func (cube *Cube) Render() {
x, y, z := cube.Position.X, cube.Position.Y, cube.Position.Z
gl.Begin(gl.QUADS)
gl.Color3d(0.5-(x/50), 0.5-(y/50), 0.5-(z/50))
// Front Side
gl.TexCoord2f(0, 0)
gl.Vertex3d(x-0.5, y-0.5, z+0.5)
gl.TexCoord2f(1, 0)
gl.Vertex3d(x+0.5, y-0.5, z+0.5)
gl.TexCoord2f(1, 1)
gl.Vertex3d(x+0.5, y+0.5, z+0.5)
gl.TexCoord2f(0, 1)
gl.Vertex3d(x-0.5, y+0.5, z+0.5)
// Left Side
gl.Color3d(0.5-(x/20), 0.5-(y/20), 0.5-(z/20))
gl.TexCoord2f(0, 0)
gl.Vertex3d(x-0.5, y-0.5, z-0.5)
gl.TexCoord2f(1, 0)
gl.Vertex3d(x-0.5, y-0.5, z+0.5)
gl.TexCoord2f(1, 1)
gl.Vertex3d(x-0.5, y+0.5, z+0.5)
gl.TexCoord2f(0, 1)
gl.Vertex3d(x-0.5, y+0.5, z-0.5)
gl.End()
}
func DrawEntity(en Entity) {
x := en.Xpos
y := en.Ypos
r := en.Rot
s := en.Size
col := en.Colour
switch col {
case "grey":
gl.Color3d(0.5, 0.5, 0.5)
case "red":
gl.Color3d(1, 0, 0)
case "green":
gl.Color3d(0, 1, 0)
case "blue":
gl.Color3d(0, 0, 1)
case "lblue":
gl.Color3d(0.3, 0.3, 1)
case "orange":
gl.Color3d(1, 0.5, 0)
case "yellow":
gl.Color3d(1, 1, 0)
case "purple":
gl.Color3d(1, 0, 1)
case "white":
gl.Color3d(1, 1, 1)
default:
gl.Color3d(1, 1, 1)
}
gl.PushMatrix()
gl.Translated(x, y, 0)
gl.Scaled(s, s, s)
//gl.Rotated(r*180/math.Pi, 0, 0, 1)
gl.Rotated(r, 0, 0, 1)
enx := [3]float64{-0.7, 0.7, 0}
eny := [3]float64{1, 1, -1}
//in OpenGL 3.2, the vertices below would be stored on the GPU
//so all you would need to do is say DrawShape(A) or something
gl.Begin(gl.TRIANGLES)
gl.Vertex3d(enx[0], eny[0], 0)
gl.Vertex3d(enx[1], eny[1], 0)
gl.Vertex3d(enx[2], eny[2], 0)
gl.End()
gl.PopMatrix()
}
// Draws lines of unit length along the X, Y, Z axis in R, G, B
func DrawAxes() {
gl.Begin(gl.LINES)
gl.Color3d(1, 0, 0)
gl.Vertex3d(0, 0, 0)
gl.Vertex3d(1, 0, 0)
gl.Color3d(0, 1, 0)
gl.Vertex3d(0, 0, 0)
gl.Vertex3d(0, 1, 0)
gl.Color3d(0, 0, 1)
gl.Vertex3d(0, 0, 0)
gl.Vertex3d(0, 0, 1)
gl.End()
}
func DrawSizeableTri(Tr SizeableTri) {
ax := Tr.Ax
bx := Tr.Bx
cx := Tr.Cx
ay := Tr.Ay
by := Tr.By
cy := Tr.Cy
col := Tr.Colour
switch col {
case "grey":
gl.Color3d(0.5, 0.5, 0.5)
case "red":
gl.Color3d(1, 0, 0)
case "green":
gl.Color3d(0, 1, 0)
case "blue":
gl.Color3d(0, 0, 1)
case "lblue":
gl.Color3d(0.3, 0.3, 1)
case "orange":
gl.Color3d(1, 0.5, 0)
case "yellow":
gl.Color3d(1, 1, 0)
case "purple":
gl.Color3d(1, 0, 1)
default:
gl.Color3d(1, 1, 1)
}
gl.PushMatrix()
// gl.Translated(x, y, 0)
// gl.Scaled(s, s, s)
// gl.Rotated(r, 0, 0, 1)
gl.Begin(gl.TRIANGLES)
gl.Vertex3d(ax, ay, 0)
gl.Vertex3d(bx, by, 0)
gl.Vertex3d(cx, cy, 0)
gl.End()
gl.PopMatrix()
}
func DrawRTri(Red float64) {
gl.ClearColor(0.2, 0.2, 0.2, 1)
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.Color3d(game.Red, 0, 0)
gl.Begin(gl.TRIANGLES)
gl.Vertex3d(0, 0, 0)
gl.Vertex3d(0, 1, 0)
gl.Vertex3d(1, 1, 0)
gl.Vertex3d(1, 0, 0)
gl.End()
}
func drawFrame(screenData *Screen) {
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Begin(gl.POINTS)
for i := 0; i < SCREEN_WIDTH; i++ {
for j := 0; j < SCREEN_HEIGHT; j++ {
var pixel Color = screenData[i][j]
gl.Color3d(pixel.Red, pixel.Green, pixel.Blue)
gl.Vertex2i(i, j)
}
}
gl.End()
}
func (explosion *Explosion) Draw() {
if explosion.IsAlive() {
for l, _ := range explosion.Lines {
gl.Begin(gl.LINES)
for v, _ := range explosion.Lines[l].Shape.Vectors {
gl.Color3d(explosion.Lines[l].Shape.Colors[v].R, explosion.Lines[l].Shape.Colors[v].G, explosion.Lines[l].Shape.Colors[v].B)
explosion.Lines[l].GlVertex2d(explosion.Lines[l].Shape.Vectors[v])
}
gl.End()
}
}
}
func (ent *Entity) Draw(invertColors bool) {
if ent.IsAlive() {
//gl.LoadIdentity()
gl.Begin(gl.POLYGON)
for v := range ent.Shape.Vectors {
if invertColors {
ent.Color3d(ent.Shape.Colors[v])
} else {
gl.Color3d(ent.Shape.Colors[v].R, ent.Shape.Colors[v].G, ent.Shape.Colors[v].B)
}
ent.GlVertex2d(ent.Shape.Vectors[v])
}
gl.End()
}
}
// Used in classic render mode.
// Defines vertex colors.
func (a *Attr) color(i int) {
i *= a.size
switch a.size {
case 3:
switch v := a.data.(type) {
case []int8:
gl.Color3b(v[i], v[i+1], v[i+2])
case []uint8:
gl.Color3ub(v[i], v[i+1], v[i+2])
case []int16:
gl.Color3s(v[i], v[i+1], v[i+2])
case []int32:
gl.Color3i(int(v[i]), int(v[i+1]), int(v[i+2]))
case []float32:
gl.Color3f(v[i], v[i+1], v[i+2])
case []float64:
gl.Color3d(v[i], v[i+1], v[i+2])
}
case 4:
switch v := a.data.(type) {
case []int8:
gl.Color4b(v[i], v[i+1], v[i+2], v[i+3])
case []uint8:
gl.Color4ub(v[i], v[i+1], v[i+2], v[i+3])
case []int16:
gl.Color4s(v[i], v[i+1], v[i+2], v[i+3])
case []int32:
gl.Color4i(int(v[i]), int(v[i+1]), int(v[i+2]), int(v[i+3]))
case []float32:
gl.Color4f(v[i], v[i+1], v[i+2], v[i+3])
case []float64:
gl.Color4d(v[i], v[i+1], v[i+2], v[i+3])
}
}
}
func (ent *Entity) Color3d(c Color) {
gl.Color3d(Colorize(c.R), Colorize(c.G), Colorize(c.B))
}
// this is silly, but oh well.. ;)
func drawCharacter(x, y, size float64, color Color, char string) {
//gl.LoadIdentity()
gl.Begin(gl.LINES)
gl.Color3d(Colorize(color.R), Colorize(color.G), Colorize(color.B))
c := Char{x, y, size}
switch char {
case "0":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 0)
c.glVertex2d(4, 0)
c.glVertex2d(0, 0)
c.glVertex2d(2, 4)
c.glVertex2d(2, 5)
case "1":
c.glVertex2d(2, 0)
c.glVertex2d(2, 8)
c.glVertex2d(2, 8)
c.glVertex2d(0, 6)
case "2":
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 4)
c.glVertex2d(4, 4)
c.glVertex2d(0, 4)
c.glVertex2d(0, 4)
c.glVertex2d(0, 0)
c.glVertex2d(0, 0)
c.glVertex2d(4, 0)
case "3":
c.glVertex2d(4, 0)
c.glVertex2d(4, 8)
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(0, 4)
c.glVertex2d(4, 4)
c.glVertex2d(0, 0)
c.glVertex2d(4, 0)
case "4":
c.glVertex2d(0, 8)
c.glVertex2d(0, 4)
c.glVertex2d(0, 4)
c.glVertex2d(4, 4)
c.glVertex2d(4, 8)
c.glVertex2d(4, 0)
case "6":
c.glVertex2d(0, 8)
c.glVertex2d(0, 0)
c.glVertex2d(0, 0)
c.glVertex2d(4, 0)
c.glVertex2d(4, 0)
c.glVertex2d(4, 4)
c.glVertex2d(4, 4)
c.glVertex2d(0, 4)
case "7":
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 0)
case "8":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 0)
c.glVertex2d(4, 0)
c.glVertex2d(0, 0)
c.glVertex2d(0, 4)
c.glVertex2d(4, 4)
case "9":
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 4)
c.glVertex2d(0, 4)
c.glVertex2d(4, 4)
case "A":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 0)
c.glVertex2d(0, 4)
c.glVertex2d(4, 4)
case "C":
c.glVertex2d(4, 8)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(0, 0)
c.glVertex2d(0, 0)
c.glVertex2d(4, 0)
case "D":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 0)
c.glVertex2d(3, 0)
c.glVertex2d(3, 0)
c.glVertex2d(4, 2)
c.glVertex2d(4, 2)
c.glVertex2d(4, 6)
c.glVertex2d(4, 6)
c.glVertex2d(3, 8)
c.glVertex2d(3, 8)
c.glVertex2d(0, 8)
case "E":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(0, 4)
c.glVertex2d(3, 4)
c.glVertex2d(0, 0)
c.glVertex2d(4, 0)
case "F":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(0, 4)
c.glVertex2d(3, 4)
case "G":
c.glVertex2d(4, 8)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(0, 0)
c.glVertex2d(0, 0)
c.glVertex2d(4, 0)
c.glVertex2d(4, 0)
c.glVertex2d(4, 4)
c.glVertex2d(4, 4)
c.glVertex2d(2, 4)
case "H":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 0)
c.glVertex2d(0, 4)
c.glVertex2d(4, 4)
case "I":
c.glVertex2d(2, 0)
c.glVertex2d(2, 8)
case "L":
c.glVertex2d(0, 8)
c.glVertex2d(0, 0)
c.glVertex2d(0, 0)
c.glVertex2d(4, 0)
case "M":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(2, 5)
c.glVertex2d(2, 5)
c.glVertex2d(4, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 0)
case "N":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(4, 0)
c.glVertex2d(4, 0)
c.glVertex2d(4, 8)
case "O":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 0)
c.glVertex2d(4, 0)
c.glVertex2d(0, 0)
case "P":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 4)
c.glVertex2d(4, 4)
c.glVertex2d(0, 4)
case "R":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 8)
c.glVertex2d(4, 4)
c.glVertex2d(4, 4)
c.glVertex2d(0, 4)
c.glVertex2d(2, 4)
c.glVertex2d(4, 0)
case "S", "5":
c.glVertex2d(4, 8)
c.glVertex2d(0, 8)
c.glVertex2d(0, 8)
c.glVertex2d(0, 4)
c.glVertex2d(0, 4)
c.glVertex2d(4, 4)
c.glVertex2d(4, 4)
c.glVertex2d(4, 0)
c.glVertex2d(4, 0)
c.glVertex2d(0, 0)
case "T":
c.glVertex2d(0, 8)
c.glVertex2d(4, 8)
c.glVertex2d(2, 8)
c.glVertex2d(2, 0)
case "U":
c.glVertex2d(0, 0)
c.glVertex2d(0, 8)
c.glVertex2d(0, 0)
c.glVertex2d(4, 0)
c.glVertex2d(4, 0)
c.glVertex2d(4, 8)
case "V":
c.glVertex2d(0, 8)
c.glVertex2d(2, 0)
c.glVertex2d(2, 0)
c.glVertex2d(4, 8)
case "W":
c.glVertex2d(0, 8)
c.glVertex2d(1, 0)
c.glVertex2d(1, 0)
c.glVertex2d(2, 3)
c.glVertex2d(2, 3)
c.glVertex2d(3, 0)
c.glVertex2d(3, 0)
c.glVertex2d(4, 8)
case "X":
c.glVertex2d(0, 8)
c.glVertex2d(4, 0)
c.glVertex2d(0, 0)
c.glVertex2d(4, 8)
case "Y":
c.glVertex2d(0, 8)
c.glVertex2d(2, 4)
c.glVertex2d(2, 4)
c.glVertex2d(4, 8)
c.glVertex2d(2, 4)
c.glVertex2d(2, 0)
case " ":
case "-":
c.glVertex2d(1, 4)
c.glVertex2d(3, 4)
case ":":
c.glVertex2d(1, 2)
c.glVertex2d(1, 3)
c.glVertex2d(1, 5)
c.glVertex2d(1, 6)
case "!":
c.glVertex2d(1, 0)
c.glVertex2d(1, 1)
c.glVertex2d(1, 3)
c.glVertex2d(1, 8)
}
gl.End()
}
func DrawLine(Ln Line) {
ax := Ln.Ax
ay := Ln.Ay
bx := Ln.Bx
by := Ln.By
col := Ln.Colour
switch col {
case "grey":
gl.Color3d(0.5, 0.5, 0.5)
case "red":
gl.Color3d(1, 0, 0)
case "green":
gl.Color3d(0, 1, 0)
case "blue":
gl.Color3d(0, 0, 1)
case "lblue":
gl.Color3d(0.3, 0.3, 1)
case "orange":
gl.Color3d(1, 0.5, 0)
case "yellow":
gl.Color3d(1, 1, 0)
case "purple":
gl.Color3d(1, 0, 1)
default:
gl.Color3d(1, 1, 1)
}
if ay != by {
gl.PushMatrix()
gl.Begin(gl.TRIANGLES)
gl.Vertex3d(ax-0.2, ay, 0)
gl.Vertex3d(ax+0.2, ay, 0)
gl.Vertex3d(ax-0.2, by, 0)
gl.End()
gl.PopMatrix()
gl.PushMatrix()
gl.Begin(gl.TRIANGLES)
gl.Vertex3d(ax+0.2, ay, 0)
gl.Vertex3d(ax+0.2, by, 0)
gl.Vertex3d(ax-0.2, by, 0)
gl.End()
gl.PopMatrix()
} else {
gl.PushMatrix()
gl.Begin(gl.TRIANGLES)
gl.Vertex3d(ax, ay+0.2, 0)
gl.Vertex3d(bx, by+0.2, 0)
gl.Vertex3d(bx, by-0.2, 0)
gl.End()
gl.PopMatrix()
gl.PushMatrix()
gl.Begin(gl.TRIANGLES)
gl.Vertex3d(ax, ay+0.2, 0)
gl.Vertex3d(ax, ay-0.2, 0)
gl.Vertex3d(bx, by-0.2, 0)
gl.End()
gl.PopMatrix()
}
}
