Java GraphicsContext.save方法代码示例

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
/**
 * Draws the image representing the nucleotide on a graphics context, with specified rotation.
 * @param GraphicsContext gc: The GraphicsContext you want to draw the object on
 * @param x: The x coord you want to draw the image at
 * @param y: The y coord you want to draw the image at
 * @param r: The rotation, in degrees, you want to draw the nucleotide at. 0 would draw it with the base pointing up.
 */
public void draw(GraphicsContext gc, int x, int y, int r) {
	gc.save();
	gc.translate(x, y);
	gc.rotate(r);
	gc.translate(-x, -y);
	gc.drawImage(image, x, y);
	gc.restore();
}
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
/**
 * Paint a black/white stone onto a graphics context with a grid
 * @param gc Graphics context
 * @param startX Start (top left) x coordinate of the grid
 * @param startY Start (top left) y coordinate of the grid
 * @param cellSize Size of the grid cells
 * @param row Row position of the stone
 * @param col Column position of the stone
 * @param index Index of the stone (1 = black, 2 = white)
 * @param transparent Transparency value, 0.5 alpha if true
 */
private static void paintStone(GraphicsContext gc, double startX, double
        startY, double cellSize, int row, int col, int index,
                               boolean transparent) {
    double x = startX + col*cellSize;
    double y = startY + row*cellSize;
    double offset = (cellSize * 0.7) / 2;
    gc.save();
    if(transparent) {
        gc.setGlobalAlpha(0.5);
    }
    switch(index) {
        case 1:
            gc.setFill(blackGradient);
            gc.fillOval(x - offset, y - offset, cellSize * 0.7,
                    cellSize * 0.7);
            break;
        case 2:
            gc.setFill(whiteGradient);
            gc.fillOval(x - offset, y - offset, cellSize * 0.7,
                    cellSize * 0.7);
            break;
    }
    gc.restore();
}
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
/**
 * Draws the content of the canvas and updates the 
 * {@code renderingInfo} attribute with the latest rendering 
 * information.
 */
public final void draw() {
    GraphicsContext ctx = getGraphicsContext2D();
    ctx.save();
    double width = getWidth();
    double height = getHeight();
    if (width > 0 && height > 0) {
        ctx.clearRect(0, 0, width, height);
        this.info = new ChartRenderingInfo();
        if (this.chart != null) {
            this.chart.draw(this.g2, new Rectangle((int) width, 
                    (int) height), this.anchor, this.info);
        }
    }
    ctx.restore();
    for (OverlayFX overlay : this.overlays) {
        overlay.paintOverlay(g2, this);
    }
    this.anchor = null;
}
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
/**
 * Draw numbers along the X axis for a previously drawn grid. Each number
 * aligns with the corresponding intersection on the grid.
 * @param gc Graphics context
 * @param startX Start point on x axis
 * @param startY Start point on y axis
 * @param rows Number of rows
 * @param columns Number of columns
 * @param cellSize Size of each cell in the grid
 * @param distance Draw distance away from the left of the grid
 */
private void drawNumbers(GraphicsContext gc, double startX, double
        startY, int rows, int columns, double cellSize, double distance) {
    gc.save();
    gc.setFont(BOARD_FONT);
    gc.setFill(Color.rgb(0,0,0, 0.75));
    for(int i = 0; i < size; i++) {
        double offset = i*cellSize;
        gc.setTextAlign(TextAlignment.CENTER);
        gc.setTextBaseline(VPos.CENTER);
        gc.fillText(Integer.toString(rows + 1 - i), startX - distance,
                startY + offset);
    }
    gc.restore();
}
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
public void render(Bullet bullet, GraphicsContext gc) {
    gc.save();
    gc.translate(bullet.getX(), bullet.getY());
    gc.transform(new Affine(new Rotate(bullet.getAngle()))); //Rotate the gc to the angle of the bullet's path

    //TODO increase bullet size in general

    if (this == STANDARD) {
        gc.translate(-2, -3); //Move SVG to center of Bullet
        gc.setFill(Color.GRAY);
        gc.beginPath();
        gc.appendSVGPath("M 0 3 Q 0 1 2 0 Q 4 1 4 3 L 4 7 L 0 7 Z"); //SVG PATH OF BULLET
        gc.fill();
        gc.closePath();
    } else if (this == ROCKET) {
        //TODO create rocket SVG
        gc.setFill(Color.GRAY);
        gc.beginPath();
        gc.appendSVGPath("M 0 3 Q 0 1 2 0 Q 4 1 4 3 L 4 7 L 0 7 Z"); //SVG PATH OF BULLET
        gc.fill();
        gc.closePath();
    } else if (this == BOUNCY) {
        gc.setFill(Color.GRAY);
        gc.fillOval(bullet.getX() - bullet.getRadius(), bullet.getY() - bullet.getRadius(), bullet.getRadius() * 2, bullet.getRadius() * 2);
    }

    gc.restore();
}
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
public void update(GraphicsContext gc) {

        angle += rotation;
        x += Math.sin(Math.toRadians(-angle)) * velocity;
        y += Math.cos(Math.toRadians(-angle)) * velocity;

        bounds.setLocation(x, y, 64, 64, angle);

        //RENDER
        gc.save();

        Affine transform = new Affine(new Rotate(angle, x, y));
        gc.transform(transform);
        gc.setFill(Color.GREY);
        gc.fillRoundRect(x - 32, y - 32, 64, 64, 3, 3);
        gc.setFill(color);
        gc.fillRect(x - 32 + 12, y - 32, 64 - 24, 64);

        gc.restore();

        //Update turret
        turret.update(gc);

        if (currentPickUp != null && currentPickUp.getTime() == 0) {
            currentPickUp = null;
            bulletType = BulletType.STANDARD;
        }
    }
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
/**
 * Draws both strands next to each other
 * @param gc- graphics context to draw helix on
 * @param x- left start of the drawing
 * @param y- upper start of the drawing
 */
public void draw(GraphicsContext gc) {
	gc.save();
	gc.translate(x, y-imageSize);
	gc.rotate(r);
	gc.translate(-x, -(y-imageSize));
	strands[0].draw(gc);
	strands[1].draw(gc);
	gc.restore();
}
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
public static void drawCursor(GraphicsContext g, ViewPort v, Vector2fc mouse)
{
	Vector2dc offset = ViewPort.getScreenPos(v,
			(int) Math.floor(mouse.x()),
			(int) Math.floor(mouse.y()),
			new Vector2d());

	g.save();
	g.translate(offset.x(), offset.y());
	g.scale(v.getUnitScale(), v.getUnitScale());
	g.setFill(COLOR_CURSOR);
	g.fillRect(0, 0, 1, 1);
	g.restore();
}
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
public static void drawTile(GraphicsContext g, DungeonTileRenderer renderer, DungeonTile tile, double x, double y, double width, double height)
{
	renderer.tile = tile;

	g.save();
	g.translate(x, y);
	g.scale(width, height);
	renderer.tile.draw(renderer, g);
	g.restore();
}
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
public void render(GraphicsContext g)
{
	for(DungeonSlot slot : this.slots)
	{
		g.save();
		slot.render(g);
		g.restore();
	}
}
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
/**
 * Draw letters along the Y axis for a previously drawn grid. Each letter
 * aligns with the corresponding intersection on the grid.
 * @param gc Graphics context
 * @param startX Start point on x axis
 * @param startY Start point on y axis
 * @param rows Number of rows
 * @param columns Number of columns
 * @param cellSize Size of each cell in the grid
 * @param distance Draw distance away from the bottom of the grid
 */
private void drawLetters(GraphicsContext gc, double startX, double
        startY, int rows, int columns, double cellSize, double distance) {
    gc.save();
    gc.setFont(BOARD_FONT);
    gc.setFill(Color.rgb(0,0,0, 0.75));
    for(int i = 0; i < size; i++) {
        double offset = i*cellSize;
        gc.setTextAlign(TextAlignment.CENTER);
        gc.setTextBaseline(VPos.CENTER);
        gc.fillText(Character.toString((char)('A' + i)), startX + offset,
                startY + cellSize*(rows) + distance);
    }
    gc.restore();
}
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
public static final void drawTextWithBackground(final GraphicsContext CTX, final String TEXT, final Font FONT, final Color TEXT_BACKGROUND, final Color TEXT_FILL, final double X, final double Y) {
    CtxDimension dim = getTextDimension(TEXT, FONT);
    double textWidth  = dim.getWidth() * 1.2;
    double textHeight = dim.getHeight();
    CTX.save();
    CTX.setFont(FONT);
    CTX.setTextBaseline(VPos.CENTER);
    CTX.setTextAlign(TextAlignment.CENTER);
    CTX.setFill(TEXT_BACKGROUND);
    CTX.fillRect(X - textWidth * 0.5, Y - textHeight * 0.5, textWidth, textHeight);
    CTX.setFill(TEXT_FILL);
    CTX.fillText(TEXT, X, Y);
    CTX.restore();
}
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
/**
 * Draws all nucleotides in strand from left to right
 * @param gc: GraphicsContext on which to draw strand
 * Add type functionality
 */
public void draw(GraphicsContext gc) {
	int x2 = x;
	int y2 = y;
	if(r!=0) {
			gc.save();
			gc.translate(x, y);
			gc.rotate(r);
			gc.translate(-x, -y);
	}
	if(type==1){
		for(int i = 0; i < bases.size(); i++) {
			if(bases.get(i) != null){
				bases.get(i).draw(gc,x2,y);
				if(i+1< bases.size()){
					if(bases.get(i+1) != null && bonds.get(i)){
						gc.strokeLine(x2+Nucleotide.getImageSize()*.81, y+Nucleotide.getImageSize()*.81, x2+Nucleotide.getImageSize()*1.10, y+Nucleotide.getImageSize()*.73);
					}
				}
			}
			x2+=Nucleotide.getImageSize();
		}
	}
	else if(type == 0){
		int lx = x2+Nucleotide.getImageSize()*2;
		y2+=Nucleotide.getImageSize();
		x2+=Nucleotide.getImageSize();
		for(int i = 0; i < bases.size(); i++) {
			if(bases.get(i) != null){
				bases.get(i).draw(gc,x2,y2,180);
				if(i+1< bases.size()){
					if(bases.get(i+1) != null && bonds.get(i)){
						//gc.strokeLine(x2,y2,x2+50,y2+50);
						gc.strokeLine(lx-Nucleotide.getImageSize()*.81, y2-Nucleotide.getImageSize()*.81, lx-Nucleotide.getImageSize()*1.10, y2-Nucleotide.getImageSize()*.73);
					}
				}
			}
			x2+=Nucleotide.getImageSize();
			lx+=Nucleotide.getImageSize();
		}
	}
	else{
		System.out.println("Type is not 0 or 1");
	}
	if(r!=0) {
		gc.restore();
	}
}
 

import javafx.scene.canvas.GraphicsContext; //导入方法依赖的package包/类
public static void drawGrid(GraphicsContext g, ViewPort v)
{
	double dx = v.getX() % v.getUnitScale();
	double dy = v.getY() % v.getUnitScale();

	g.setStroke(COLOR_GRID);
	g.setLineWidth(GRID_LINE_WIDTH);

	while(dx < v.getWidth())
	{
		double x = v.getX() - dx;
		if (Math.abs(x) < v.getUnitScale() / 2)
		{
			g.save();
			g.setLineWidth(AXIS_LINE_WIDTH);
			g.setStroke(COLOR_YAXIS);
			g.strokeLine(dx, 0, dx, v.getHeight());
			g.restore();
		}
		else
		{
			g.strokeLine(dx, 0, dx, v.getHeight());
		}
		dx += v.getUnitScale();
	}

	while(dy < v.getHeight())
	{
		double y = v.getY() - dy;
		if (Math.abs(y) < v.getUnitScale() / 2)
		{
			g.save();
			g.setLineWidth(AXIS_LINE_WIDTH);
			g.setStroke(COLOR_XAXIS);
			g.strokeLine(0, dy, v.getWidth(), dy);
			g.restore();
		}
		else
		{
			g.strokeLine(0, dy, v.getWidth(), dy);
		}
		dy += v.getUnitScale();
	}
}