Image element img

img(id, url, r, c, t)

• id (optional): element ID
• url (required): image URL in double quotes
• r (required): display rectangle, type Rect
• c (optional, default "white"): tint color. Semi-transparent color makes the image semi-transparent
• t (optional, default cropCenter): fit mode:
  • cropCenter: keep aspect ratio, crop from center so r is filled
  • inside: keep aspect ratio, fit image inside r
  • fit: stretch to r