diff options
| -rw-r--r-- | grid.go | 16 |
1 files changed, 16 insertions, 0 deletions
@@ -162,6 +162,22 @@ func (g GridType) Wd(dataWd float64) float64 { return g.xm * dataWd } +// XY converts dataX and dataY, specified in logical data units, to the X and Y +// position on the current page. +func (g GridType) XY(dataX, dataY float64) (x, y float64) { + return g.xm*dataX + g.xb, g.ym*dataY + g.yb +} + +// Pos returns the point, in page units, indicated by the relative positions +// xRel and yRel. These are values between 0 and 1. xRel specifies the relative +// position between the grid's left and right edges. yRel specifies the +// relative position between the grid's bottom and top edges. +func (g GridType) Pos(xRel, yRel float64) (x, y float64) { + x = g.w*xRel + g.x + y = g.h*(1-yRel) + g.y + return +} + // X converts dataX, specified in logical data units, to the X position on the // current page. func (g GridType) X(dataX float64) float64 { |