TexturePart.java

package pl.kotcrab.gdxcombat.core;

import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.math.Vector2;

public class TexturePart {
	Texture tex;
	Vector2 position;

	// Target Dimension of image

	int targetWidth;
	int targetHeight;

	// Src Dimensions of Image

	int srcWidth;
	int srcHeight;
	int srcX;
	int srcY;

	// Ratio of dimension of target and source

	float srcTargetRatioX;
	float srcTargetRatioY;

	// ImagePart variables with values between 0-100 to draw part of image

	int startPercentX;
	int endPercentX;
	int startPercentY;
	int endPercentY;

	int clipWidth;
	int clipHeight;

	int clipSrcWidth;
	int clipSrcHeight;

	public TexturePart(TextureRegion reg, float x, float y) {

		tex = reg.getTexture();
		position = new Vector2(x, y);
		srcX = reg.getRegionX();
		srcY = reg.getRegionY();
		srcWidth = reg.getRegionWidth();
		srcHeight = reg.getRegionHeight();
		clipSrcWidth = srcWidth;
		clipSrcHeight = srcHeight;
		startPercentX = 0;
		startPercentY = 0;
		endPercentX = 100;
		endPercentY = 100;
		SetTargetDimension(srcWidth, srcHeight);
	}

	public void SetTargetDimension(int targetWidth, int targetHeight) {
		this.targetWidth = targetWidth;
		this.targetHeight = targetHeight;
		clipWidth = targetWidth;
		clipHeight = targetHeight;
		srcTargetRatioX = (float) targetWidth / (float) srcWidth;
		srcTargetRatioY = (float) targetHeight / (float) srcHeight;
	}

	public void SetStart(int x, int y) {
		startPercentX = x;
		startPercentY = y;
	}

	public void SetEnd(int x, int y) {
		endPercentX = x;
		endPercentY = y;
	}

	public void draw(SpriteBatch sp) {
		clipSrcWidth = (int) (Math.abs(startPercentX - endPercentX) / 100f * srcWidth);
		clipSrcHeight = (int) (Math.abs(startPercentX - endPercentY) / 100f * srcHeight);
		int startX = srcX + (int) ((float) startPercentX / 100f * (float) srcX);
		int startY = srcY + (int) ((float) startPercentY / 100f * (float) srcY);
		clipWidth = (int) (srcTargetRatioX * clipSrcWidth);
		clipHeight = (int) (srcTargetRatioY * clipSrcHeight);

		sp.draw(tex, position.x - targetWidth / 2, position.y - targetHeight / 2, targetWidth / 2, targetHeight / 2, clipWidth, clipHeight, 1, 1, 0, startX, startY, clipSrcWidth, clipSrcHeight, false, true);
	}

}