| library(grid) |
| |
| # Unit conversions |
| stopifnot(round(convertX(unit(1, "inches"), "inches", valueOnly=TRUE) - 1, |
| digits=5) == 0) |
| stopifnot(round(convertX(unit(2.54, "cm"), "inches", valueOnly=TRUE) - 1, |
| digits=5) == 0) |
| stopifnot(round(convertX(unit(25.4, "mm"), "inches", valueOnly=TRUE) - 1, |
| digits=5) == 0) |
| stopifnot(round(convertX(unit(72.27, "points"), "inches", valueOnly=TRUE) - 1, |
| digits=5) == 0) |
| stopifnot(round(convertX(unit(1/12*72.27, "picas"), "inches", |
| valueOnly=TRUE) - 1, digits=5) == 0) |
| stopifnot(round(convertX(unit(72, "bigpts"), "inches", valueOnly=TRUE) - 1, |
| digits=5) == 0) |
| stopifnot(round(convertX(unit(1157/1238*72.27, "dida"), "inches", |
| valueOnly=TRUE) - 1, digits=5) == 0) |
| stopifnot(round(convertX(unit(1/12*1157/1238*72.27, "cicero"), "inches", |
| valueOnly=TRUE) - 1, digits=5) == 0) |
| stopifnot(round(convertX(unit(65536*72.27, "scaledpts"), "inches", |
| valueOnly=TRUE) - 1, digits=5) == 0) |
| stopifnot(round(convertX(unit(1/2.54, "inches"), "cm", valueOnly=TRUE) - 1, |
| digits=5) == 0) |
| stopifnot(round(convertX(unit(1/25.4, "inches"), "mm", valueOnly=TRUE) - 1, |
| digits=5) == 0) |
| stopifnot(round(convertX(unit(1/72.27, "inches"), "points", |
| valueOnly=TRUE) - 1, digits=5) == 0) |
| stopifnot(round(convertX(unit(1/(1/12*72.27), "inches"), "picas", |
| valueOnly=TRUE) - 1, digits=5) == 0) |
| stopifnot(round(convertX(unit(1/72, "inches"), "bigpts", valueOnly=TRUE) - 1, |
| digits=5) == 0) |
| stopifnot(round(convertX(unit(1/(1157/1238*72.27), "inches"), "dida", |
| valueOnly=TRUE) - 1, digits=5) == 0) |
| stopifnot(round(convertX(unit(1/(1/12*1157/1238*72.27), "inches"), "cicero", |
| valueOnly=TRUE) - 1, digits=5) == 0) |
| stopifnot(round(convertX(unit(1/(65536*72.27), "inches"), "scaledpts", |
| valueOnly=TRUE) - 1, digits=5) == 0) |
| |
| pushViewport(viewport(width=unit(1, "inches"), |
| height=unit(2, "inches"), |
| xscale=c(0, 1), |
| yscale=c(1, 3))) |
| ## Location versus dimension |
| stopifnot(round(convertY(unit(2, "native"), "inches", valueOnly=TRUE) - |
| 1, digits=5) == 0) |
| stopifnot(round(convertHeight(unit(2, "native"), "inches", valueOnly=TRUE) - |
| 2, digits=5) == 0) |
| ## From "x" to "y" (the conversion is via "inches") |
| stopifnot(round(convertUnit(unit(1, "native"), "native", |
| axisFrom="x", axisTo="y", valueOnly=TRUE) - |
| 2, digits=5) == 0) |
| ## Convert several values at once |
| stopifnot(all(round(convertX(unit(c(0.5, 2.54), c("npc", "cm")), |
| c("inches", "native"), valueOnly=TRUE) - |
| c(0.5, 1), digits=5) == 0)) |
| popViewport() |
| |
| # packing a frame inside a frame |
| fg <- frameGrob() |
| fg <- packGrob(fg, textGrob("Hi there")) |
| |
| fg2 <- frameGrob() |
| fg2 <- packGrob(fg2, fg) |
| fg2 <- packGrob(fg2, rectGrob(), side="bottom") |
| fg2 <- packGrob(fg2, rectGrob(height=unit(1, "inches")), side="top") |
| |
| stopifnot(convertHeight(fg2$framevp$layout$heights, "inches", |
| valueOnly=TRUE)[2] < 1) |
| |
| # Regression tests for: |
| |
| # A: grob[X|Y|Width|Height] |
| |
| # B: grid.[circle|lines|segments|rect|polygon|text|xspline|points] |
| |
| # C: at angles seq(0, 360, 45)[-1] |
| |
| # D: single AND multiple output |
| |
| # In each casem, set up a situation where the answer is (easily) known, |
| # then compare the numeric answer |
| |
| test <- function(x, y) { |
| on.exit(cat(paste("x =", x, " ; y =", y, "\n"))) |
| stopifnot(isTRUE(all.equal(x, y))) |
| } |
| |
| testX <- function(x1, x2) { |
| test(convertX(x1, "inches", valueOnly=TRUE), |
| convertX(x2, "inches", valueOnly=TRUE)) |
| } |
| |
| testY <- function(y1, y2) { |
| test(convertY(y1, "inches", valueOnly=TRUE), |
| convertY(y2, "inches", valueOnly=TRUE)) |
| } |
| |
| testWidth <- function(w1, w2) { |
| test(convertWidth(w1, "inches", valueOnly=TRUE), |
| convertWidth(w2, "inches", valueOnly=TRUE)) |
| } |
| |
| testHeight <- function(h1, h2) { |
| test(convertHeight(h1, "inches", valueOnly=TRUE), |
| convertHeight(h2, "inches", valueOnly=TRUE)) |
| } |
| |
| ######## |
| # CIRCLE |
| ######## |
| # A = X; B = circle; C = ALL; D = BOTH |
| for (theta in seq(0, 360, 45)[-1]) { |
| testX(grobX(circleGrob(r=unit(.5, "inches")), theta), |
| unit(.5, "npc") + cos(theta/180*pi)*unit(.5, "inches")) |
| # Bounding box is 1" by 1" |
| testX(grobX(circleGrob(x=unit(.5, "npc") + unit(c(-.25, .25), "inches"), |
| y=unit(.5, "npc") + unit(c(-.25, .25), "inches"), |
| r=unit(.25, "inches")), |
| theta), |
| switch(as.character(theta), |
| "360"=, "315"=, |
| "45"=unit(.5, "npc") + unit(.5, "inches"), |
| "180"=, "225"=, |
| "135"=unit(.5, "npc") - unit(.5, "inches"), |
| "90"=, |
| "270"=unit(.5, "npc"))) |
| } |
| |
| # A = Y; B = circle; C = ALL; D = BOTH |
| for (theta in seq(0, 360, 45)[-1]) { |
| testY(grobY(circleGrob(r=unit(.5, "inches")), theta), |
| unit(.5, "npc") + sin(theta/180*pi)*unit(.5, "inches")) |
| # Bounding box is 1" by 1" |
| testY(grobY(circleGrob(x=unit(.5, "npc") + unit(c(-.25, .25), "inches"), |
| y=unit(.5, "npc") + unit(c(-.25, .25), "inches"), |
| r=unit(.25, "inches")), |
| theta), |
| switch(as.character(theta), |
| "90"=, "135"=, |
| "45"=unit(.5, "npc") + unit(.5, "inches"), |
| "270"=, "315"=, |
| "225"=unit(.5, "npc") - unit(.5, "inches"), |
| "180"=, |
| "360"=unit(.5, "npc"))) |
| } |
| |
| # A = Width; B = circle; C = ALL; D = BOTH |
| testWidth(grobWidth(circleGrob(r=unit(.5, "inches"))), |
| unit(1, "inches")) |
| testWidth(grobWidth(circleGrob(x=unit(.5, "npc") + |
| unit(c(-.25, .25), "inches"), |
| y=unit(.5, "npc") + |
| unit(c(-.25, .25), "inches"), |
| r=unit(.25, "inches"))), |
| unit(1, "inches")) |
| |
| # A = Height; B = circle; C = ALL; D = BOTH |
| testHeight(grobHeight(circleGrob(r=unit(.5, "inches"))), |
| unit(1, "inches")) |
| testHeight(grobHeight(circleGrob(x=unit(.5, "npc") + |
| unit(c(-.25, .25), "inches"), |
| y=unit(.5, "npc") + |
| unit(c(-.25, .25), "inches"), |
| r=unit(.25, "inches"))), |
| unit(1, "inches")) |
| |
| ######## |
| # RECT |
| ######## |
| # A = X; B = rect; C = ALL; D = BOTH |
| for (theta in seq(0, 360, 45)[-1]) { |
| testX(grobX(rectGrob(width=unit(1, "inches"), |
| height=unit(1, "inches")), theta), |
| switch(as.character(theta), |
| "360"=, "315"=, |
| "45"=unit(.5, "npc") + unit(.5, "inches"), |
| "180"=, "225"=, |
| "135"=unit(.5, "npc") - unit(.5, "inches"), |
| "90"=, |
| "270"=unit(.5, "npc"))) |
| # Bounding box is 1" by 1" |
| testX(grobX(rectGrob(x=unit(.5, "npc") + unit(c(-.25, .25), "inches"), |
| y=unit(.5, "npc") + unit(c(-.25, .25), "inches"), |
| width=unit(.5, "inches"), |
| height=unit(.5, "inches")), |
| theta), |
| switch(as.character(theta), |
| "360"=, "315"=, |
| "45"=unit(.5, "npc") + unit(.5, "inches"), |
| "180"=, "225"=, |
| "135"=unit(.5, "npc") - unit(.5, "inches"), |
| "90"=, |
| "270"=unit(.5, "npc"))) |
| } |
| |
| # A = Y; B = rect; C = ALL; D = BOTH |
| for (theta in seq(0, 360, 45)[-1]) { |
| testY(grobY(rectGrob(width=unit(1, "inches"), |
| height=unit(1, "inches")), theta), |
| switch(as.character(theta), |
| "90"=, "135"=, |
| "45"=unit(.5, "npc") + unit(.5, "inches"), |
| "270"=, "315"=, |
| "225"=unit(.5, "npc") - unit(.5, "inches"), |
| "180"=, |
| "360"=unit(.5, "npc"))) |
| # Bounding box is 1" by 1" |
| testY(grobY(rectGrob(x=unit(.5, "npc") + unit(c(-.25, .25), "inches"), |
| y=unit(.5, "npc") + unit(c(-.25, .25), "inches"), |
| width=unit(.5, "inches"), |
| height=unit(.5, "inches")), |
| theta), |
| switch(as.character(theta), |
| "90"=, "135"=, |
| "45"=unit(.5, "npc") + unit(.5, "inches"), |
| "270"=, "315"=, |
| "225"=unit(.5, "npc") - unit(.5, "inches"), |
| "180"=, |
| "360"=unit(.5, "npc"))) |
| } |
| |
| # A = Width; B = rect; C = ALL; D = BOTH |
| testWidth(grobWidth(rectGrob(width=unit(1, "inches"), |
| height=unit(1, "inches"))), |
| unit(1, "inches")) |
| testWidth(grobWidth(rectGrob(x=unit(.5, "npc") + |
| unit(c(-.25, .25), "inches"), |
| y=unit(.5, "npc") + |
| unit(c(-.25, .25), "inches"), |
| width=unit(.5, "inches"), |
| height=unit(.5, "inches"))), |
| unit(1, "inches")) |
| |
| # A = Height; B = rect; C = ALL; D = BOTH |
| testHeight(grobHeight(rectGrob(width=unit(1, "inches"), |
| height=unit(1, "inches"))), |
| unit(1, "inches")) |
| testHeight(grobHeight(rectGrob(x=unit(.5, "npc") + |
| unit(c(-.25, .25), "inches"), |
| y=unit(.5, "npc") + |
| unit(c(-.25, .25), "inches"), |
| width=unit(.5, "inches"), |
| height=unit(.5, "inches"))), |
| unit(1, "inches")) |
| |
| ######## |
| # polygon |
| # Four locations in a diamond |
| ######## |
| # A = X; B = polygon; C = ALL; D = BOTH |
| for (theta in seq(0, 360, 45)[-1]) { |
| testX(grobX(polygonGrob(x=unit(.5, "npc") + |
| unit(c(-.5, 0, .5, 0), "inches"), |
| y=unit(.5, "npc") + |
| unit(c(0, -.5, 0, .5), "inches")), |
| theta), |
| switch(as.character(theta), |
| "45"=, |
| "315"=unit(.5, "npc") + unit(.25, "inches"), |
| "90"=, |
| "270"=unit(.5, "npc"), |
| "135"=, |
| "225"=unit(.5, "npc") - unit(.25, "inches"), |
| "180"=unit(.5, "npc") - unit(.5, "inches"), |
| "360"=unit(.5, "npc") + unit(.5, "inches"))) |
| # NOTE: for polygons, even if there are multiple polygons, |
| # we still produce edge of hull for ALL points |
| testX(grobX(polygonGrob(x=unit(.5, "npc") + |
| unit(c(-.5, -.25, 0, -.25, |
| 0, .25, .5, .25), "inches"), |
| y=unit(.5, "npc") + |
| unit(c(-.25, -.5, -.25, 0, |
| .25, 0, .25, .5), "inches"), |
| id=rep(1:2, each=4)), |
| theta), |
| switch(as.character(theta), |
| "45"=unit(.5, "npc") + unit(.375, "inches"), |
| "90"=unit(.5, "npc"), |
| "135"=unit(.5, "npc") - unit(.125, "inches"), |
| "180"=unit(.5, "npc") - unit(.25, "inches"), |
| "225"=unit(.5, "npc") - unit(.375, "inches"), |
| "270"=unit(.5, "npc"), |
| "315"=unit(.5, "npc") + unit(.125, "inches"), |
| "360"=unit(.5, "npc") + unit(.25, "inches"))) |
| } |
| |
| # A = Y; B = polygon; C = ALL; D = BOTH |
| for (theta in seq(0, 360, 45)[-1]) { |
| testY(grobY(polygonGrob(x=unit(.5, "npc") + |
| unit(c(-.5, 0, .5, 0), "inches"), |
| y=unit(.5, "npc") + |
| unit(c(0, -.5, 0, .5), "inches")), |
| theta), |
| switch(as.character(theta), |
| "45"=, |
| "135"=unit(.5, "npc") + unit(.25, "inches"), |
| "90"=unit(.5, "npc") + unit(.5, "inches"), |
| "180"=, |
| "360"=unit(.5, "npc"), |
| "225"=, |
| "315"=unit(.5, "npc") - unit(.25, "inches"), |
| "270"=unit(.5, "npc") - unit(.5, "inches"))) |
| # NOTE: for polygons, even if there are multiple polygons, |
| # we still produce edge of hull for ALL points |
| testY(grobY(polygonGrob(x=unit(.5, "npc") + |
| unit(c(-.5, -.25, 0, -.25, |
| 0, .25, .5, .25), "inches"), |
| y=unit(.5, "npc") + |
| unit(c(-.25, -.5, -.25, 0, |
| .25, 0, .25, .5), "inches"), |
| id=rep(1:2, each=4)), |
| theta), |
| switch(as.character(theta), |
| "45"=unit(.5, "npc") + unit(.375, "inches"), |
| "90"=unit(.5, "npc") + unit(.25, "inches"), |
| "135"=unit(.5, "npc") + unit(.125, "inches"), |
| "180"=unit(.5, "npc"), |
| "225"=unit(.5, "npc") - unit(.375, "inches"), |
| "270"=unit(.5, "npc") - unit(.25, "inches"), |
| "315"=unit(.5, "npc") - unit(.125, "inches"), |
| "360"=unit(.5, "npc"))) |
| } |
| |
| # A = Width; B = polygon; C = ALL; D = BOTH |
| testWidth(grobWidth(polygonGrob(x=unit(.5, "npc") + |
| unit(c(-.5, 0, .5, 0), "inches"), |
| y=unit(.5, "npc") + |
| unit(c(0, -.5, 0, .5), "inches"))), |
| unit(1, "inches")) |
| testWidth(grobWidth(polygonGrob(x=unit(.5, "npc") + |
| unit(c(-.5, -.25, 0, -.25, |
| 0, .25, .5, .25), "inches"), |
| y=unit(.5, "npc") + |
| unit(c(-.25, -.5, -.25, 0, |
| .25, 0, .25, .5), "inches"), |
| id=rep(1:2, each=4))), |
| unit(1, "inches")) |
| |
| # A = Height; B = polygon; C = ALL; D = BOTH |
| testHeight(grobHeight(polygonGrob(x=unit(.5, "npc") + |
| unit(c(-.5, 0, .5, 0), "inches"), |
| y=unit(.5, "npc") + |
| unit(c(0, -.5, 0, .5), "inches"))), |
| unit(1, "inches")) |
| testHeight(grobHeight(polygonGrob(x=unit(.5, "npc") + |
| unit(c(-.5, -.25, 0, -.25, |
| 0, .25, .5, .25), "inches"), |
| y=unit(.5, "npc") + |
| unit(c(-.25, -.5, -.25, 0, |
| .25, 0, .25, .5), "inches"), |
| id=rep(1:2, each=4))), |
| unit(1, "inches")) |
| |
| ######## |
| # TEXT |
| ######## |
| # A = X; B = text; C = ALL; D = BOTH |
| str <- "testcase" |
| strw <- stringWidth(str) |
| strh <- stringHeight(str) |
| for (theta in seq(0, 360, 45)[-1]) { |
| testX(grobX(textGrob(str), theta), |
| switch(as.character(theta), |
| "360"=unit(.5, "npc") + 0.5*strw, |
| "135"=, |
| "45"=unit(.5, "npc") + 1/tan(theta/180*pi)*0.5*strh, |
| "315"=, |
| "225"=unit(.5, "npc") - 1/tan(theta/180*pi)*0.5*strh, |
| "180"=unit(.5, "npc") - 0.5*strw, |
| "90"=, |
| "270"=unit(.5, "npc"))) |
| # Bounding box is 1" by 1" |
| testX(grobX(textGrob(str, |
| x=unit(.5, "npc") + unit(c(-.5, .5), "inches"), |
| y=unit(.5, "npc") + unit(c(-.5, .5), "inches"), |
| hjust=c(0, 1), vjust=c(0, 1)), |
| theta), |
| switch(as.character(theta), |
| "360"=, "315"=, |
| "45"=unit(.5, "npc") + unit(.5, "inches"), |
| "180"=, "225"=, |
| "135"=unit(.5, "npc") - unit(.5, "inches"), |
| "90"=, |
| "270"=unit(.5, "npc"))) |
| } |
| |
| # A = Y; B = text; C = ALL; D = BOTH |
| for (theta in seq(0, 360, 45)[-1]) { |
| testY(grobY(textGrob(str), theta), |
| switch(as.character(theta), |
| "90"=, "135"=, |
| "45"=unit(.5, "npc") + 0.5*strh, |
| "270"=, "315"=, |
| "225"=unit(.5, "npc") - 0.5*strh, |
| "180"=, |
| "360"=unit(.5, "npc"))) |
| # Bounding box is 1" by 1" |
| testY(grobY(textGrob(str, |
| x=unit(.5, "npc") + unit(c(-.5, .5), "inches"), |
| y=unit(.5, "npc") + unit(c(-.5, .5), "inches"), |
| hjust=c(0, 1), vjust=c(0, 1)), |
| theta), |
| switch(as.character(theta), |
| "90"=, "135"=, |
| "45"=unit(.5, "npc") + unit(.5, "inches"), |
| "270"=, "315"=, |
| "225"=unit(.5, "npc") - unit(.5, "inches"), |
| "180"=, |
| "360"=unit(.5, "npc"))) |
| } |
| |
| # A = Width; B = text; C = ALL; D = BOTH |
| testWidth(grobWidth(textGrob(str)), |
| strw) |
| testWidth(grobWidth(textGrob(str, |
| x=unit(.5, "npc") + unit(c(-.5, .5), "inches"), |
| y=unit(.5, "npc") + unit(c(-.5, .5), "inches"), |
| hjust=c(0, 1), vjust=c(0, 1))), |
| unit(1, "inches")) |
| |
| # A = Height; B = text; C = ALL; D = BOTH |
| testHeight(grobHeight(textGrob(str)), |
| strh) |
| testHeight(grobHeight(textGrob(str, |
| x=unit(.5, "npc") + unit(c(-.5, .5), "inches"), |
| y=unit(.5, "npc") + unit(c(-.5, .5), "inches"), |
| hjust=c(0, 1), vjust=c(0, 1))), |
| unit(1, "inches")) |
| |
| # Determining unit lengths |
| stopifnot(length(unit.c(unit(1, "npc") + unit(1, "cm"), unit(2, "cm"))) == 2) |
| stopifnot(length(unit.c(unit(1, "npc") + unit(1, "cm"), unit(2:4, "cm"))) == 4) |
| stopifnot(length(unit.c(unit(1:3, "npc") + unit(1, "cm"), unit(2:4, "cm"))) == 6) |
