v0.1.0 initial commit

render/definition.go

@@ -0,0 +1,42 @@
+package render
+
+import (
+	"fmt"
+	"symph/parameter"
+)
+
+type noteTile = [parameter.RenderNoteHeight][parameter.RenderNoteWidth]rune
+
+var noteChar noteTile
+
+func init() {
+	funnel := max(
+		len(fmt.Sprintf(parameter.DropFunnelFormat, "0.0")),
+		len(fmt.Sprintf(parameter.RiseFunnelFormat, "0.0")),
+	)
+	inner := parameter.RenderNoteWidth - 2
+
+	// inner == PositionLookaheadWindow by construction; assert the
+	// distance row and funnel still fit
+	if parameter.RenderNoteHeight < 2+parameter.RenderRowStrip ||
+		inner < parameter.RenderDistCols ||
+		parameter.RenderNoteWidth < funnel ||
+		parameter.RenderGapY < 1 {
+		panic("Render tile too small: need height>=5, width-2>=RenderDistCols, width>=funnel, gapY>=1")
+	}
+
+	noteChar[0][0] = parameter.BorderSingleTopLeft
+	noteChar[parameter.RenderNoteHeight-1][0] = parameter.BorderSingleBottomLeft
+	noteChar[0][parameter.RenderNoteWidth-1] = parameter.BorderSingleTopRight
+	noteChar[parameter.RenderNoteHeight-1][parameter.RenderNoteWidth-1] = parameter.BorderSingleBottomRight
+
+	for i := 1; i < parameter.RenderNoteWidth-1; i++ {
+		noteChar[0][i] = parameter.BorderSingleHorizontal
+		noteChar[parameter.RenderNoteHeight-1][i] = parameter.BorderSingleHorizontal
+	}
+
+	for i := 1; i < parameter.RenderNoteHeight-1; i++ {
+		noteChar[i][0] = parameter.BorderSingleVertical
+		noteChar[i][parameter.RenderNoteWidth-1] = parameter.BorderSingleVertical
+	}
+}