func Ellipse(x, y, a, b int, n, f bool) {
//
x0, y0 := C.int(x-a), C.int(y-b)
if f {
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
} // C.GXcopyInverted ?
if !xxb {
C.XFillArc(display, C.Drawable(window), graphicsContext, C.int(x0), C.int(y0), C.uint(2*a), C.uint(2*b), 0, 64*360)
}
C.XFillArc(display, C.Drawable(pixmap), graphicsContext, C.int(x0), C.int(y0), C.uint(2*a), C.uint(2*b), 0, 64*360)
} else {
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
}
if !xxb {
C.XDrawArc(display, C.Drawable(window), graphicsContext, C.int(x0), C.int(y0), C.uint(2*a), C.uint(2*b), 0, 64*360)
}
C.XDrawArc(display, C.Drawable(pixmap), graphicsContext, C.int(x0), C.int(y0), C.uint(2*a), C.uint(2*b), 0, 64*360)
}
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
func Invert(x, y, x1, y1 uint) {
//
if x > x1 || y > y1 {
} // desaster
C.XSetFunction(display, graphicsContext, C.GXinvert)
if !xxb {
C.XFillRectangle(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y), C.uint(x1-x+1), C.uint(y1-y+1))
}
C.XFillRectangle(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y), C.uint(x1-x+1), C.uint(y1-y+1))
C.XSetFunction(display, graphicsContext, C.GXcopy)
C.XFlush(display)
}
func Line(x, y, x1, y1 int, n bool) {
//
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
}
if !xxb {
C.XDrawLine(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y), C.int(x1), C.int(y1))
}
C.XDrawLine(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y), C.int(x1), C.int(y1))
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
func Point(x, y int, n bool) {
//
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
}
if !xxb {
C.XDrawPoint(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y))
}
C.XDrawPoint(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y))
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
func PolygonFull(X, Y []int, n bool) {
//
l := len(X)
if len(Y) != l {
return
}
p := make([]C.XPoint, l)
for i := 0; i < l; i++ {
p[i].x, p[i].y = C.short(X[i]), C.short(Y[i])
}
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopyInverted)
}
if !xxb {
C.XFillPolygon(display, C.Drawable(window), graphicsContext, &p[0], C.int(l), C.Convex, C.CoordModeOrigin)
}
C.XFillPolygon(display, C.Drawable(pixmap), graphicsContext, &p[0], C.int(l), C.Convex, C.CoordModeOrigin)
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
func Segments(X, Y, X1, Y1 []int, n bool) {
//
l := len(X)
if len(Y) != l {
return
}
s := make([]C.XSegment, l)
for i := 0; i < l; i++ {
s[i].x1, s[i].y1, s[i].x2, s[i].y2 = C.short(X[i]), C.short(Y[i]), C.short(X1[i]), C.short(Y1[i])
}
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
}
if !xxb {
C.XDrawSegments(display, C.Drawable(window), graphicsContext, &s[0], C.int(l))
}
C.XDrawSegments(display, C.Drawable(pixmap), graphicsContext, &s[0], C.int(l))
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
func Rectangle(x, y, w, h int, n, f bool) {
//
if f {
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
} // C.GXcopyInverted ?
if !xxb {
C.XFillRectangle(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y), C.uint(w), C.uint(h))
}
C.XFillRectangle(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y), C.uint(w), C.uint(h))
} else {
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
}
if !xxb {
C.XDrawRectangle(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y), C.uint(w), C.uint(h))
}
C.XDrawRectangle(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y), C.uint(w), C.uint(h))
}
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
func WriteInvert(s string, x, y int, t bool) {
//
C.XSetFunction(display, graphicsContext, C.GXinvert)
Write(s, x, y, t)
C.XSetFunction(display, graphicsContext, C.GXcopy)
}