本文整理汇总了Golang中golang.org/x/image/math/fixed.Point26_6.X方法的典型用法代码示例。如果您正苦于以下问题：Golang Point26_6.X方法的具体用法？Golang Point26_6.X怎么用？Golang Point26_6.X使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类golang.org/x/image/math/fixed.Point26_6的用法示例。
在下文中一共展示了Point26_6.X方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: DrawString
// DrawString draws s at p and returns p advanced by the text extent. The text
// is placed so that the left edge of the em square of the first character of s
// and the baseline intersect at p. The majority of the affected pixels will be
// above and to the right of the point, but some may be below or to the left.
// For example, drawing a string that starts with a 'J' in an italic font may
// affect pixels below and left of the point.
//
// p is a fixed.Point26_6 and can therefore represent sub-pixel positions.
func (c *Context) DrawString(s string, p fixed.Point26_6) (fixed.Point26_6, error) {
if c.f == nil {
return fixed.Point26_6{}, errors.New("freetype: DrawText called with a nil font")
}
prev, hasPrev := truetype.Index(0), false
for _, rune := range s {
index := c.f.Index(rune)
if hasPrev {
kern := c.f.Kern(c.scale, prev, index)
if c.hinting != font.HintingNone {
kern = (kern + 32) &^ 63
}
p.X += kern
}
advanceWidth, mask, offset, err := c.glyph(index, p)
if err != nil {
return fixed.Point26_6{}, err
}
p.X += advanceWidth
glyphRect := mask.Bounds().Add(offset)
dr := c.clip.Intersect(glyphRect)
if !dr.Empty() {
mp := image.Point{0, dr.Min.Y - glyphRect.Min.Y}
draw.DrawMask(c.dst, dr, c.src, image.ZP, mask, mp, draw.Over)
}
prev, hasPrev = index, true
}
return p, nil
}示例2: Advance
func (self rightToLeft) Advance(face font.Face, origin fixed.Point26_6, dot fixed.Point26_6, prev rune, char rune) (begin fixed.Point26_6, end fixed.Point26_6) {
if char == '\n' {
dot.X = origin.X
dot.Y += face.Metrics().Height
return dot, dot
}
if prev != 0 {
dot.X -= face.Kern(prev, char)
}
dot.X -= advance(face, char)
return dot, dot
}