private void doDrawPolygon(Polygon polygon, int glMode) {
if (glMode == GL.GL_LINES) {
doDrawLines(polygon.getVertices());
} else {
Iterator<Vector> vertices = polygon.getVertices();
Iterator<Vector> texCoords = null;
if (textureCoords != null) texCoords = textureCoords.getVertices();
gl.glBegin(glMode);
for (vertices.reset();
!vertices.isDone() && (currentTexture == null || !texCoords.isDone());
vertices.advance()) {
Vector v = vertices.current();
if (currentTexture != null) {
Vector texCoord = texCoords.current();
texCoords.advance();
double y = texCoord.getY();
if (currentTexture.getMustFlipVertically()) {
y =
currentTexture.getImageTexCoords().top()
- y
+ currentTexture.getImageTexCoords().bottom();
}
gl.glTexCoord2d(texCoord.getX(), y);
}
double x = scaleX * (brushPos.getX() + v.getX());
double y = scaleY * (brushPos.getY() + v.getY());
gl.glVertex3d(x, y, brushPos.getZ());
}
gl.glEnd();
}
}
public void drawPolygon(Polygon polygon) {
switch (polygon.getVertexCount()) {
case 2:
doDrawPolygon(polygon, GL.GL_LINES);
break;
case 3:
doDrawPolygon(polygon, GL.GL_TRIANGLES);
break;
case 4:
doDrawPolygon(polygon, GL.GL_QUADS);
break;
default:
doDrawPolygon(polygon, GL.GL_POLYGON);
break;
}
}