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Implement symmetric text padding from edges #46

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Implement symmetric text padding from edges #46

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bcbf03f
Update text position with alignment
mkhuzaima Dec 14, 2024
4a7815d
Fix formatting
mkhuzaima Dec 14, 2024
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14 changes: 8 additions & 6 deletions stl/geometry/text.go
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@ type textRenderConfig struct {
contextWidth int
contextHeight int
fontSize float64
alignment gg.Align
}

// ImageConfig holds parameters for image rendering
Expand All @@ -36,9 +37,8 @@ type imageRenderConfig struct {
}

const (
imagePosition = 0.025
usernameOffset = -0.01
yearPosition = 0.77
imagePosition = 0.025
textPadding = 0.1 // 10%

defaultContextWidth = 800
defaultContextHeight = 200
Expand Down Expand Up @@ -69,7 +69,7 @@ func Create3DText(username string, year string, innerWidth, baseHeight float64)

usernameConfig := textRenderConfig{
renderConfig: renderConfig{
startX: innerWidth * usernameOffset,
startX: innerWidth * textPadding,
startY: -textDepthOffset / 2,
startZ: baseHeight * usernameZOffset,
voxelScale: textVoxelSize,
Expand All @@ -79,11 +79,12 @@ func Create3DText(username string, year string, innerWidth, baseHeight float64)
contextWidth: usernameContextWidth,
contextHeight: usernameContextHeight,
fontSize: usernameFontSize,
alignment: gg.AlignLeft,
}

yearConfig := textRenderConfig{
renderConfig: renderConfig{
startX: innerWidth * yearPosition,
startX: innerWidth*(1-textPadding) - 75,
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By chosing 75, It exaclty aligns with right side of the cuboid.

The number was chosen by hit-and-trial method.

startY: -textDepthOffset / 2,
startZ: baseHeight * yearZOffset,
voxelScale: textVoxelSize * 0.75,
Expand All @@ -93,6 +94,7 @@ func Create3DText(username string, year string, innerWidth, baseHeight float64)
contextWidth: yearContextWidth,
contextHeight: yearContextHeight,
fontSize: yearFontSize,
alignment: gg.AlignRight,
}

usernameTriangles, err := renderText(usernameConfig)
Expand Down Expand Up @@ -129,7 +131,7 @@ func renderText(config textRenderConfig) ([]types.Triangle, error) {
dc.SetRGB(0, 0, 0)
dc.Clear()
dc.SetRGB(1, 1, 1)
dc.DrawStringAnchored(config.text, float64(config.contextWidth)/8, float64(config.contextHeight)/2, 0.0, 0.5)
dc.DrawStringWrapped(config.text, 0, float64(config.contextHeight)/2, 0.0, 0.5, float64(config.contextWidth), 1.5, config.alignment)

var triangles []types.Triangle

Expand Down