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Almost rendering glyphs

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This commit is contained in:
Willem Cazander 2022-03-16 17:47:42 +01:00
parent ad8102be3a
commit df5efd4dab
19 changed files with 629 additions and 625 deletions
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198
gdxapp4d-lib-unicodezd/src/main/java/love/distributedrebirth/unicode4d/draw/DrawCharacter.java Normal file
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package love.distributedrebirth.unicode4d.draw;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import love.distributedrebirth.numberxd.base2t.part.T02PartBinary;
import love.distributedrebirth.numberxd.base2t.type.V036Teger;
import love.distributedrebirth.numberxd.base2t.type.V072Tong;
import love.distributedrebirth.unicode4d.CodePointCommandᶻᴰ;
import love.distributedrebirth.unicode4d.CodePointᶻᴰ;
import love.distributedrebirth.unicode4d.atlas.FontAtlasStoreGlyph;
import love.distributedrebirth.unicode4d.draw.DrawGlyphContour.ImGlyphPoint;
public class DrawCharacter {
private final FontAtlasStoreGlyph glyph;
private final List<DrawGlyphContour> contours = new ArrayList<>();
private final DrawGlyphPath glyphPath;
private DrawGlyphContour currentContour;
private int unicode;
private int xMax;
private int yMax;
private int xMin;
private int yMin;
private int advanceWidth;
private int leftSideBearing;
private boolean leftToRight;
public DrawCharacter(FontAtlasStoreGlyph glyph) {
this.glyph = glyph;
for (V072Tong tong: glyph.getTongs()) {
processCodePoint(tong.getValue(T02PartBinary.PART_1));
processCodePoint(tong.getValue(T02PartBinary.PART_2));
}
if (currentContour != null) {
contours.add(currentContour);
}
this.glyphPath = createGlyphPath();
}
private void processCodePoint(V036Teger codePoint) {
CodePointCommandᶻᴰ cmd = CodePointᶻᴰ.INSTANCE.getCommand(codePoint);
if (CodePointCommandᶻᴰ.NOP.equals(cmd)) {
return;
}
if (CodePointCommandᶻᴰ.START_LR.equals(cmd)) {
leftToRight = true;
return;
}
if (CodePointCommandᶻᴰ.START_RL.equals(cmd)) {
leftToRight = false;
return;
}
if (CodePointCommandᶻᴰ.UNICODE.equals(cmd)) {
unicode = CodePointᶻᴰ.INSTANCE.getArgumentUnicode(codePoint);
return;
}
if (CodePointCommandᶻᴰ.XY_MAX.equals(cmd)) {
xMax = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_1);
yMax = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_2);
return;
}
if (CodePointCommandᶻᴰ.XY_MIN.equals(cmd)) {
xMin = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_1);
yMin = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_2);
return;
}
if (CodePointCommandᶻᴰ.ADVANCE.equals(cmd)) {
advanceWidth = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_1);
leftSideBearing = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_2);
return;
}
if (CodePointCommandᶻᴰ.XY_ON_CURVE_START.equals(cmd)) {
if (currentContour != null) {
contours.add(currentContour);
}
int x = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_1);
int y = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_2);
currentContour = new DrawGlyphContour();
currentContour.point(x, y, true);
return;
}
if (CodePointCommandᶻᴰ.XY_OFF_CURVE_START.equals(cmd)) {
if (currentContour != null) {
contours.add(currentContour);
}
int x = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_1);
int y = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_2);
currentContour = new DrawGlyphContour();
currentContour.point(x, y, true);
return;
}
if (CodePointCommandᶻᴰ.XY_ON_CURVE.equals(cmd)) {
int x = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_1);
int y = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_2);
currentContour.point(x, y, true);
return;
}
if (CodePointCommandᶻᴰ.XY_OFF_CURVE.equals(cmd)) {
int x = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_1);
int y = CodePointᶻᴰ.INSTANCE.getArgument(codePoint, T02PartBinary.PART_2);
currentContour.point(x, y, false);
return;
}
}
private DrawGlyphPath createGlyphPath() {
// source function getPath(points): opentype.js/src/tables/glyf.js
DrawGlyphPath p = new DrawGlyphPath();
for (DrawGlyphContour contour: contours) {
//ImGlyphPoint prev = null;
ImGlyphPoint curr = contour.getPoints().get(contour.getPoints().size() - 1);
ImGlyphPoint next = contour.getPoints().get(0);
if (curr.onCurve) {
p.moveTo(curr.x, curr.y);
} else {
if (next.onCurve) {
p.moveTo(next.x, next.y);
} else {
int x = (curr.x + next.x) / 2;
int y = (curr.y + next.y) / 2;
p.moveTo(x, y);
}
}
Iterator<ImGlyphPoint> pointIt = contour.getPoints().iterator();
pointIt.next(); // Remove first as that is 'next'
while (pointIt.hasNext()) {
//prev = curr;
curr = next;
next = pointIt.next();
if (curr.onCurve) {
p.lineTo(curr.x, curr.y);
} else {
int x = next.x;
int y = next.y;
if (next.onCurve) {
x = (curr.x + next.x) / 2;
y = (curr.y + next.y) / 2;
}
p.quadCurveTo(curr.x, curr.y, x, y);
}
}
p.closePath();
}
return p;
}
public FontAtlasStoreGlyph getGlyph() {
return glyph;
}
public List<DrawGlyphContour> getContours() {
return contours;
}
public DrawGlyphPath getGlyphPath() {
return glyphPath;
}
public int getUnicode() {
return unicode;
}
public int getxMax() {
return xMax;
}
public int getyMax() {
return yMax;
}
public int getxMin() {
return xMin;
}
public int getyMin() {
return yMin;
}
public int getAdvanceWidth() {
return advanceWidth;
}
public int getLeftSideBearing() {
return leftSideBearing;
}
public boolean isLeftToRight() {
return leftToRight;
}
}