158 lines
3.7 KiB
Java
158 lines
3.7 KiB
Java
package com.pedro.encoder.input.gl;
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import android.graphics.PointF;
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import android.view.View;
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import com.pedro.encoder.utils.gl.TranslateTo;
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/**
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* Created by pedro on 3/2/22.
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*/
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public class AndroidViewSprite {
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private PointF scale;
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private PointF position;
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private PointF rotationAxis;
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private int rotation;
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private View view;
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public AndroidViewSprite() {
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reset();
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}
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public void setView(View view) {
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this.view = view;
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rotationAxis = new PointF(view.getMeasuredWidth() / 2f, view.getMeasuredHeight() / 2f);
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}
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/**
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* @param deltaX Position x in percent
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* @param deltaY Position x in percent
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*/
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public void translate(float deltaX, float deltaY) {
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position.x = deltaX;
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position.y = deltaY;
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}
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/**
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* @param translation Predefined position
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*/
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public void translate(TranslateTo translation) {
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switch (translation) {
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case CENTER:
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this.position.x = 50f - scale.x / 2f;
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this.position.y = 50f - scale.x / 2f;
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break;
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case BOTTOM:
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this.position.x = 50f - scale.x / 2f;
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this.position.y = 100f - scale.y;
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break;
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case TOP:
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this.position.x = 50f - scale.x / 2f;
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this.position.y = 0f;
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break;
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case LEFT:
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this.position.x = 0f;
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this.position.y = 50f - scale.y / 2f;
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break;
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case RIGHT:
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this.position.x = 100f - scale.x;
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this.position.y = 50f - scale.y / 2f;
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break;
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case TOP_LEFT:
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this.position.x = 0f;
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this.position.y = 0f;
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break;
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case TOP_RIGHT:
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this.position.x = 100f - scale.x;
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this.position.y = 0f;
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break;
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case BOTTOM_LEFT:
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this.position.x = 0f;
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this.position.y = 100f - scale.y;
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break;
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case BOTTOM_RIGHT:
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this.position.x = 100f - scale.x;
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this.position.y = 100f - scale.y;
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break;
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default:
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break;
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}
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}
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/**
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* @param deltaX Scale x in percent
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* @param deltaY Scale y in percent
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*/
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public void scale(float deltaX, float deltaY) {
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//keep old position
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position.x /= deltaX / scale.x;
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position.y /= deltaY / scale.y;
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//set new scale.
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scale = new PointF(deltaX, deltaY);
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}
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/**
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* @return Scale in percent
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*/
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public PointF getScale() {
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return scale;
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}
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/**
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* @return Position in percent
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*/
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public PointF getTranslation() {
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return position;
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}
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public int getRotation() {
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return rotation;
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}
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public PointF getRotationAxis() {
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return rotationAxis;
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}
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public void setRotation(int rotation) {
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if (rotation < 0) {
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this.rotation = 0;
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} else if (rotation > 360) {
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this.rotation = 360;
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} else {
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this.rotation = rotation;
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}
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}
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public void reset() {
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scale = new PointF(0f, 0f);
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position = new PointF(0f, 0f);
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}
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/**
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* Traduce position in percent to work with canvas.
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*/
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public PointF getCanvasPosition(float previewX, float previewY) {
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return new PointF(previewX * position.x / 100f, previewY * position.y / 100f);
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}
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/**
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* Traduce scale in percent to work with canvas.
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*/
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public PointF getCanvasScale(float previewX, float previewY) {
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float scaleFactorX = 100f * (float) view.getWidth() / previewX;
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float scaleFactorY = 100f * (float) view.getHeight() / previewY;
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return new PointF(scale.x / scaleFactorX, scale.y / scaleFactorY);
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}
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/**
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* Calculate default scale if none is indicated after load the filter.
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*/
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public void calculateDefaultScale(float previewX, float previewY) {
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if (scale.x == 0f && scale.y == 0f) {
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scale.x = 100f * (float) view.getWidth() / previewX;
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scale.y = 100f * (float) view.getHeight() / previewY;
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}
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}
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}
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