func (self *Picker) DrawPlayerItems(t int64) {
gl.PushMatrix()
gl.LoadIdentity()
for i := 0; i < 5; i++ {
item := ThePlayer.equippedItems[i]
if item != ITEM_NONE {
angle := -(float64(i) + 1.5) * math.Pi / 4
gl.LoadIdentity()
x := self.x - self.actionItemRadius*float32(math.Sin(angle))
y := self.y + self.actionItemRadius*float32(math.Cos(angle))
gl.Translatef(x, y, 0)
gl.Rotatef(360*float32(math.Sin(float64(t)/1e10+float64(i))), 1.0, 0.0, 0.0)
gl.Rotatef(360*float32(math.Cos(float64(t)/1e10+float64(i))), 0.0, 1.0, 0.0)
gl.Rotatef(360*float32(math.Sin(float64(t)/1e10+float64(i))), 0.0, 0.0, 1.0)
gl.Scalef(blockscale, blockscale, blockscale)
gVertexBuffer.Reset()
TerrainCube(gVertexBuffer, 0, 0, 0, [18]uint16{}, item, FACE_NONE)
gVertexBuffer.RenderDirect(false)
gl.LoadIdentity()
gl.Translatef(x-17*PIXEL_SCALE, y-19*PIXEL_SCALE, 20)
consoleFont.Print(fmt.Sprintf("%d", ThePlayer.inventory[item]))
}
}
gl.PopMatrix()
}
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 (self *Console) Draw(t int64) {
gl.MatrixMode(gl.MODELVIEW)
gl.PushMatrix()
gl.LoadIdentity()
gl.Disable(gl.DEPTH_TEST)
gl.Disable(gl.LIGHTING)
gl.Disable(gl.LIGHT0)
gl.Disable(gl.LIGHT1)
h := float32(consoleFont.height) * PIXEL_SCALE
margin := float32(3.0) * PIXEL_SCALE
consoleHeight := 3 * h
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Color4ub(0, 0, 0, 208)
gl.Begin(gl.QUADS)
gl.Vertex2f(float32(viewport.lplane), float32(viewport.bplane)+consoleHeight+margin*2) // Bottom Left Of The Texture and Quad
gl.Vertex2f(float32(viewport.rplane), float32(viewport.bplane)+consoleHeight+margin*2) // Bottom Right Of The Texture and Quad
gl.Vertex2f(float32(viewport.rplane), float32(viewport.bplane)) // Top Right Of The Texture and Quad
gl.Vertex2f(float32(viewport.lplane), float32(viewport.bplane)) // Top Left Of The Texture and Quad
gl.End()
gl.Translatef(float32(viewport.lplane)+margin, float32(viewport.bplane)+consoleHeight+margin-h, 0)
consoleFont.Print(fmt.Sprintf("FPS: %5.2f V: %d (%d) CH: %d M: %d", self.fps, self.vertices, self.culledVertices, len(TheWorld.chunks), len(TheWorld.mobs)))
gl.LoadIdentity()
gl.Translatef(float32(viewport.lplane)+margin, float32(viewport.bplane)+consoleHeight+margin-2*h, 0)
consoleFont.Print(fmt.Sprintf("X: %5.2f Y: %4.2f Z: %5.2f H: %5.2f (%s) D: %0.1f (%d)", ThePlayer.position[XAXIS], ThePlayer.position[YAXIS], ThePlayer.position[ZAXIS], ThePlayer.heading, HeadingToCompass(ThePlayer.heading), ThePlayer.distanceTravelled, ThePlayer.distanceFromStart))
gl.LoadIdentity()
gl.Translatef(float32(viewport.lplane)+margin, float32(viewport.bplane)+consoleHeight+margin-3*h, 0)
numgc := uint32(0)
avggc := float64(0)
var last3 [3]float64
if self.mem.NumGC > 3 {
numgc = self.mem.NumGC
avggc = float64(self.mem.PauseTotalNs) / float64(self.mem.NumGC) / 1e6
index := int(numgc) - 1
if index > 255 {
index = 255
}
last3[0] = float64(self.mem.PauseNs[index]) / 1e6
last3[1] = float64(self.mem.PauseNs[index-1]) / 1e6
last3[2] = float64(self.mem.PauseNs[index-2]) / 1e6
}
consoleFont.Print(fmt.Sprintf("Mem: %.1f/%.1f GC: %.1fms [%d: %.1f, %.1f, %.1f] ChGen: %.1fms | Sc: %.1f TOD: %.1f", float64(self.mem.Alloc)/(1024*1024), float64(self.mem.Sys)/(1024*1024), avggc, numgc, last3[0], last3[1], last3[2], float64(self.chunkGenerationTime)/1e6, viewport.scale, timeOfDay))
gl.PopMatrix()
}
func main() {
var err error
if err = glfw.Init(); err != nil {
fmt.Fprintf(os.Stderr, "[e] %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 {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
defer glfw.CloseWindow()
glfw.SetWindowTitle("Aliasing Detector")
glfw.SetSwapInterval(1)
if samples := glfw.WindowParam(glfw.FsaaSamples); samples != 0 {
fmt.Fprintf(os.Stdout, "Context reports FSAA is supported with %d samples\n", samples)
} else {
fmt.Fprintf(os.Stdout, "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()
}
}
// 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
}
}
func (self *Wolf) Draw(center Vectorf, selectedBlockFace *BlockFace) {
gl.PushMatrix()
gl.Translatef(float32(self.position[XAXIS]), float32(self.position[YAXIS]), float32(self.position[ZAXIS]))
gl.Rotated(self.Heading(), 0.0, 1.0, 0.0)
WolfModel.GLDraw()
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 (s *Sprite) Draw(x, y, angle, scale float32, blend bool) {
gl.Enable(gl.TEXTURE_2D)
gl.Disable(gl.COLOR_MATERIAL)
if blend {
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.Enable(gl.BLEND)
} else {
gl.Disable(gl.BLEND)
gl.BlendFunc(gl.ONE, gl.ZERO)
}
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translatef(x, y, 0)
gl.Rotatef(angle*360/(2*math.Pi), 0, 0, 1)
gl.Scalef(scale, scale, 1)
s.tex.Bind(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
gl.Color3f(1, 1, 1)
gl.TexCoord2d(0, 0)
gl.Vertex3f(-0.5*s.width, -0.5*s.height, 0)
gl.TexCoord2d(1, 0)
gl.Vertex3f(0.5*s.width, -0.5*s.height, 0)
gl.TexCoord2d(1, 1)
gl.Vertex3f(0.5*s.width, 0.5*s.height, 0)
gl.TexCoord2d(0, 1)
gl.Vertex3f(-0.5*s.width, 0.5*s.height, 0)
gl.End()
gl.Disable(gl.TEXTURE_2D)
gl.Disable(gl.BLEND)
}
func drawShip(angle float32) {
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(
float32(2.3*math.Cos(2*float64(rad)/math.Pi)+0.2),
float32(2.0*math.Sin(2*float64(rad)/math.Pi)))
}
gl.End()
}
gl.PopMatrix()
}
func reshape(w, h int) {
gl.Viewport(0, 0, w, h)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Ortho(0, float64(w), 0, float64(h), -1, 1)
gl.Scalef(1, -1, 1)
gl.Translatef(0, float32(-h), 0)
gl.MatrixMode(gl.MODELVIEW)
}
func stroke_output(x, y float32, 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()
}
/* new window size or exposure */
func reshape(width int, height int) {
h := float64(height) / float64(width)
gl.Viewport(0, 0, width, height)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Frustum(-1.0, 1.0, -h, h, 5.0, 60.0)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translatef(0.0, 0.0, -40.0)
}
// 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
}
}
func (self *Picker) DrawPlayerItems(t int64, drawQuantities bool) {
gl.PushMatrix()
gl.LoadIdentity()
for i := 0; i < 5; i++ {
itemid := ThePlayer.equippedItems[i]
if itemid != ITEM_NONE {
angle := -(float64(i) + 1.5) * math.Pi / 4
gl.LoadIdentity()
x := self.x - self.actionItemRadius*float32(math.Sin(angle))
y := self.y + self.actionItemRadius*float32(math.Cos(angle))
gl.Translatef(x, y, 0)
gl.Rotated(90, 1.0, 0.0, 0.0)
gl.Rotated(30*math.Sin(float64(t)/1e9+float64(itemid)/2), 0.0, 1.0, 0.0)
gl.Scalef(BLOCK_SCALE, BLOCK_SCALE, BLOCK_SCALE)
gGuiBuffer.Reset()
if itemid < 256 {
TerrainCube(gGuiBuffer, Vectori{}, [18]BlockId{BLOCK_DIRT, BLOCK_DIRT, BLOCK_DIRT, BLOCK_DIRT, BLOCK_AIR, BLOCK_DIRT, BLOCK_AIR, BLOCK_AIR, BLOCK_AIR, BLOCK_AIR, BLOCK_AIR, BLOCK_AIR, BLOCK_AIR, BLOCK_AIR, BLOCK_AIR, BLOCK_AIR, BLOCK_AIR}, NewBlockDefault(BlockId(itemid)), FACE_NONE)
} else {
RenderItemFlat(gGuiBuffer, Vectori{}, BlockId(itemid))
}
gGuiBuffer.RenderDirect(false)
if drawQuantities {
gl.LoadIdentity()
gl.Translatef(x-17*PIXEL_SCALE, y-19*PIXEL_SCALE, 20)
consoleFont.Print(fmt.Sprintf("%d", ThePlayer.inventory[itemid]))
}
}
}
gl.PopMatrix()
}
func reshape(w, h int) {
/* Because Gil specified "screen coordinates" (presumably with an
upper-left origin), this short bit of code sets up the coordinate
system to correspond to actual window coodrinates. This code
wouldn't be required if you chose a (more typical in 3D) abstract
coordinate system. */
gl.Viewport(0, 0, w, h) /* Establish viewing area to cover entire window. */
gl.MatrixMode(gl.PROJECTION) /* Start modifying the projection matrix. */
gl.LoadIdentity() /* Reset project matrix. */
gl.Ortho(0, float64(w), 0, float64(h), -1, 1) /* Map abstract coords directly to window coords. */
gl.Scalef(1, -1, 1) /* Invert Y axis so increasing Y goes down. */
gl.Translatef(0, float32(-h), 0) /* Shift origin up to upper-left corner. */
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
// Food
for coord, _ := range food {
gl.LoadIdentity()
gl.Scalef(0.05, 0.05, 1)
gl.Translatef(float32(coord.x)-5, float32(coord.y)-5, -1)
gl.Begin(gl.QUADS)
gl.Color3f(0.5, float32(coord.x)/10, float32(coord.y)/10)
gl.Vertex3f(0.25, 0.75, 0)
gl.Vertex3f(0.75, 0.75, 0)
gl.Color3f(0.3, float32(coord.x)/10-0.2, float32(coord.y)/10-0.2)
gl.Vertex3f(0.75, 0.25, 0)
gl.Vertex3f(0.25, 0.25, 0)
gl.End()
}
//Snake
for _, coord := range snake.coords {
gl.LoadIdentity()
gl.Scalef(0.05, 0.05, 1)
gl.Translatef(float32(coord.x)-5, float32(coord.y)-5, -1)
gl.Begin(gl.QUADS)
gl.Color3f(float32(coord.y)/10, float32(coord.x)/10, 0.5)
gl.Vertex3f(0, 1, 0)
gl.Vertex3f(1, 1, 0)
gl.Color3f(float32(coord.y)/10-0.2, float32(coord.x)/10-0.2, 0.3)
gl.Vertex3f(1, 0, 0)
gl.Vertex3f(0, 0, 0)
gl.End()
}
glfw.SwapBuffers()
}
// Render stuff
func Draw() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity()
gl.Translatef(-1.5, 0, -6)
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()
glfw.SwapBuffers()
}
func (s sprite) render() {
gl.Translatef(float32(s.X), float32(s.Y), float32(s.Z))
gl.Rotatef(90.0, 1.0, 0.0, 0.0)
s.tex.Bind(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0.0, 1.0)
gl.Vertex3f(-s.width/2.0, -s.height/2.0, 0.0)
gl.TexCoord2f(1.0, 1.0)
gl.Vertex3f(s.width/2.0, -s.height/2.0, 0.0)
gl.TexCoord2f(1.0, 0.0)
gl.Vertex3f(s.width/2.0, s.height/2.0, 0.0)
gl.TexCoord2f(0.0, 0.0)
gl.Vertex3f(-s.width/2.0, s.height/2.0, 0.0)
gl.End()
s.tex.Unbind(gl.TEXTURE_2D)
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity()
gl.Translatef(0, 0, -20+globalState.MousePos.Z*globalState.speed)
gl.Rotatef(globalState.Rot.X, 1, 0, 0)
gl.Rotatef(globalState.Rot.Y, 0, 1, 0)
gl.Rotatef(globalState.Rot.Z, 0, 0, 1)
if globalState.speed != 1 {
gl.Scalef(globalState.speed, globalState.speed, globalState.speed)
}
gl.RenderMode(gl.RENDER)
gl.Begin(gl.QUADS)
for i, _ := range mesh.Faces {
if colors, ok := faceColor[i]; ok {
gl.Color3f(colors[0], colors[1], colors[2])
} else {
faceColor[i] = make([]float32, 3)
faceColor[i][0] = rand.Float32()
faceColor[i][1] = rand.Float32()
faceColor[i][2] = rand.Float32()
gl.Color3f(faceColor[i][0], faceColor[i][1], faceColor[i][2])
}
face := &mesh.Faces[i]
for j, _ := range face.Vertices {
var v *wfobj.Vertex
if len(face.Normals) > 0 {
v = &face.Normals[j]
gl.Normal3f(v.X, v.Y, v.Z)
}
v = &face.Vertices[j]
gl.Vertex3f(v.X, v.Y, v.Z)
}
}
gl.End()
gl.Finish()
gl.Flush()
sdl.GL_SwapBuffers()
}
// 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
}
}
func initGl() {
h := float64(height) / float64(width)
gl.Viewport(0, 0, width, height)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Frustum(-1.0, 1.0, -h, h, 5.0, 60.0)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translatef(0.0, 0.0, -6.0)
gl.EnableClientState(gl.VERTEX_ARRAY)
gl.EnableClientState(gl.TEXTURE_COORD_ARRAY)
gl.VertexPointer(3, 0, &vertices[0][0])
gl.TexCoordPointer(2, 0, &texCoords[0][0])
}
func (self *Font) Print(str string) {
for _, ch := range str {
self.textures[ch].Bind(gl.TEXTURE_2D)
h := float32(self.height) * PIXEL_SCALE
w := float32(self.widths[ch]) * PIXEL_SCALE
gl.Color4ub(255, 255, 255, 255)
gl.Begin(gl.QUADS)
gl.TexCoord2d(0, 0)
gl.Vertex2f(0, 0) // Bottom Left Of The Texture and Quad
gl.TexCoord2d(1, 0)
gl.Vertex2f(w, 0) // Bottom Right Of The Texture and Quad
gl.TexCoord2d(1, 1)
gl.Vertex2f(w, h) // Top Right Of The Texture and Quad
gl.TexCoord2d(0, 1)
gl.Vertex2f(0, h) // Top Left Of The Texture and Quad
gl.End()
gl.Translatef(w, 0, 0)
self.textures[ch].Unbind(gl.TEXTURE_2D)
}
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity()
gl.Translatef(1.5, 0, -6)
gl.Rotatef(quadAngle, 1, 1, 1)
gl.Begin(gl.QUADS)
for i, _ := range mesh.Faces {
gl.Color3f(rand.Float32(), rand.Float32(), rand.Float32())
face := &mesh.Faces[i]
for j, _ := range face.Vertices {
v := &face.Vertices[j]
gl.Vertex3f(v.X, v.Y, v.Z)
}
}
gl.End()
quadAngle -= 0.15
glfw.SwapBuffers()
}
func reshape(width, height int) {
shift, aspect := 0, float64(width)/float64(height)
if aspect > 2 {
aspect = 2
shift = width/2 - height
width = height * 2
}
gl.Viewport(shift, 0, width, height)
gl.Enable(gl.DEPTH_TEST)
gl.Enable(gl.COLOR_MATERIAL)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
glu.Perspective(45, aspect, NEAR_Z, FAR_Z)
gl.Enable(gl.LIGHTING)
gl.Lightfv(gl.LIGHT0, gl.POSITION, []float32{-2, -3, 5, 0})
gl.Lightfv(gl.LIGHT0, gl.AMBIENT, []float32{0.1, 0.1, 0.2, 1})
gl.Lightfv(gl.LIGHT0, gl.DIFFUSE, []float32{0.4, 0.35, 0.2, 1})
gl.Lightfv(gl.LIGHT0, gl.SPECULAR, []float32{1, 1, 1, 1})
gl.Enable(gl.LIGHT0)
gl.Rotatef(-30, 1, 0, 0)
gl.Translatef(0, 0, -5)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Lightfv(gl.LIGHT1, gl.AMBIENT, []float32{0, 0, 0, 1})
gl.Lightfv(gl.LIGHT1, gl.DIFFUSE, []float32{0.4, 0.4, 0.4, 1})
gl.Lightfv(gl.LIGHT1, gl.SPECULAR, []float32{1, 1, 1, 1})
gl.Enable(gl.LIGHT1)
}
func (self *Wolf) Draw(center Vectorf, selectedBlockFace *BlockFace) {
pos := Vectorf{self.position[XAXIS], self.position[YAXIS], self.position[ZAXIS]}
gl.PushMatrix()
gl.Translated(self.position[XAXIS], self.position[YAXIS], self.position[ZAXIS])
gl.Rotated(self.Heading(), 0.0, 1.0, 0.0)
// Translate to top of ground block
gl.Translatef(0.0, -0.5, 0.0)
pos[YAXIS] += -0.5
headHeight := 0.25
headWidth := headHeight
headDepth := headHeight * 2.0
neckHeight := 0.0
torsoWidth := 1.5 * headHeight
torsoHeight := 1.5 * headHeight
torsoDepth := 5 * headHeight
legHeight := 5*headHeight - torsoHeight - neckHeight - headHeight
legWidth := (torsoWidth - 0.25*headHeight) / 2
legDepth := legWidth
var legAngle, step float64
horzSpeed := self.velocity[XAXIS]*self.velocity[XAXIS] + self.velocity[ZAXIS]*self.velocity[ZAXIS]
legAngle = math.Sin(self.walkSequence) * (15 + 55*horzSpeed/(self.sprintSpeed*self.sprintSpeed))
headAngle := 30.0
// torsoAngle = -math.Abs(legAngle / 6)
step = headHeight * 0.3 * math.Pow(math.Sin(self.walkSequence), 2)
gl.Translated(0.0, step, 0)
pos[YAXIS] += step
// Translate to top of leg
// Translate to centre of front left leg
gl.Translated(0.0, legHeight, 0)
pos[YAXIS] += legHeight
legDepthOffset := torsoDepth/2 - legWidth/2
legHeightOffset := -legHeight / 2
legWidthOffset := (legWidth + 0.25*headHeight) / 2
// Translate to centre of front left leg
gl.Translated(legDepthOffset, 0, legWidthOffset)
gl.Rotated(legAngle, 0.0, 0.0, 1.0)
gl.Translated(0, legHeightOffset, 0)
pos[XAXIS] += legDepthOffset
pos[YAXIS] += legHeightOffset
pos[ZAXIS] += legWidthOffset
Cuboid(pos, legWidth, legHeight, legDepth, textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], FACE_NONE)
pos[XAXIS] -= legDepthOffset
pos[YAXIS] -= legHeightOffset
pos[ZAXIS] -= legWidthOffset
gl.Translated(0, -legHeightOffset, 0)
gl.Rotated(-legAngle, 0.0, 0.0, 1.0)
gl.Translated(-legDepthOffset, 0, -legWidthOffset)
legWidthOffset = -legWidthOffset
if horzSpeed <= self.walkingSpeed*self.walkingSpeed {
legAngle = -legAngle
}
gl.Translated(legDepthOffset, 0, legWidthOffset)
gl.Rotated(legAngle, 0.0, 0.0, 1.0)
gl.Translated(0, legHeightOffset, 0)
pos[XAXIS] += legDepthOffset
pos[YAXIS] += legHeightOffset
pos[ZAXIS] += legWidthOffset
Cuboid(pos, legWidth, legHeight, legDepth, textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], FACE_NONE)
pos[XAXIS] -= legDepthOffset
pos[YAXIS] -= legHeightOffset
pos[ZAXIS] -= legWidthOffset
gl.Translated(0, -legHeightOffset, 0)
gl.Rotated(-legAngle, 0.0, 0.0, 1.0)
gl.Translated(-legDepthOffset, 0, -legWidthOffset)
legDepthOffset = -legDepthOffset
legWidthOffset = -legWidthOffset
if horzSpeed > self.walkingSpeed*self.walkingSpeed {
legAngle = -legAngle
}
gl.Translated(legDepthOffset, 0, legWidthOffset)
gl.Rotated(legAngle, 0.0, 0.0, 1.0)
gl.Translated(0, legHeightOffset, 0)
pos[XAXIS] += legDepthOffset
pos[YAXIS] += legHeightOffset
pos[ZAXIS] += legWidthOffset
Cuboid(pos, legWidth, legHeight, legDepth, textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], FACE_NONE)
pos[XAXIS] -= legDepthOffset
pos[YAXIS] -= legHeightOffset
pos[ZAXIS] -= legWidthOffset
gl.Translated(0, -legHeightOffset, 0)
gl.Rotated(-legAngle, 0.0, 0.0, 1.0)
gl.Translated(-legDepthOffset, 0, -legWidthOffset)
legWidthOffset = -legWidthOffset
if horzSpeed <= self.walkingSpeed*self.walkingSpeed {
legAngle = -legAngle
}
gl.Translated(legDepthOffset, 0, legWidthOffset)
gl.Rotated(legAngle, 0.0, 0.0, 1.0)
gl.Translated(0, legHeightOffset, 0)
pos[XAXIS] += legDepthOffset
pos[YAXIS] += legHeightOffset
pos[ZAXIS] += legWidthOffset
Cuboid(pos, legWidth, legHeight, legDepth, textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], textures[TEXTURE_WOLF_LEG], FACE_NONE)
pos[XAXIS] -= legDepthOffset
pos[YAXIS] -= legHeightOffset
pos[ZAXIS] -= legWidthOffset
gl.Translated(0, -legHeightOffset, 0)
gl.Rotated(-legAngle, 0.0, 0.0, 1.0)
gl.Translated(-legDepthOffset, 0, -legWidthOffset)
//gl.Rotated(torsoAngle, 0.0, 0.0, 1.0)
// Translate to centre of torso
gl.Translated(0.0, torsoHeight/2, 0.0)
pos[YAXIS] += torsoHeight / 2
Cuboid(pos, torsoWidth, torsoHeight, torsoDepth, textures[TEXTURE_WOLF_TORSO_FRONT], textures[TEXTURE_WOLF_TORSO_BACK], textures[TEXTURE_WOLF_TORSO_SIDE], textures[TEXTURE_WOLF_TORSO_SIDE], textures[TEXTURE_WOLF_TORSO_TOP], textures[TEXTURE_WOLF_TORSO_TOP], FACE_NONE)
// Translate to shoulders
gl.Translated(0.0, torsoHeight/2, 0.0)
pos[YAXIS] += torsoHeight / 2
// Translate to centre of head
gl.Translated(torsoDepth/2+headDepth*0.5, 0.0, 0.0)
pos[XAXIS] += torsoDepth/2 + headDepth*0.5
pos[YAXIS] += 0.0
gl.Rotated(-headAngle, 0.0, 0.0, 1.0)
Cuboid(pos, headWidth, headHeight, headDepth, textures[TEXTURE_WOLF_HEAD_FRONT], textures[TEXTURE_WOLF_HEAD_BACK], textures[TEXTURE_WOLF_HEAD_SIDE], textures[TEXTURE_WOLF_HEAD_SIDE], textures[TEXTURE_WOLF_HEAD_TOP], textures[TEXTURE_WOLF_HEAD_BOTTOM], FACE_NONE)
gl.PopMatrix()
}
func (player *Player) Draw(center Vectorf, selectedBlockFace *BlockFace) {
pos := Vectorf{player.position[XAXIS], player.position[YAXIS], player.position[ZAXIS]}
gl.PushMatrix()
gl.Translatef(float32(player.position[XAXIS]), float32(player.position[YAXIS]), float32(player.position[ZAXIS]))
//stepHeight := float32(math.Sin(player.Bounce * piover180)/10.0)
gl.Rotated(player.Heading(), 0.0, 1.0, 0.0)
// Translate to top of ground block
gl.Translatef(0.0, -0.5, 0.0)
pos[YAXIS] += -0.5
// From http://www.realcolorwheel.com/human.htm
headHeight := float64(0.25)
hatHeight := headHeight
brimHeight := 0.15 * headHeight
brimWidth := 1.5 * headHeight
brimDepth := 1.5 * headHeight
neckHeight := 0.25 * headHeight
torsoWidth := 2 * headHeight
torsoHeight := 3.25 * headHeight
torsoDepth := 1 * headHeight
legHeight := 8*headHeight - torsoHeight - neckHeight - headHeight
legWidth := (torsoWidth - 0.25*headHeight) / 2
legDepth := legWidth
armHeight := 2.75 * headHeight
armWidth := 0.75 * torsoDepth
armDepth := 0.75 * torsoDepth
// lowerArmHeight := 1.25 * headHeight
// handHeight := 0.75 * headHeight
var legAngle, torsoAngle, leftArmAngle, rightArmAngle, step float64
// if player.velocity[YAXIS] != 0 {
// legAngle = 20
// leftArmAngle = 120
// rightArmAngle = 120
// } else {
legAngle = 40 * (math.Abs(player.velocity[XAXIS]) + math.Abs(player.velocity[ZAXIS])) / player.walkingSpeed * math.Sin(player.walkSequence)
torsoAngle = -math.Abs(legAngle / 6)
leftArmAngle = -legAngle * 1.2
rightArmAngle = legAngle * 1.2
step = headHeight * 0.1 * math.Pow(math.Sin(player.walkSequence), 2)
// }
gl.Translated(0.0, step, 0)
pos[YAXIS] += step
// Translate to top of leg
gl.Translated(0.0, legHeight, 0)
pos[YAXIS] += legHeight
// Translate to centre of leg
gl.Rotated(legAngle, 0.0, 0.0, 1.0)
gl.Translated(0.0, -legHeight/2, (legWidth+0.25*headHeight)/2)
pos[YAXIS] += -legHeight / 2
pos[ZAXIS] += (legWidth + 0.25*headHeight) / 2
Cuboid(pos, legWidth, legHeight, legDepth, textures[TEXTURE_LEG], textures[TEXTURE_LEG], textures[TEXTURE_LEG_SIDE], textures[TEXTURE_LEG_SIDE], textures[32], textures[32], FACE_NONE)
gl.Translated(0.0, legHeight/2, -(legWidth+0.25*headHeight)/2)
pos[YAXIS] += legHeight / 2
pos[ZAXIS] += -(legWidth + 0.25*headHeight) / 2
gl.Rotated(-legAngle, 0.0, 0.0, 1.0)
gl.Rotated(-legAngle, 0.0, 0.0, 1.0)
gl.Translated(0.0, -legHeight/2, -(legWidth+0.25*headHeight)/2)
pos[YAXIS] += -legHeight / 2
pos[ZAXIS] += -(legWidth + 0.25*headHeight) / 2
Cuboid(pos, legWidth, legHeight, legDepth, textures[TEXTURE_LEG], textures[TEXTURE_LEG], textures[TEXTURE_LEG_SIDE], textures[TEXTURE_LEG_SIDE], textures[32], textures[32], FACE_NONE)
gl.Translated(0.0, legHeight/2, (legWidth+0.25*headHeight)/2)
pos[YAXIS] += legHeight / 2
pos[ZAXIS] += (legWidth + 0.25*headHeight) / 2
gl.Rotated(+legAngle, 0.0, 0.0, 1.0)
gl.Rotated(torsoAngle, 0.0, 0.0, 1.0)
// Translate to centre of torso
gl.Translated(0.0, torsoHeight/2, 0.0)
pos[YAXIS] += torsoHeight / 2
Cuboid(pos, torsoWidth, torsoHeight, torsoDepth, textures[TEXTURE_TORSO_FRONT], textures[TEXTURE_TORSO_BACK], textures[TEXTURE_TORSO_LEFT], textures[TEXTURE_TORSO_RIGHT], textures[TEXTURE_TORSO_TOP], textures[TEXTURE_TORSO_TOP], FACE_NONE)
// Translate to shoulders
gl.Translated(0.0, torsoHeight/2, 0.0)
pos[YAXIS] += torsoHeight / 2
gl.Rotated(leftArmAngle, 0.0, 0.0, 1.0)
gl.Translated(0.0, -armHeight/2, torsoWidth/2+armWidth/2)
pos[YAXIS] += -armHeight / 2
pos[ZAXIS] += torsoWidth/2 + armWidth/2
Cuboid(pos, armWidth, armHeight, armDepth, textures[TEXTURE_ARM], textures[TEXTURE_ARM], textures[TEXTURE_ARM], textures[TEXTURE_ARM], textures[TEXTURE_ARM_TOP], textures[TEXTURE_HAND], FACE_NONE)
gl.Translated(0.0, armHeight/2, -torsoWidth/2-armWidth/2)
pos[YAXIS] += armHeight / 2
pos[ZAXIS] += -torsoWidth/2 + armWidth/2
gl.Rotated(-leftArmAngle, 0.0, 0.0, 1.0)
gl.Rotated(rightArmAngle, 0.0, 0.0, 1.0)
gl.Translated(0.0, -armHeight/2, -torsoWidth/2-armWidth/2)
pos[YAXIS] += -armHeight / 2
pos[ZAXIS] += -torsoWidth/2 + armWidth/2
Cuboid(pos, armWidth, armHeight, armDepth, textures[TEXTURE_ARM], textures[TEXTURE_ARM], textures[TEXTURE_ARM], textures[TEXTURE_ARM], textures[TEXTURE_ARM_TOP], textures[TEXTURE_HAND], FACE_NONE)
gl.Translated(0.0, armHeight/2, torsoWidth/2+armWidth/2)
pos[YAXIS] += armHeight / 2
pos[ZAXIS] += torsoWidth/2 + armWidth/2
gl.Rotated(-rightArmAngle, 0.0, 0.0, 1.0)
// Translate to centre of head
gl.Translated(0.0, neckHeight+headHeight/2, 0.0)
pos[YAXIS] += neckHeight + headHeight/2
if selectedBlockFace != nil {
blockPos := selectedBlockFace.pos.Vectorf()
headPos := player.position.Add(Vectorf{0, headHeight * 9, 0})
blockDir := blockPos.Minus(headPos)
if player.Facing(blockDir) {
yrot := (math.Atan2(blockDir[XAXIS], blockDir[ZAXIS]) - math.Pi/2) * 180 / math.Pi
zrot, xrot := -12.0, -12.0
gl.Rotated(-player.Heading(), 0.0, 1.0, 0.0)
gl.Rotated(yrot, 0.0, 1.0, 0.0)
gl.Rotated(zrot, 0.0, 0.0, 1.0)
gl.Rotated(xrot, 1.0, 0.0, 0.0)
}
}
Cuboid(pos, headHeight, headHeight, headHeight, textures[TEXTURE_HEAD_FRONT], textures[TEXTURE_HEAD_BACK], textures[TEXTURE_HEAD_LEFT], textures[TEXTURE_HEAD_RIGHT], nil, textures[TEXTURE_HEAD_BOTTOM], FACE_NONE)
// Translate to hat brim
gl.Translated(0.0, headHeight/2+brimHeight/2, 0.0)
pos[YAXIS] += headHeight/2 + brimHeight/2
Cuboid(pos, brimWidth, brimHeight, brimDepth, textures[TEXTURE_BRIM], textures[TEXTURE_BRIM], textures[TEXTURE_BRIM], textures[TEXTURE_BRIM], textures[TEXTURE_BRIM], textures[TEXTURE_BRIM], FACE_NONE)
gl.Translated(0.0, brimHeight/2+hatHeight/2, 0.0)
pos[YAXIS] += headHeight/2 + brimHeight/2
Cuboid(pos, hatHeight, hatHeight, hatHeight, textures[TEXTURE_HAT_FRONT], textures[TEXTURE_HAT_BACK], textures[TEXTURE_HAT_LEFT], textures[TEXTURE_HAT_RIGHT], textures[TEXTURE_HAT_TOP], nil, FACE_NONE)
gl.PopMatrix()
}
func draw_screen() {
angle := float32(0.0)
v := [][]float32{
{-1.0, -1.0, 1.0},
{1.0, -1.0, 1.0},
{1.0, 1.0, 1.0},
{-1.0, 1.0, 1.0},
{-1.0, -1.0, -1.0},
{1.0, -1.0, -1.0},
{1.0, 1.0, -1.0},
{-1.0, 1.0, -1.0}}
red := []byte{255, 0, 0, 255}
green := []byte{0, 255, 0, 255}
blue := []byte{0, 0, 255, 255}
white := []byte{255, 255, 255, 255}
yellow := []byte{0, 255, 255, 255}
black := []byte{0, 0, 0, 255}
orange := []byte{255, 255, 0, 255}
purple := []byte{255, 0, 255, 0}
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translatef(0.0, 0.0, -5.0)
gl.Rotatef(angle, 0.0, 1.0, 0.0)
if should_rotate {
angle++
if angle > 360.0 {
angle = 0.0
}
}
gl.Begin(gl.TRIANGLES)
gl.Color4ubv(red)
gl.Vertex3fv(v[0])
gl.Color4ubv(green)
gl.Vertex3fv(v[1])
gl.Color4ubv(blue)
gl.Vertex3fv(v[2])
gl.Color4ubv(red)
gl.Vertex3fv(v[0])
gl.Color4ubv(blue)
gl.Vertex3fv(v[2])
gl.Color4ubv(white)
gl.Vertex3fv(v[3])
gl.Color4ubv(green)
gl.Vertex3fv(v[1])
gl.Color4ubv(black)
gl.Vertex3fv(v[5])
gl.Color4ubv(orange)
gl.Vertex3fv(v[6])
gl.Color4ubv(green)
gl.Vertex3fv(v[1])
gl.Color4ubv(orange)
gl.Vertex3fv(v[6])
gl.Color4ubv(blue)
gl.Vertex3fv(v[2])
gl.Color4ubv(black)
gl.Vertex3fv(v[5])
gl.Color4ubv(yellow)
gl.Vertex3fv(v[4])
gl.Color4ubv(purple)
gl.Vertex3fv(v[7])
gl.Color4ubv(black)
gl.Vertex3fv(v[5])
gl.Color4ubv(purple)
gl.Vertex3fv(v[7])
gl.Color4ubv(orange)
gl.Vertex3fv(v[6])
gl.Color4ubv(yellow)
gl.Vertex3fv(v[4])
gl.Color4ubv(red)
gl.Vertex3fv(v[0])
gl.Color4ubv(white)
gl.Vertex3fv(v[3])
gl.Color4ubv(yellow)
gl.Vertex3fv(v[4])
gl.Color4ubv(white)
gl.Vertex3fv(v[3])
gl.Color4ubv(purple)
gl.Vertex3fv(v[7])
gl.Color4ubv(white)
gl.Vertex3fv(v[3])
gl.Color4ubv(blue)
gl.Vertex3fv(v[2])
gl.Color4ubv(orange)
gl.Vertex3fv(v[6])
gl.Color4ubv(white)
gl.Vertex3fv(v[3])
gl.Color4ubv(orange)
gl.Vertex3fv(v[6])
gl.Color4ubv(purple)
gl.Vertex3fv(v[7])
gl.Color4ubv(green)
gl.Vertex3fv(v[1])
gl.Color4ubv(red)
gl.Vertex3fv(v[0])
gl.Color4ubv(yellow)
gl.Vertex3fv(v[4])
gl.Color4ubv(green)
gl.Vertex3fv(v[1])
gl.Color4ubv(yellow)
gl.Vertex3fv(v[4])
gl.Color4ubv(black)
gl.Vertex3fv(v[5])
gl.End()
sdl.GL_SwapBuffers()
}
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()
}
// 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
}
}
// 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
}
}