All vue-konva components correspond to Konva components of the same name with the prefix ‘v-‘. All the parameters available for Konva objects can add as config in the prop for corresponding vue-konva components.

Core shapes are: v-rect, v-circle, v-ellipse, v-line, v-image, v-text, v-text-path, v-star, v-label, v-path, v-regular-polygon. Also you can create custom shape.

To get more info about Konva you can read Konva Overview.