// Shouldn't have tabs nor newlines
func (o *OpenGlStream) PrintSegment(s string) {
if s == "" {
return
}
if o.BackgroundColor != nil && o.BorderColor == nil {
gl.PushAttrib(gl.CURRENT_BIT)
gl.Color3dv((*float64)(&o.BackgroundColor[0]))
gl.PushMatrix()
gl.Translated(float64(o.pos[0]), float64(o.pos[1]), 0)
for range s {
gl.CallList(oFontBackground)
}
gl.PopMatrix()
gl.PopAttrib()
}
gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_LOD_BIAS, float32(lodBias*0.01))
gl.Enable(gl.BLEND)
defer gl.Disable(gl.BLEND)
gl.Enable(gl.TEXTURE_2D)
defer gl.Disable(gl.TEXTURE_2D)
gl.PushMatrix()
gl.Translated(float64(o.pos[0]), float64(o.pos[1]), 0)
gl.ListBase(oFontBase + uint32(o.FontOptions)*96)
gl.CallLists(int32(len(s)), gl.UNSIGNED_BYTE, gl.Ptr(&[]byte(s)[0]))
gl.PopMatrix()
//CheckGLError()
}
func (w *MultitouchTestBoxWidget) Render() {
colors := [...]mgl64.Vec3{
{0 / 255.0, 140 / 255.0, 0 / 255.0},
{0 / 255.0, 98 / 255.0, 140 / 255.0},
{194 / 255.0, 74 / 255.0, 0 / 255.0},
{89 / 255.0, 0 / 255.0, 140 / 255.0},
{191 / 255.0, 150 / 255.0, 0 / 255.0},
{140 / 255.0, 0 / 255.0, 0 / 255.0},
}
backgroundColor := colors[w.color]
//borderColor := backgroundColor
switch 1 {
case 0:
DrawBorderlessBox(w.pos, mgl64.Vec2{200, 200}, backgroundColor)
case 1:
gl.PushMatrix()
gl.Translated(w.pos[0], w.pos[1], 0)
gl.Color3dv(&backgroundColor[0])
gl.EnableClientState(gl.VERTEX_ARRAY)
gl.BindBuffer(gl.ARRAY_BUFFER, w.buffer)
gl.VertexPointer(2, gl.FLOAT, 0, nil)
gl.DrawArrays(gl.TRIANGLE_FAN, 0, 4)
gl.PopMatrix()
}
}
func drawSpinner(spinner int) {
gl.PushMatrix()
gl.Translated(30.5, 30.5, 0)
gl.Rotated(float64(spinner), 0, 0, 1)
gl.Color3d(0, 0, 0)
gl.Rectd(-0.5, -10.5, 0.5, 10.5)
gl.PopMatrix()
}
// list of boxes
// the point of origin
// the translated offset from the origin
// the angles co-ordinate
// the index of the array
// the degree of angular rotation
func wall(b []uint32, o, offset, a_cord cord, i int32, a float64, s size) []uint32 {
b = append(b, gl.GenLists(1))
gl.NewList(b[i], gl.COMPILE)
gl.Translated(o.x+offset.x, o.y+offset.y, o.z+offset.z)
gl.Rotated(a, a_cord.x, a_cord.y, a_cord.z)
box(s.x, s.y, s.z)
gl.EndList()
return b
}
func InitFont() {
LoadTexture(filepath.FromSlash("/Users/Dmitri/Dropbox/Work/2015/Bitmap Fonts/Helvetica Neue.png"))
oFontBase = gl.GenLists(32 + 96)
for i := 0; i < 96; i++ {
const shiftY = float64(1.0 / 6)
indexX, indexY := i%16, i/16
charWidth := shiftXs[indexY][indexX+1] - shiftXs[indexY][indexX]
gl.NewList(oFontBase+uint32(i+32), gl.COMPILE)
gl.Begin(gl.QUADS)
gl.TexCoord2d(shiftXs[indexY][indexX], float64(indexY)*shiftY)
gl.Vertex2d(0, 0)
gl.TexCoord2d(shiftXs[indexY][indexX+1], float64(indexY)*shiftY)
gl.Vertex2d(fontWidth*charWidth/float64(1.0/16), 0)
gl.TexCoord2d(shiftXs[indexY][indexX+1], float64(indexY+1)*shiftY)
gl.Vertex2d(fontWidth*charWidth/float64(1.0/16), fontHeight)
gl.TexCoord2d(shiftXs[indexY][indexX], float64(indexY+1)*shiftY)
gl.Vertex2d(0, fontHeight)
gl.End()
gl.Translated(fontWidth*charWidth/float64(1.0/16), 0.0, 0.0)
gl.EndList()
}
oFontBackground = gl.GenLists(1)
gl.NewList(oFontBackground, gl.COMPILE)
gl.Begin(gl.QUADS)
gl.Vertex2d(0, 0)
gl.Vertex2d(0, fontHeight)
gl.Vertex2d(fontWidth, fontHeight)
gl.Vertex2d(fontWidth, 0)
gl.End()
gl.Translated(fontWidth, 0.0, 0.0)
gl.EndList()
CheckGLError()
}
func (c *Camera) lookAt(at vector.V3) {
up := vector.V3{0, 0, 1}
fw := at.Sub(c.Pos).Normalized()
side := fw.Cross(up).Normalized()
up = side.Cross(fw).Normalized()
m := [16]float64{
side.X, up.X, -fw.X, 0,
side.Y, up.Y, -fw.Y, 0,
side.Z, up.Z, -fw.Z, 0,
0, 0, 0, 1,
}
gl.MatrixMode(gl.MODELVIEW)
gl.LoadMatrixd(&m[0])
gl.Translated(-c.Pos.X, -c.Pos.Y, -c.Pos.Z)
// Update frustum
nc := c.Pos.Sub(fw.Scaled(-c.frustum.zNear))
fc := c.Pos.Sub(fw.Scaled(-c.frustum.zFar))
planes := []vector.Plane{
vector.Plane{fw, nc}, // NEARP
vector.Plane{fw.Scaled(-1), fc}, // FARP
}
nh, nw := c.frustum.nearH, c.frustum.nearW
// TOP
aux := nc.Add(up.Scaled(nh)).Sub(c.Pos).Normalized()
normal := aux.Cross(side)
planes = append(planes, vector.Plane{normal, nc.Add(up.Scaled(nh))})
// BOTTOM
aux = nc.Sub(up.Scaled(nh)).Sub(c.Pos).Normalized()
normal = side.Cross(aux)
planes = append(planes, vector.Plane{normal, nc.Sub(up.Scaled(nh))})
// LEFT
aux = nc.Sub(side.Scaled(nw)).Sub(c.Pos).Normalized()
normal = aux.Cross(up)
planes = append(planes, vector.Plane{normal, nc.Sub(side.Scaled(nw))})
// LEFT
aux = nc.Add(side.Scaled(nw)).Sub(c.Pos).Normalized()
normal = up.Cross(aux)
planes = append(planes, vector.Plane{normal, nc.Add(side.Scaled(nw))})
c.frustum.planes = planes
}
func InitFont() {
LoadTexture(filepath.Join("data", "Font.png"))
oFontBase = gl.GenLists(32 + 96*4)
for i := 0; i < 96*4; i++ {
const shiftX, shiftY = float64(1.0 / 16), float64(1.0 / 6 / 4)
indexX, indexY := i%16, i/16
gl.NewList(oFontBase+uint32(i+32), gl.COMPILE)
gl.Begin(gl.QUADS)
gl.TexCoord2d(float64(indexX)*shiftX, float64(indexY)*shiftY)
gl.Vertex2i(0, 0)
gl.TexCoord2d(float64(indexX+1)*shiftX, float64(indexY)*shiftY)
gl.Vertex2i(fontWidth, 0)
gl.TexCoord2d(float64(indexX+1)*shiftX, float64(indexY+1)*shiftY)
gl.Vertex2i(fontWidth, fontHeight)
gl.TexCoord2d(float64(indexX)*shiftX, float64(indexY+1)*shiftY)
gl.Vertex2i(0, fontHeight)
gl.End()
gl.Translated(fontWidth, 0.0, 0.0)
gl.EndList()
}
oFontBackground = gl.GenLists(1)
gl.NewList(oFontBackground, gl.COMPILE)
gl.Begin(gl.QUADS)
gl.Vertex2i(0, 0)
gl.Vertex2i(0, fontHeight)
gl.Vertex2i(fontWidth, fontHeight)
gl.Vertex2i(fontWidth, 0)
gl.End()
gl.Translated(fontWidth, 0.0, 0.0)
gl.EndList()
CheckGLError()
}
// general draw function
func draw() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT) // CARGOCULT
gl.PushMatrix() // CARGOCULT
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.Translated(0.0, 0.0, view_z)
for i := range boxes {
gl.PushMatrix() // CARGOCULT
gl.CallList(boxes[i])
gl.PopMatrix() // CARGOCULT
}
gl.PopMatrix() // CARGOCULT
sdl.GL_SwapBuffers() // CARGOCULT
}
func (this *Pointer) Render() {
switch {
case this.VirtualCategory == POINTING && len(this.State.Axes) >= 2:
// Prevent pointer from being drawn when the OS mouse pointer is visible.
{
// HACK
var windowSize [2]int
if globalWindow != nil {
windowSize[0], windowSize[1] = globalWindow.GetSize()
}
// HACK: OS X specific.
const border = 3
if this.State.Axes[1] < 0 || this.State.Axes[0] < border || this.State.Axes[0] >= float64(windowSize[0])-border || this.State.Axes[1] >= float64(windowSize[1])-border {
break
}
}
gl.PushMatrix()
defer gl.PopMatrix()
gl.Translated(float64(NearInt64(this.State.Axes[0]))+0.5, float64(NearInt64(this.State.Axes[1]))+0.5, 0)
const size float64 = 12 * 40 / 40
gl.Color3d(1, 1, 1)
gl.Begin(gl.TRIANGLE_FAN)
gl.Vertex2d(0, 0)
gl.Vertex2d(0, size)
gl.Vertex2d(size*0.85*math.Sin(math.Pi/8), size*0.85*math.Cos(math.Pi/8))
gl.Vertex2d(size/math.Sqrt2, size/math.Sqrt2)
gl.End()
gl.Begin(gl.LINE_LOOP)
gl.Color3d(0, 0, 0)
gl.Vertex2d(0, 0)
gl.Vertex2d(0, size)
gl.Color3d(0.75, 0.75, 0.75)
gl.Vertex2d(size*0.85*math.Sin(math.Pi/8), size*0.85*math.Cos(math.Pi/8))
gl.Color3d(0, 0, 0)
gl.Vertex2d(size/math.Sqrt2, size/math.Sqrt2)
gl.End()
}
}
// OpenGL draw function
func draw(window *glfw.Window) {
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.PushMatrix()
gl.Disable(gl.LIGHTING)
width, height := window.GetSize()
x := float64(width)
y := float64(height)
h := 0
gl.Color4f(.1, .1, .1, .8)
gl.LineWidth(1.0)
// x方向
var x0, x1, y0, y1 float64
var deltaX, deltaY float64
d := width / 2
x0 = -x
x1 = -x
y0 = -y
y1 = y
deltaX = ((2 * x) / float64(d))
for i := 0; i < d; i++ {
x0 = x0 + deltaX
gl.Begin(gl.LINES)
gl.Vertex3f(float32(x0), float32(y0), float32(h))
gl.Vertex3f(float32(x0), float32(y1), float32(h))
gl.End()
}
// y方向
x0 = -x
x1 = x
deltaY = ((2 * y) / float64(d))
for i := 0; i < d; i++ {
y0 = y0 + deltaY
gl.Begin(gl.LINES)
gl.Vertex3f(float32(x0), float32(y0), float32(h))
gl.Vertex3f(float32(x1), float32(y0), float32(h))
gl.End()
}
gl.PopMatrix()
// draw boxes
for _, room := range rooms {
gl.PushMatrix()
rot := room.Box.Body.Angle() * chipmunk.DegreeConst
gl.Rotatef(float32(rot), 0, 0, 1.0)
x := roundm(float64(room.Box.Body.Position().X), 4.0)
y := roundm(float64(room.Box.Body.Position().Y), 4.0)
gl.Translated(x, y, 0.0)
drawRoom(room)
gl.PopMatrix()
}
}
func (ctx *DrawContext) drawSphere(p vector.V3, r float64, c colorful.Color) {
/* TODO:
- decrease sphere detail if it's further away
- only draw spheres that would be visible inside the frustum:
- (no small spheres near the far plane)
*/
if ctx.cam.SphereInFrustum(p, r) == OUTSIDE {
return
}
gl.Color3f(float32(c.R), float32(c.G), float32(c.B))
gl.MatrixMode(gl.MODELVIEW)
gl.PushMatrix()
defer gl.PopMatrix()
slices := int(math.Max(10, 5*math.Log(r+1)))
gl.Translated(p.X, p.Y, p.Z)
gl.Scaled(r, r, r)
l, ok := uint32(0), false
if ctx.wireframe {
l, ok = ctx.spheresWireframe[slices]
} else {
l, ok = ctx.spheresSolid[slices]
}
if !ok {
ctx.listId++ // XXX: atomic?
l = ctx.listId
gl.NewList(l, gl.COMPILE)
for i := 0; i <= slices; i++ {
lat0 := math.Pi * (-0.5 + float64(i-1)/float64(slices))
z0 := math.Sin(lat0)
zr0 := math.Cos(lat0)
lat1 := math.Pi * (-0.5 + float64(i)/float64(slices))
z1 := math.Sin(lat1)
zr1 := math.Cos(lat1)
if ctx.wireframe {
gl.Begin(gl.LINES)
} else {
gl.Begin(gl.QUAD_STRIP)
}
for j := 0; j <= slices; j++ {
lng := 2 * math.Pi * (float64(j-1) / float64(slices))
x := math.Cos(lng)
y := math.Sin(lng)
gl.Normal3f(float32(x*zr0), float32(y*zr0), float32(z0))
gl.Vertex3f(float32(x*zr0), float32(y*zr0), float32(z0))
gl.Normal3f(float32(x*zr1), float32(y*zr1), float32(z1))
gl.Vertex3f(float32(x*zr1), float32(y*zr1), float32(z1))
}
gl.End()
}
gl.EndList()
if ctx.wireframe {
ctx.spheresWireframe[slices] = l
} else {
ctx.spheresSolid[slices] = l
}
}
gl.CallList(l)
}