update show object

      </v-card>

    </v-dialog>

    <model-stl v-show="show_stl" class="model" :backgroundColor="stl_background" :src="this.stl_path()"></model-stl>

    <model-stl style="height: 100px" v-show="show_stl" class="model" :backgroundColor="stl_background" :src="this.stl_path()"></model-stl>

    <v-btn @click="toggle_object">Afficher/Masquer</v-btn>

    <v-btn v-show="show_stl" block v-on:click="dialog = true">Agrandir</v-btn>

    <v-card-title>{{ title }}</v-card-title>