func (img *glImage) DrawColoredAtXY(x, y int, color [4]float32) {
// TODO have the state knwon globally somewhere so this does not need to be
// called all the time
gl.Enable(gl.TEXTURE_2D)
gl.BindTexture(gl.TEXTURE_2D, img.id)
gl.Begin(gl.QUADS)
gl.Color4f(color[0], color[1], color[2], color[3])
gl.TexCoord2f(img.left, img.top)
gl.Vertex2i(int32(x), int32(y))
gl.Color4f(color[0], color[1], color[2], color[3])
gl.TexCoord2f(img.right, img.top)
gl.Vertex2i(int32(x+img.Width), int32(y))
gl.Color4f(color[0], color[1], color[2], color[3])
gl.TexCoord2f(img.right, img.bottom)
gl.Vertex2i(int32(x+img.Width), int32(y+img.Height))
gl.Color4f(color[0], color[1], color[2], color[3])
gl.TexCoord2f(img.left, img.bottom)
gl.Vertex2i(int32(x), int32(y+img.Height))
gl.End()
}
func MakePolygon(points ...Vertex) Polygon {
gl.Begin(gl.POLYGON)
for _, p := range points {
gl.Vertex2i(p.X, p.Y)
}
return Polygon{}
}
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()
}
func main() {
runtime.LockOSThread()
if err := glfw.Init(); err != nil {
panic(err)
}
defer glfw.Terminate()
window, err := glfw.CreateWindow(800, 600, "fontstash example", nil, nil)
if err != nil {
panic(err)
}
window.MakeContextCurrent()
glfw.SwapInterval(1)
gl.Init()
stash := fontstash.New(512, 512)
clearSansRegular, err := stash.AddFont(filepath.Join("..", "ClearSans-Regular.ttf"))
if err != nil {
panic(err)
}
clearSansItalic, err := stash.AddFont(filepath.Join("..", "ClearSans-Italic.ttf"))
if err != nil {
panic(err)
}
clearSansBold, err := stash.AddFont(filepath.Join("..", "ClearSans-Bold.ttf"))
if err != nil {
panic(err)
}
droidJapanese, err := stash.AddFont(filepath.Join("..", "DroidSansJapanese.ttf"))
if err != nil {
panic(err)
}
gl.ClearColor(0.3, 0.3, 0.32, 1.)
for !window.ShouldClose() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Ortho(0, 800, 0, 600, -1, 1)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Disable(gl.DEPTH_TEST)
gl.Color4ub(255, 255, 255, 255)
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.Disable(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
gl.Vertex2i(0, -5)
gl.Vertex2i(5, -5)
gl.Vertex2i(5, -11)
gl.Vertex2i(0, -11)
gl.End()
sx := float64(100)
sy := float64(250)
stash.BeginDraw()
dx := sx
dy := sy
dx = stash.DrawText(clearSansRegular, 24, dx, dy, "The quick ", [4]float32{0, 0, 0, 1})
dx = stash.DrawText(clearSansItalic, 48, dx, dy, "brown ", [4]float32{1, 1, 0.5, 1})
dx = stash.DrawText(clearSansRegular, 24, dx, dy, "fox ", [4]float32{0, 1, 0.5, 1})
_, _, lh := stash.VMetrics(clearSansItalic, 24)
dx = sx
dy -= lh * 1.2
dx = stash.DrawText(clearSansItalic, 24, dx, dy, "jumps over ", [4]float32{0, 1, 1, 1})
dx = stash.DrawText(clearSansBold, 24, dx, dy, "the lazy ", [4]float32{1, 0, 1, 1})
dx = stash.DrawText(clearSansRegular, 24, dx, dy, "dog.", [4]float32{0, 1, 0, 1})
dx = sx
dy -= lh * 1.2
dx = stash.DrawText(clearSansRegular, 12, dx, dy, "Now is the time for all good men to come to the aid of the party.", [4]float32{0, 0, 1, 1})
_, _, lh = stash.VMetrics(clearSansItalic, 12)
dx = sx
dy -= lh * 1.2 * 2
dx = stash.DrawText(clearSansItalic, 18, dx, dy, "Ég get etið gler án þess að meiða mig.", [4]float32{1, 0, 0, 1})
_, _, lh = stash.VMetrics(clearSansItalic, 18)
dx = sx
dy -= lh * 1.2
stash.DrawText(droidJapanese, 18, dx, dy, "どこかに置き忘れた、サングラスと打ち明け話。", [4]float32{1, 1, 1, 1})
stash.EndDraw()
gl.Enable(gl.DEPTH_TEST)
window.SwapBuffers()
glfw.PollEvents()
}
}
func MakeRect(X, Y, Width, Height int32) Rect {
rect := Rect{X, Y, Width, Height, MakeColor(255, 255, 255), NumPropertySet{0, 0, 0, 0}}
x := rect.X
y := rect.Y
width := rect.X2
height := rect.Y2
radius := rect.BorderRadius.LEFT
//TODO edit corner radius builder to use NumPropertySet for each corner
if radius > 0 {
gl.Color4f(1, 0, 0, 0.5)
gl.Begin(gl.QUADS)
gl.Vertex2i(x+radius, y+height) //4
gl.Vertex2i(x+(width-radius), y+height) //5
gl.Vertex2i(x+(width-radius), y) //10
gl.Vertex2i(x+radius, y) //11
gl.End()
gl.Begin(gl.QUADS)
gl.Vertex2i(x, y+radius) //1
gl.Vertex2i(x, y+(height-radius)) //2
gl.Vertex2i(x+radius, y+(height-radius)) //3
gl.Vertex2i(x+radius, y+radius) //12
gl.End()
gl.Begin(gl.QUADS)
gl.Vertex2i(x+(width-radius), y+(height-radius)) //6
gl.Vertex2i(x+width, y+(height-radius)) //7
gl.Vertex2i(x+width, y+radius) //8
gl.Vertex2i(x+(width-radius), y+radius) //9
gl.End()
gl.Begin(gl.TRIANGLE_FAN)
orginx := x
orginy := y
x = orginx + radius
y = orginy + radius
//gl.Translatef(float32(-x), float32(-y), 0)
var triangleAmount = float64(48.0) //# of triangles used to draw circle
//GLfloat radius = 0.8f; //radius
twicePi := float64(0.5) * float64(3.14)
gl.Vertex2f(float32(x), float32(y)) // center of circle
for i := float64(144); i >= triangleAmount+48; i-- {
gl.Vertex2f(float32(float64(x)+(float64(radius)*Cos(i*twicePi/triangleAmount))), float32(float64(y)+(float64(radius)*Sin(i*twicePi/triangleAmount))))
}
gl.End()
y = orginy + height - radius
gl.Begin(gl.TRIANGLE_FAN)
gl.Vertex2f(float32(x), float32(y)) // center of circle
for i := float64(96); i >= triangleAmount; i-- {
gl.Vertex2f(float32(float64(x)+(float64(radius)*Cos(i*twicePi/triangleAmount))), float32(float64(y)+(float64(radius)*Sin(i*twicePi/triangleAmount))))
}
gl.End()
x = orginx + width - radius
gl.Begin(gl.TRIANGLE_FAN)
gl.Vertex2f(float32(x), float32(y)) // center of circle
for i := float64(0); i <= triangleAmount; i++ {
gl.Vertex2f(float32(float64(x)+(float64(radius)*Cos(i*twicePi/triangleAmount))), float32(float64(y)+(float64(radius)*Sin(i*twicePi/triangleAmount))))
}
gl.End()
y = orginy + radius
gl.Begin(gl.TRIANGLE_FAN)
gl.Vertex2f(float32(x), float32(y)) // center of circle
for i := float64(192); i >= triangleAmount+96; i-- {
gl.Vertex2f(float32(float64(x)+(float64(radius)*Cos(i*twicePi/triangleAmount))), float32(float64(y)+(float64(radius)*Sin(i*twicePi/triangleAmount))))
}
gl.End()
} else {
gl.Begin(gl.QUADS)
gl.Vertex2i(x, y)
gl.Vertex2i(x, y+height)
gl.Vertex2i(x+width, y+height)
gl.Vertex2i(x+width, y)
gl.End()
}
// if rect.Stroke.BOTTOM.Width < 1 || rect.Stroke.LEFT.Width < 1 || rect.Stroke.RIGHT.Width < 1 || rect.Stroke.TOP.Width < 1 {
// //BOTTOM
// if rect.Stroke.BOTTOM.Width < 1 {
// gl.Begin(gl.LINE)
// gl.Color4f(float32(float32(rect.Stroke.BOTTOM.Fill.R)*0.0039), float32(float32(rect.Stroke.BOTTOM.Fill.G)*0.0039), float32(float32(rect.Stroke.BOTTOM.Fill.B)*0.0039), float32(float32(rect.Stroke.BOTTOM.Fill.A)*0.0039))
// gl.Vertex2i(x, y+height)
// gl.Vertex2i(x+width, y+height)
// gl.End()
// } else if rect.Stroke.LEFT.Width < 1 {
// gl.Begin(gl.LINE)
// gl.Color4f(float32(float32(rect.Stroke.LEFT.Fill.R)*0.0039), float32(float32(rect.Stroke.LEFT.Fill.G)*0.0039), float32(float32(rect.Stroke.LEFT.Fill.B)*0.0039), float32(float32(rect.Stroke.LEFT.Fill.A)*0.0039))
// gl.Vertex2i(x, y)
// gl.Vertex2i(x, y+height)
// gl.End()
// } else if rect.Stroke.TOP.Width < 1 {
// gl.Begin(gl.LINE)
// gl.Color4f(float32(float32(rect.Stroke.TOP.Fill.R)*0.0039), float32(float32(rect.Stroke.TOP.Fill.G)*0.0039), float32(float32(rect.Stroke.TOP.Fill.B)*0.0039), float32(float32(rect.Stroke.TOP.Fill.A)*0.0039))
// gl.Vertex2i(x, y)
// gl.Vertex2i(x+width, y)
// gl.End()
// } else if rect.Stroke.RIGHT.Width < 1 {
// gl.Begin(gl.LINE)
// gl.Color4f(float32(float32(rect.Stroke.RIGHT.Fill.R)*0.0039), float32(float32(rect.Stroke.RIGHT.Fill.G)*0.0039), float32(float32(rect.Stroke.RIGHT.Fill.B)*0.0039), float32(float32(rect.Stroke.RIGHT.Fill.A)*0.0039))
// gl.Vertex2i(x+width, y)
// gl.Vertex2i(x+width, y+height)
// gl.End()
// }
// //LEFT
// //TOP
// //RIGHT
// gl.Begin(gl.LINES)
// gl.Vertex2i(x, y)
// gl.Vertex2i(x, y+height)
// gl.Vertex2i(x+width, y+height)
// gl.Vertex2i(x+width, y)
// }
return rect
}