1], 1)
// }
// gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
// drawHex(-44, -19, hexMap[currExX][currExY], 1)
// if currExX%2 == 0 {
// gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
// drawHex(-12, -2, hexMap[currExX+1][currExY+1], 1)
// } else {
// gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
// drawHex(-12, -2, hexMap[currExX+1][currExY], 1)
// }
}
gl.PopMatrix()
if !starRotate && rotate < 120 {
rotate += 15
// rotate = 15
} else if starRotate && rotate < 60 {
rotate += 6
} else {
if starRotate {
if currExX%2 == 0 {
hexMap[currExX][currExY-1], hexMap[currExX+1][currExY], hexMap[currExX+1][currExY+1], hexMap[currExX][currExY+1], hexMap[currExX-1][currExY+1], hexMap[currExX-1][currExY] = hexMap[currExX-1][currExY], hexMap[currExX][currExY-1], hexMap[currExX+1][currExY], hexMap[currExX+1][currExY+1], hexMap[currExX][currExY+1], hexMap[currExX-1][currExY+1]
} else {
hexMap[currExX][currExY-1], hexMap[currExX+1][currExY-1], hexMap[currExX+1][currExY], hexMap[currExX][currExY+1], hexMap[currExX-1][currExY], hexMap[currExX-1][currExY-1] = hexMap[currExX-1][currExY-1], hexMap[currExX][currExY-1], hexMap[currExX+1][currExY-1], hexMap[currExX+1][currExY], hexMap[currExX][currExY+1], hexMap[currExX-1][currExY]
}
} else {
v2 := make([][]int, 3)
for _, v := range selectedHex {
idx := 0
switch v[2] {
case 1, 4:
idx = 0
case 2, 5:
idx = 1
case 3, 6:
idx = 2
}
v2[idx] = []int{v[0], v[1]}
fmt.Println(idx, v[0], v[1])
}
hexMap[v2[0][0]][v2[0][1]], hexMap[v2[1][0]][v2[1][1]], hexMap[v2[2][0]][v2[2][1]] = hexMap[v2[2][0]][v2[2][1]], hexMap[v2[0][0]][v2[0][1]], hexMap[v2[1][0]][v2[1][1]]
}
starMatches = checkHexStar()
if len(starMatches) > 6 {
fmt.Println(starMatches)
}
if len(starMatches) >= 6 {
timesToRotate = 0
rotate = 0
currExX = -1
currExY = -1
starScale = 1
starAlpha = 1
starRotate = false
currStarCenter = getStarCenter(starMatches)
hexMap[currStarCenter[0]][currStarCenter[1]] = 6
// makeStarAndGenNew(starMatches)
} else {
matches := checkHexMap()
if len(matches) > 0 {
currentMatches = matches
scale = 1
currExX = -1
currExY = -1
rotate = 0
timesToRotate = 0
starRotate = false
} else {
if timesToRotate == 0 {
currExX = -1
currExY = -1
rotate = 0
timesToRotate = 0
starRotate = false
mouseLock = false
fmt.Println("Mouse unlocked 3")
}
rotate = 0
timesToRotate--
}
}
}
}
if !mouseLock {
prevSelectPos = calcClosestCenter(posX, posY)
drawBorderAtXY(float32(prevSelectPos[0]), float32(prevSelectPos[1]), prevSelectPos[2])
}
gl.Flush()
gl.Disable(gl.TEXTURE_2D)
gl.Disable(gl.BLEND)
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity()
gl.Translatef(0, 0, z)
gl.Rotatef(rotation[0], 1, 0, 0)
gl.Rotatef(rotation[1], 0, 1, 0)
rotation[0] += speed[0]
rotation[1] += speed[1]
textures[filter].Bind(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
// Front Face
gl.Normal3f(0, 0, 1) // Normal Pointing Towards Viewer
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, 1) // Point 1 (Front)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, 1) // Point 2 (Front)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, 1) // Point 3 (Front)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, 1) // Point 4 (Front)
// Back Face
gl.Normal3f(0, 0, -1) // Normal Pointing Away From Viewer
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, -1) // Point 1 (Back)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, -1) // Point 2 (Back)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, -1) // Point 3 (Back)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, -1) // Point 4 (Back)
// Top Face
gl.Normal3f(0, 1, 0) // Normal Pointing Up
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1) // Point 1 (Top)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, 1, 1) // Point 2 (Top)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, 1, 1) // Point 3 (Top)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1) // Point 4 (Top)
// Bottom Face
gl.Normal3f(0, -1, 0) // Normal Pointing Down
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, -1, -1) // Point 1 (Bottom)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, -1, -1) // Point 2 (Bottom)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1) // Point 3 (Bottom)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1) // Point 4 (Bottom)
// Right face
gl.Normal3f(1, 0, 0) // Normal Pointing Right
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, -1) // Point 1 (Right)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1) // Point 2 (Right)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, 1) // Point 3 (Right)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1) // Point 4 (Right)
// Left Face
gl.Normal3f(-1, 0, 0) // Normal Pointing Left
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, -1) // Point 1 (Left)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1) // Point 2 (Left)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, 1) // Point 3 (Left)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1)
gl.End()
glfw.SwapBuffers()
}
func main() {
if err := glfw.Init(); err != nil {
log.Fatal(err.Error())
}
if err := glfw.OpenWindow(800, 600, 8, 8, 8, 8, 32, 0, glfw.Windowed); err != nil {
glfw.Terminate()
log.Fatal(err.Error())
}
glfw.SetWindowTitle("Landscapes")
glfw.SetSwapInterval(1)
m := GenerateMap(160, 160, 16)
m.BuildVertices()
gl.Enable(gl.LIGHT0)
gl.Enable(gl.LIGHTING)
gl.Lightfv(gl.LIGHT0, gl.POSITION, []float32{0, 1, 0.2, 0})
gl.Lightfv(gl.LIGHT0, gl.AMBIENT, []float32{0.0, 0.0, 0.0, 1})
gl.Lightfv(gl.LIGHT0, gl.DIFFUSE, []float32{0.75, 0.75, 0.75, 1})
gl.Lightfv(gl.LIGHT0, gl.SPECULAR, []float32{1, 1, 1, 1})
gl.ShadeModel(gl.SMOOTH)
gl.ClearColor(0.1, 0.05, 0.0, 1.0)
far := 4096.0
fov := 60.0
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
glu.Perspective(fov, 800.0/600, 1.0, far)
gl.MatrixMode(gl.MODELVIEW)
rot := float32(0.0)
for glfw.WindowParam(glfw.Opened) == 1 {
rot += 0.125
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity()
gl.Enable(gl.DEPTH_TEST)
gl.DepthFunc(gl.LEQUAL)
cx := float32(m.width*m.gridSize) * 0.5
cy := float32(m.maxHeight) * 0.15
cz := float32(m.depth*m.gridSize) * 0.5
gl.Translatef(0, 0, -2000)
gl.Rotatef(30, 1, 0, 0)
gl.Rotatef(rot, 0, 1, 0)
gl.Translatef(-cx, -cy, -cz)
m.Draw()
glfw.SwapBuffers()
}
glfw.Terminate()
}
func main() {
var err error
if err = glfw.Init(); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
defer glfw.Terminate()
w, h := 1980, 1080
// w, h := 1280, 768
if err = glfw.OpenWindow(w, h, 8, 8, 8, 16, 0, 32, glfw.Fullscreen); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
defer glfw.CloseWindow()
glfw.SetSwapInterval(1)
glfw.SetWindowTitle("Debris")
quadric = glu.NewQuadric()
gl.Enable(gl.CULL_FACE)
gl.Enable(gl.DEPTH_TEST)
gl.DepthFunc(gl.LEQUAL)
gl.Enable(gl.NORMALIZE)
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.ShadeModel(gl.SMOOTH)
gl.Enable(gl.LIGHTING)
var (
ambient = []float32{0.1, 0.3, 0.6, 1}
diffuse = []float32{1, 1, 0.5, 1}
specular = []float32{0.4, 0.4, 0.4, 1}
light_position = []float32{1, 0, 0, 0}
// mat_specular []float32 = []float32{1, 1, 0.5, 1}
mat_specular = []float32{1, 1, 0.75, 1}
mat_shininess = float32(120)
// light_position []float32 = []float32{0.0, 0.0, 1.0, 0.0}
)
const (
fov = 1.1 // degrees
znear = 145
zfar = 155
camera_z_offset = -150
camera_x_rotation = 0 // degrees
// camera_x_rotation = 20 // degrees
starfield_fov = 45
faces = 1000
earth_radius = 1
)
gl.Lightfv(gl.LIGHT1, gl.AMBIENT, ambient)
gl.Lightfv(gl.LIGHT1, gl.DIFFUSE, diffuse)
gl.Lightfv(gl.LIGHT1, gl.SPECULAR, specular)
gl.Lightfv(gl.LIGHT1, gl.POSITION, light_position)
gl.Enable(gl.LIGHT1)
mat_emission := []float32{0, 0, 0.1, 1}
gl.Materialfv(gl.FRONT_AND_BACK, gl.EMISSION, mat_emission)
gl.Materialfv(gl.FRONT_AND_BACK, gl.SPECULAR, mat_specular)
gl.Materialf(gl.FRONT_AND_BACK, gl.SHININESS, mat_shininess)
gl.ClearColor(0.02, 0.02, 0.02, 1)
gl.ClearDepth(1)
gl.ClearStencil(0)
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
b := createBuffer()
planetoids := []*Planetoid{}
for i := 0; i < 1000; i++ {
p := &Planetoid{
apogee: 1.2 + rand.Float64()*0.7,
perigee: 1.5,
// inclination: 45,
inclination: rand.Float64()*20 - 10,
// inclination: 0,
phase0: rand.Float64() * 360,
rising_node: rand.Float64() * 10,
phase: 0,
// radius: rand.Float32()*0.05 + 0.01, //float32(r),
radius: rand.Float32()*0.0125 + 0.005, //float32(r),
// quadric: glu.NewQuadric(),
circle: b,
}
planetoids = append(planetoids, p)
}
// Initial projection matrix:
var aspect float64
glfw.SetWindowSizeCallback(func(w, h int) {
gl.Viewport(0, 0, w, h)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
aspect = float64(w) / float64(h)
glu.Perspective(fov, aspect, znear, zfar)
})
d := float64(0)
wireframe := false
atmosphere := false
polar := false
rotating := false
front := false
earth := true
cone := true
shadowing := true
tilt := false
running := true
glfw.SetKeyCallback(func(key, state int) {
if state != glfw.KeyPress {
// Don't act on key coming up
return
}
switch key {
case 'A':
atmosphere = !atmosphere
case 'C':
cone = !cone
case 'E':
earth = !earth
case 'R':
rotating = !rotating
case 'F':
front = !front
if front {
gl.FrontFace(gl.CW)
} else {
gl.FrontFace(gl.CCW)
}
case 'S':
shadowing = !shadowing
case 'T':
tilt = !tilt
case 'W':
wireframe = !wireframe
method := gl.GLenum(gl.FILL)
if wireframe {
method = gl.LINE
}
gl.PolygonMode(gl.FRONT_AND_BACK, method)
case glfw.KeyF2:
println("Screenshot captured")
// glh.CaptureToPng("screenshot.png")
w, h := glh.GetViewportWH()
im := image.NewRGBA(image.Rect(0, 0, w, h))
glh.ClearAlpha(1)
gl.Flush()
glh.CaptureRGBA(im)
go func() {
fd, err := os.Create("screenshot.png")
if err != nil {
panic("Unable to open file")
}
defer fd.Close()
png.Encode(fd, im)
}()
case 'Q', glfw.KeyEsc:
running = !running
case glfw.KeySpace:
polar = !polar
}
})
_ = rand.Float64
stars := glh.NewMeshBuffer(
glh.RenderArrays,
glh.NewPositionAttr(3, gl.DOUBLE, gl.STATIC_DRAW),
glh.NewColorAttr(3, gl.DOUBLE, gl.STATIC_DRAW))
const Nstars = 50000
points := make([]float64, 3*Nstars)
colors := make([]float64, 3*Nstars)
for i := 0; i < Nstars; i++ {
const R = 1
phi := rand.Float64() * 2 * math.Pi
z := R * (2*rand.Float64() - 1)
theta := math.Asin(z / R)
points[i*3+0] = R * math.Cos(theta) * math.Cos(phi)
points[i*3+1] = R * math.Cos(theta) * math.Sin(phi)
points[i*3+2] = z
const r = 0.8
v := rand.Float64()*r + (1 - r)
colors[i*3+0] = v
colors[i*3+1] = v
colors[i*3+2] = v
}
stars.Add(points, colors)
render_stars := func() {
glh.With(glh.Attrib{gl.DEPTH_BUFFER_BIT | gl.ENABLE_BIT}, func() {
gl.Disable(gl.LIGHTING)
gl.PointSize(1)
gl.Color4f(1, 1, 1, 1)
gl.Disable(gl.DEPTH_TEST)
gl.DepthMask(false)
stars.Render(gl.POINTS)
})
}
render_scene := func() {
// Update light position (sensitive to current modelview matrix)
gl.Lightfv(gl.LIGHT1, gl.POSITION, light_position)
gl.Lightfv(gl.LIGHT2, gl.POSITION, light_position)
if earth {
Sphere(earth_radius, faces)
}
unlit_points := glh.Compound(glh.Disable(gl.LIGHTING), glh.Primitive{gl.POINTS})
glh.With(unlit_points, func() {
gl.Vertex3d(1, 0, 0)
})
for _, p := range planetoids {
const dt = 0.1 // TODO: Frame update
p.Render(dt)
}
glh.With(glh.Disable(gl.LIGHTING), func() {
// Atmosphere
gl.Color4f(0.25, 0.25, 1, 0.1)
if atmosphere && earth {
Sphere(earth_radius*1.025, 100)
}
gl.PointSize(10)
glh.With(glh.Primitive{gl.POINTS}, func() {
gl.Color4f(1.75, 0.75, 0.75, 1)
gl.Vertex3d(-1.04, 0, 0)
})
})
}
render_shadow_volume := func() {
glh.With(glh.Attrib{
gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.ENABLE_BIT |
gl.POLYGON_BIT | gl.STENCIL_BUFFER_BIT,
}, func() {
gl.Disable(gl.LIGHTING)
if shadowing {
// gl.Disable(gl.DEPTH_TEST)
gl.DepthMask(false)
gl.DepthFunc(gl.LEQUAL)
gl.Enable(gl.STENCIL_TEST)
gl.ColorMask(false, false, false, false)
gl.StencilFunc(gl.ALWAYS, 1, 0xffffffff)
}
shadow_volume := func() {
const sv_length = 2
const sv_granularity = 100
const sv_radius = earth_radius * 1.001
// Shadow cone
glh.With(glh.Matrix{gl.MODELVIEW}, func() {
gl.Rotatef(90, 1, 0, 0)
gl.Rotatef(90, 0, -1, 0)
gl.Color4f(0.5, 0.5, 0.5, 1)
glu.Cylinder(quadric, sv_radius, sv_radius*1.05,
sv_length, sv_granularity, 1)
glu.Disk(quadric, 0, sv_radius, sv_granularity, 1)
glh.With(glh.Matrix{gl.MODELVIEW}, func() {
gl.Translated(0, 0, sv_length)
glu.Disk(quadric, 0, sv_radius*1.05, sv_granularity, 1)
})
})
for _, p := range planetoids {
p.RenderShadowVolume()
}
}
if cone {
gl.FrontFace(gl.CCW)
gl.StencilOp(gl.KEEP, gl.KEEP, gl.INCR)
shadow_volume()
gl.FrontFace(gl.CW)
gl.StencilOp(gl.KEEP, gl.KEEP, gl.DECR)
shadow_volume()
}
if shadowing {
gl.StencilFunc(gl.NOTEQUAL, 0, 0xffffffff)
gl.StencilOp(gl.KEEP, gl.KEEP, gl.KEEP)
gl.ColorMask(true, true, true, true)
// gl.Disable(gl.STENCIL_TEST)
gl.Disable(gl.DEPTH_TEST)
gl.FrontFace(gl.CCW)
// gl.Color4f(1, 0, 0, 0.75)
gl.Color4f(0, 0, 0, 0.75)
// gl.Color4f(1, 1, 1, 0.75)
gl.LoadIdentity()
gl.Translated(0, 0, camera_z_offset)
// TODO: Figure out why this doesn't draw over the whole screen
glh.With(glh.Disable(gl.LIGHTING), func() {
glh.DrawQuadd(-10, -10, 20, 20)
})
// gl.FrontFace(gl.CW)
// gl.Enable(gl.LIGHTING)
// gl.Disable(gl.LIGHT1)
// render_scene()
// gl.Enable(gl.LIGHT1)
}
})
}
_ = render_stars
for running {
running = glfw.WindowParam(glfw.Opened) == 1
glfw.SwapBuffers()
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.STENCIL_BUFFER_BIT)
rotation := func() {
if tilt {
gl.Rotated(20, 1, 0, 0)
}
if polar {
gl.Rotated(90, 1, 0, 0)
}
gl.Rotated(d, 0, -1, 0)
}
// Star field
glh.With(glh.Matrix{gl.PROJECTION}, func() {
gl.LoadIdentity()
glu.Perspective(starfield_fov, aspect, 0, 1)
glh.With(glh.Matrix{gl.MODELVIEW}, func() {
gl.LoadIdentity()
rotation()
render_stars()
})
})
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translated(0, 0, camera_z_offset)
rotation()
if rotating {
d += 0.2
}
_ = render_scene
render_scene()
_ = render_shadow_volume
render_shadow_volume()
}
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity()
gl.Translatef(0, 0, -5)
gl.Rotatef(rotation[0], 1, 0, 0)
gl.Rotatef(rotation[1], 0, 1, 0)
gl.Rotatef(rotation[2], 0, 0, 1)
rotation[0] += 0.3
rotation[1] += 0.2
rotation[2] += 0.4
textures[0].Bind(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
// Front Face
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, 1) // Bottom Left Of The Texture and Quad
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, 1) // Bottom Right Of The Texture and Quad
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, 1) // Top Right Of The Texture and Quad
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, 1) // Top Left Of The Texture and Quad
// Back Face
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, -1) // Bottom Right Of The Texture and Quad
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, -1) // Top Right Of The Texture and Quad
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, -1) // Top Left Of The Texture and Quad
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, -1) // Bottom Left Of The Texture and Quad
// Top Face
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1) // Top Left Of The Texture and Quad
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, 1, 1) // Bottom Left Of The Texture and Quad
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, 1, 1) // Bottom Right Of The Texture and Quad
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1) // Top Right Of The Texture and Quad
// Bottom Face
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, -1, -1) // Top Right Of The Texture and Quad
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, -1, -1) // Top Left Of The Texture and Quad
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1) // Bottom Left Of The Texture and Quad
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1) // Bottom Right Of The Texture and Quad
// Right face
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, -1) // Bottom Right Of The Texture and Quad
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1) // Top Right Of The Texture and Quad
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, 1) // Top Left Of The Texture and Quad
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1) // Bottom Left Of The Texture and Quad
// Left Face
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, -1) // Bottom Left Of The Texture and Quad
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1) // Bottom Right Of The Texture and Quad
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, 1) // Top Right Of The Texture and Quad
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1) // Top Left Of The Texture and Quad
gl.End()
glfw.SwapBuffers()
}
func (r *AnimateRotate) AnimateAndExecute() {
if len(r.SelectedHex) == 0 {
return
}
gl.PushMatrix()
var p Point
for _, hex := range r.SelectedHex {
p.X += hexMap2.GetCenter(hex.Pos.X, hex.Pos.Y).X
p.Y += hexMap2.GetCenter(hex.Pos.X, hex.Pos.Y).Y
}
p.X /= 3
p.Y /= 3
x, y := p.WithOffset()
gl.Translatef(float32(x), float32(y), 0)
if r.PauseTicks == 0 {
gl.Scalef(1.3, 1.3, 1)
gl.Rotatef(r.RotateAngle, 0, 0, 1)
} else {
r.PauseTicks--
}
for _, hex := range r.SelectedHex {
gl.PushMatrix()
x2, y2 := hexMap2.GetTopLeft(hex.Pos.X, hex.Pos.Y).WithOffset()
gl.Translatef(float32(x2-x), float32(y2-y), 0)
hex.Hex.Render(1, false)
gl.PopMatrix()
}
gl.PopMatrix()
if r.PauseTicks > 0 {
return
}
if r.RotateAngle < 120 {
r.RotateAngle += 20
} else {
fmt.Println(r.SelectedHex[0].Hex, r.SelectedHex[1].Hex, r.SelectedHex[2].Hex)
hexMap2[r.SelectedHex[0].Pos.X][r.SelectedHex[0].Pos.Y], hexMap2[r.SelectedHex[1].Pos.X][r.SelectedHex[1].Pos.Y], hexMap2[r.SelectedHex[2].Pos.X][r.SelectedHex[2].Pos.Y] = hexMap2[r.SelectedHex[2].Pos.X][r.SelectedHex[2].Pos.Y], hexMap2[r.SelectedHex[0].Pos.X][r.SelectedHex[0].Pos.Y], hexMap2[r.SelectedHex[1].Pos.X][r.SelectedHex[1].Pos.Y]
r.SelectedHex[0].Hex, r.SelectedHex[1].Hex, r.SelectedHex[2].Hex = r.SelectedHex[2].Hex, r.SelectedHex[0].Hex, r.SelectedHex[1].Hex
collide := hexMap2.CheckCollision()
if r.TimesToRotate == 0 || collide {
for _, hex := range r.SelectedHex {
if hex.Hex.State == StateRotating {
hex.Hex.State = StateNormal
}
}
r.SelectedHex = nil
r.SelectedHex = make([]SelectedHex, 0)
if collide {
hexShrink.InitAnimation()
if r.postHook != nil {
hexShrink.postHook = r.postHook
}
} else {
if r.postHook != nil {
r.postHook()
}
}
} else {
r.TimesToRotate--
r.RotateAngle = 0
r.PauseTicks = 5
}
}
}
func main() {
flag.Parse()
loadMeshInfo()
err := initGL()
if err != nil {
log.Printf("InitGL: %v", err)
return
}
program, shaderInfo, err := loadShaders(gl.Program(0), nil)
if err != nil {
panic(err)
}
_ = program
defer glfw.Terminate()
mb := createBuffer()
defer mb.Release()
// Perform the rendering.
var angle float32
reload := time.Tick(time.Duration(300 * time.Millisecond))
for glfw.WindowParam(glfw.Opened) > 0 {
select {
case <-reload:
oldInfo := shaderInfo
program, shaderInfo, err = loadShaders(program, shaderInfo)
if err != nil && lastErr == nil {
lastErr = err
println("Error loading shaders. Using old code.", lastErr)
} else if err == nil && oldInfo != shaderInfo {
lastErr = nil
println("new shader code loaded")
}
default:
// do nothing here
}
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity()
gl.Translatef(0, 0, -zoom)
if angle > 0 {
gl.Rotatef(angle, rotVet[0], rotVet[1], rotVet[2])
}
program.Use()
gl.Enable(gl.COLOR_MATERIAL)
gl.Enable(gl.POLYGON_OFFSET_FILL)
gl.PolygonMode(gl.FRONT_AND_BACK, gl.FILL)
mb.Render(gl.TRIANGLES)
if rotVet[0]+rotVet[1]+rotVet[2] != 0 {
// only increment the angle if at least one of the rotate axis
// is enabled
angle += 0.5
} else if angle != 0 {
angle = 0
}
glfw.SwapBuffers()
}
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT) //清除屏幕和深度缓存
gl.LoadIdentity() //重置当前的模型观察矩阵
gl.Translatef(0, 0, z) //移入/移出屏幕 z 个单位
gl.Rotatef(rotation[0], 1, 0, 0) //绕X轴旋转
gl.Rotatef(rotation[1], 0, 1, 0) //绕Y轴旋转
rotation[0] += speed[0]
rotation[1] += speed[1]
textures[filter].Bind(gl.TEXTURE_2D) //绑定的纹理
/*
Normal就是法线的意思，所谓法线是指经过面(多边形）上的一点且垂直于这个面(多边形)的直线。
使用光源的时候必须指定一条法线。法线告诉OpenGL这个多边形的朝向，并指明多边形的正面和背面。
如果没有指定法线，什么怪事情都可能发生：不该照亮的面被照亮了，多边形的背面也被照亮....。对了，法线应该指向多边形的外侧。
看着木箱的前面您会注意到法线与Z轴正向同向。这意味着法线正指向观察者－您自己。这正是我们所希望的。
对于木箱的背面，也正如我们所要的，法线背对着观察者。
如果立方体沿着X或Y轴转个180度的话，前侧面的法线仍然朝着观察者，背面的法线也还是背对着观察者。
换句话说，不管是哪个面，只要它朝着观察者这个面的法线就指向观察者。由于光源紧邻观察者，任何时候法线对着观察者时，这个面就会被照亮。
并且法线越朝着光源，就显得越亮一些。如果您把观察点放到立方体内部，你就会法线里面一片漆黑。因为法线是向外指的。
如果立方体内部没有光源的话，当然是一片漆黑。
*/
gl.Begin(gl.QUADS)
// Front Face 前面
gl.Normal3f(0, 0, 1) // Normal Pointing Towards Viewer 法线指向观察者
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, 1) // Point 1 (Front)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, 1) // Point 2 (Front)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, 1) // Point 3 (Front)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, 1) // Point 4 (Front)
// Back Face 后面
gl.Normal3f(0, 0, -1) // Normal Pointing Away From Viewer 法线背向观察者
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, -1) // Point 1 (Back)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, -1) // Point 2 (Back)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, -1) // Point 3 (Back)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, -1) // Point 4 (Back)
// Top Face 顶面
gl.Normal3f(0, 1, 0) // Normal Pointing Up 法线向上
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1) // Point 1 (Top)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, 1, 1) // Point 2 (Top)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, 1, 1) // Point 3 (Top)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1) // Point 4 (Top)
// Bottom Face 底面
gl.Normal3f(0, -1, 0) // Normal Pointing Down 法线朝下
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, -1, -1) // Point 1 (Bottom)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, -1, -1) // Point 2 (Bottom)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1) // Point 3 (Bottom)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1) // Point 4 (Bottom)
// Right face 右面
gl.Normal3f(1, 0, 0) // Normal Pointing Right 法线朝右
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, -1) // Point 1 (Right)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1) // Point 2 (Right)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, 1) // Point 3 (Right)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1) // Point 4 (Right)
// Left Face 左面
gl.Normal3f(-1, 0, 0) // Normal Pointing Left 法线朝左
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, -1) // Point 1 (Left)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1) // Point 2 (Left)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, 1) // Point 3 (Left)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1)
gl.End()
glfw.SwapBuffers()
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translatef(0, 0, -3.0)
gl.Rotatef(rotx, 1, 0, 0)
gl.Rotatef(roty, 0, 1, 0)
rotx += 0.5
roty += 0.5
texture.Bind(gl.TEXTURE_2D)
gl.Color4f(1, 1, 1, 1)
gl.Begin(gl.QUADS)
gl.Normal3f(0, 0, 1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, 1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, 1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, 1)
gl.Normal3f(0, 0, -1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, -1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, -1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, -1)
gl.Normal3f(0, 1, 0)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, 1, 1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1)
gl.Normal3f(0, -1, 0)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, -1, -1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1)
gl.Normal3f(1, 0, 0)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, -1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1)
gl.Normal3f(-1, 0, 0)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, 1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1)
gl.End()
}