Add

- BLACK DIAMOND MINUS WHITE X (`U+2756`) (#1960).
  - WHITE CONCAVE-SIDED DIAMOND (`U+27E1`) (#1960).
  - LIGHT FOUR POINTED BLACK CUSP (`U+2BCC`) (#1960).
  - WHITE FOUR POINTED CUSP (`U+2BCE`) (#1960).

changes/26.2.2.md

@@ -1,5 +1,9 @@
 * Add characters:
+  - BLACK DIAMOND MINUS WHITE X (`U+2756`) (#1960).
+  - WHITE CONCAVE-SIDED DIAMOND (`U+27E1`) (#1960).
   - LEFT BARB UP RIGHT BARB UP HARPOON (`U+294E`) ... UP BARB LEFT DOWN BARB LEFT HARPOON (`U+2951`).
+  - LIGHT FOUR POINTED BLACK CUSP (`U+2BCC`) (#1960).
+  - WHITE FOUR POINTED CUSP (`U+2BCE`) (#1960).
 * Add support for specialized Vietnamese dual diacritics (#1935).
 * Make bowl height of Cyrillic Yat and Tall Yat (`U+0463`, `U+1C67`) consistent (#1945).
 * Make Guillemets (`«`, `»`) curly for Default Slab.

font-src/glyphs/symbol/geometric/masked.ptl

@@ -210,31 +210,18 @@ glyph-block Symbol-Geometric-Masked : for-width-kinds WideWidth1
 					if T [VBar.m Geom.MidX (Geom.MidY + Geom.Size - hv) (Geom.MidY - hv) s]    [glyph-proc]
 					if B [VBar.m Geom.MidX (Geom.MidY - Geom.Size + hv) (Geom.MidY + hv) s]    [glyph-proc]
 
-	do "Miscellaneous"
+	do "Diamond minus white X"
-		create-glyph [MangleName 'uni2389'] [MangleUnicode 0x2389] : glyph-proc
+		create-glyph [MangleName "blackDiamondMinusWhiteX"] [MangleUnicode 0x2756] : glyph-proc
-			define shiftUp : ApparentTranslate 0
-				Math.max
-					0.5 * [Math.sqrt 2] * Size.MediumSmall.sw
-					Geom.Size * (1 - Size.MediumSmall.size)
-
 			set-width Geom.Width
-			include : refer-glyph : MangleName 'whiteCircle'
+			local gap : Math.max (0.2 * Geom.Size) [UnicodeWeightGrade 4 Geom.Scalar]
-			include : intersection
+			include : difference
-				refer-glyph : MangleName 'blackCircleO'
+				refer-glyph : MangleName "blackDiamond"
-				union
+				dispiro
-					difference
+					flat (Geom.MidX - Geom.Size) (Geom.MidY - Geom.Size) [widths.center gap]
-						HBar.m 0 Geom.Width Geom.MidY GeometryStroke
+					curl (Geom.MidX + Geom.Size) (Geom.MidY + Geom.Size)
-						with-transform [ApparentTranslate 0 0.01] : with-transform shiftUp : refer-glyph : MangleName 'blackMediumEqualDiamond'
+				dispiro
-					intersection
+					flat (Geom.MidX + Geom.Size) (Geom.MidY - Geom.Size) [widths.center gap]
-						MaskBelow (Geom.MidY + GeometryStroke / 2)
+					curl (Geom.MidX - Geom.Size) (Geom.MidY + Geom.Size)
-						with-transform shiftUp : refer-glyph : MangleName 'whiteMediumEqualDiamond'
-
-		create-glyph [MangleName 'uni238A'] [MangleUnicode 0x238A] : glyph-proc
-			set-width Geom.Width
-			include : refer-glyph : MangleName 'whiteCircle'
-			include : intersection
-				refer-glyph : MangleName 'blackCircleO'
-				refer-glyph : MangleName 'whiteEqualTriangleDown'
 
 	do "Moon Phases"
 		alias [MangleName 'newMoon'] [MangleUnicode 0x1F311] [MangleName 'blackCircle']
@@ -282,3 +269,29 @@ glyph-block Symbol-Geometric-Masked : for-width-kinds WideWidth1
 				composite-proc
 					WaxingMoonMask
 					FlipAround Geom.MidX Geom.MidY
+
+	do "Miscellaneous"
+		create-glyph [MangleName 'uni2389'] [MangleUnicode 0x2389] : glyph-proc
+			define shiftUp : ApparentTranslate 0
+				Math.max
+					0.5 * [Math.sqrt 2] * Size.MediumSmall.sw
+					Geom.Size * (1 - Size.MediumSmall.size)
+
+			set-width Geom.Width
+			include : refer-glyph : MangleName 'whiteCircle'
+			include : intersection
+				refer-glyph : MangleName 'blackCircleO'
+				union
+					difference
+						HBar.m 0 Geom.Width Geom.MidY GeometryStroke
+						with-transform [ApparentTranslate 0 0.01] : with-transform shiftUp : refer-glyph : MangleName 'blackMediumEqualDiamond'
+					intersection
+						MaskBelow (Geom.MidY + GeometryStroke / 2)
+						with-transform shiftUp : refer-glyph : MangleName 'whiteMediumEqualDiamond'
+
+		create-glyph [MangleName 'uni238A'] [MangleUnicode 0x238A] : glyph-proc
+			set-width Geom.Width
+			include : refer-glyph : MangleName 'whiteCircle'
+			include : intersection
+				refer-glyph : MangleName 'blackCircleO'
+				refer-glyph : MangleName 'whiteEqualTriangleDown'

font-src/glyphs/symbol/geometric/plain.ptl

@@ -394,7 +394,7 @@ glyph-block Symbol-Geometric-Plain : for-width-kinds WideWidth1
 
 	do "Square-lozenge"
 		define [SquareLozengeShape cx cy size] : begin
-			define p 0.8
+			define p 0.7
 			return : spiro-outline
 				corner (cx - size) (cy + size)
 				g4     cx (cy + p * size)
@@ -410,6 +410,24 @@ glyph-block Symbol-Geometric-Plain : for-width-kinds WideWidth1
 		StdWhiteShape SquareLozengeShape 'rotatedWhiteFourPointedCusp' 0x2BCF Size.MediumOblique
 		StdBlackShape SquareLozengeShape 'rotatedBlackFourPointedCusp' 0x2BCD Size.MediumOblique
 
+	do "Diamond-lozenge"
+		define [DiamondLazongeShape cx cy size] : begin
+			define p 0.7
+			return : spiro-outline
+				corner (cx - size) cy
+				g4     [mix cx [mix (cx - size) cx 0.5] p] [mix cy [mix cy (cy - size) 0.5] p]
+				corner cx (cy - size)
+				g4     [mix cx [mix cx (cx + size) 0.5] p] [mix cy [mix (cy - size) cy 0.5] p]
+				corner (cx + size) cy
+				g4     [mix cx [mix (cx + size) cx 0.5] p] [mix cy [mix cy (cy + size) 0.5] p]
+				corner cx (cy + size)
+				g4     [mix cx [mix cx (cx - size) 0.5] p] [mix cy [mix (cy + size) cy 0.5] p]
+				close
+
+		StdWhiteShape DiamondLazongeShape 'whiteConcaveSidedDiamond'  0x27E1 [Object.assign {.} Size.Oblique {.sw ([Math.sqrt 2] * [UnicodeWeightGrade 6 Geom.Scalar])}]
+		StdBlackShape DiamondLazongeShape 'lightFourPointedBlackCusp' 0x2BCC Size.Oblique
+		StdWhiteShape DiamondLazongeShape 'whiteFourPointedBlackCusp' 0x2BCE Size.ObliqueSA
+
 	do "Circle"
 		define [CircleShape cx cy size] : spiro-outline
 			g4 (cx - size) cy

font-src/glyphs/symbol/geometric/shared.ptl

@@ -45,13 +45,15 @@ glyph-block Symbol-Geometric-Shared : begin
 		VerySmall     {.size DesignParameters.geometric_very_small_x      .sw [Math.min GeometryStroke : AdviceStroke 7   Geom.Scalar]}
 		Tiny          {.size DesignParameters.geometric_tiny_x            .sw [Math.min GeometryStroke : AdviceStroke 8   Geom.Scalar]}
 
-		Oblique            { .sw [Math.min GeometryStroke : AdviceStroke 4.75 Geom.Scalar] }
+		Oblique            {                                                  .sw [Math.min GeometryStroke : AdviceStroke 4.75 Geom.Scalar] }
 		MediumOblique      { .size DesignParameters.geometric_medium_x        .sw [Math.min GeometryStroke : AdviceStroke 4.75 Geom.Scalar] }
 		MediumSmallOblique { .size DesignParameters.geometric_medium_small_x  .sw [Math.min GeometryStroke : AdviceStroke 5.25 Geom.Scalar] }
 		SmallOblique       { .size DesignParameters.geometric_small_x         .sw [Math.min GeometryStroke : AdviceStroke 6.25 Geom.Scalar] }
 		VerySmallOblique   { .size DesignParameters.geometric_very_small_x    .sw [Math.min GeometryStroke : AdviceStroke 7.25 Geom.Scalar] }
 		TinyOblique        { .size DesignParameters.geometric_tiny_x          .sw [Math.min GeometryStroke : AdviceStroke 8.25 Geom.Scalar] }
 
+		ObliqueSA          {                                                  .sw ([Math.sqrt 2] * [Math.min GeometryStroke : AdviceStroke 4.75 Geom.Scalar]) }
+
 		TinyInner   { .innerSize (1 / 4) }
 		SmallInner  { .innerSize (1 / 3) }
 		MediumInner { .innerSize (2 / 3) }