【发布时间】:2019-09-26 11:10:37
【问题描述】:
您好,我正在将 konva js (https://konvajs.org) 与 vue 一起使用,我正在尝试为文本设置动画,以便它从舞台外滑到屏幕中的某个位置,但我不是 100% 确定这应该如何工作,我已经能够在这里进行演示;
https://codesandbox.io/s/vue-konva-template-i2em3
Vue;
<v-stage ref="stage" :config="stageSize">
<v-layer ref="layer">
<v-text
ref="text1"
:config="{
text: 'Draggable Text',
x: 50,
y: 50,
draggable: true,
fill: 'black'
}"
/>
</v-layer>
</v-stage>
</template>
<script>
const width = window.innerWidth;
const height = window.innerHeight;
export default {
data() {
return {
stageSize: {
width: width,
height: height
}
};
},
methods: {
changeSize(e) {
// to() is a method of `Konva.Node` instances
e.target.to({
scaleX: Math.random() + 0.8,
scaleY: Math.random() + 0.8,
duration: 0.2
});
}
},
mounted() {
const vm = this;
const amplitude = 100;
const period = 5000;
// in ms
const centerX = vm.$refs.stage.getStage().getWidth() / 2;
const text = this.$refs.text1.getStage();
// example of Konva.Animation
const anim = new Konva.Animation(function(frame) {
text.setX(
amplitude * Math.sin((frame.time * 2 * Math.PI) / period) + centerX
);
}, text.getLayer());
anim.start();
}
};
</script>
有什么想法可以让文本从舞台外出现然后停在画布内的某个点?
【问题讨论】:
标签: javascript vue.js canvas konvajs