private void updateVertices() {
verticesMustBeUpdated = false;
Array<Vector2> vertices = new Array<Vector2>();
float step = MathUtils.PI2 / (float) vertexCount;
for (float i = 0; i < vertexCount; i++) {
Vector2 v = new Vector2(radius, 0);
v.rotateRad(step * i);
vertices.add(v);
}
for (OutlinePolygon outlinePolygon : basic.outlinePolygons) {
outlinePolygon.setVertices(vertices);
}
if (basic.texturePolygon != null) {
basic.texturePolygon.setVertices(vertices);
}
if (basic.physicsThing != null) {
((Circle) basic.physicsThing).setRadius(radius);
}
}
private void drawTriangleStrips(ShapeRenderer shapeRenderer, Color color, Color color1) {
for (int i = 0; i < vertexDataArray.size; i++) {
StripVertex bb = vertexDataArray.items[i];
Array<Float> data = bb.insideVertexData;
for (int j = 0; j < data.size - 3; ) {
shapeRenderer.setColor(j == 0 ? color : color1);
tmp.x = data.items[j];
tmp.y = data.items[j + 1];
tmp.rotateRad(angleRad);
tmp.scl(scale);
tmp.add(position);
tmp1.x = data.items[j + 3];
tmp1.y = data.items[j + 4];
tmp1.rotateRad(angleRad);
tmp1.scl(scale);
tmp1.add(position);
j += 3;
shapeRenderer.line(tmp, tmp1);
}
data = bb.outsideVertexData;
for (int j = 0; j < data.size - 3; ) {
shapeRenderer.setColor(j == 0 ? Color.ORANGE : Color.RED);
tmp.x = data.items[j];
tmp.y = data.items[j + 1];
tmp.rotateRad(angleRad);
tmp.scl(scale);
tmp.add(position);
tmp1.x = data.items[j + 3];
tmp1.y = data.items[j + 4];
tmp1.rotateRad(angleRad);
tmp1.scl(scale);
tmp1.add(position);
j += 3;
shapeRenderer.line(tmp, tmp1);
}
}
}
private void drawLineFromFirstToLast(ShapeRenderer shapeRenderer, Color color) {
shapeRenderer.setColor(color);
for (BoundingBox br : boundingBoxes) {
tmp.set(vertices.items[br.begin]);
tmp.rotateRad(angleRad);
tmp.scl(scale);
tmp.add(position);
tmp1.set(vertices.items[(br.begin + br.count) % vertices.size]);
tmp1.rotateRad(angleRad);
tmp1.scl(scale);
tmp1.add(position);
shapeRenderer.line(tmp, tmp1);
}
}
@Override
public Array<Vector2> getVerticesRotatedScaledAndTranslated(
float rotation, float scale, float transX, float transY) {
for (int i = 0; i < vertices.size; i++) {
Vector2 w = verticesRotatedAndTranslated.items[i];
w.set(vertices.items[i]);
w.rotateRad(rotation);
w.scl(scale);
w.add(transX, transY);
}
return verticesRotatedAndTranslated;
}
/** When the polygon is not closed we need auxiliary vertices to round the beginning. */
private Vector2 getAuxEnding(Array<Vector2> vertices, int i, float extraAngleRad) {
Util.getEdge(vertices, (i - 1 + vertices.size) % vertices.size, m1, m2);
nor1.set(m2).sub(m1).nor().scl(halfWidth);
int dir = clockWisePolygon ? 1 : -1;
if (insideStrip) dir *= -1;
nor1.rotate90(dir);
nor1.rotateRad(extraAngleRad * (-dir));
return new Vector2(m2).add(nor1);
}