java.awt.geom.AffineTransform.setToIdentity()方法的使用及代码示例

x33g5p2x  于2022-01-15 转载在 其他  
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本文整理了Java中java.awt.geom.AffineTransform.setToIdentity()方法的一些代码示例，展示了AffineTransform.setToIdentity()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。AffineTransform.setToIdentity()方法的具体详情如下：
包路径：java.awt.geom.AffineTransform
类名称：AffineTransform
方法名：setToIdentity

AffineTransform.setToIdentity介绍

暂无

代码示例

代码示例来源：origin: stackoverflow.com

// create an AffineTransform 
// and a triangle centered on (0,0) and pointing downward
// somewhere outside Swing's paint loop
AffineTransform tx = new AffineTransform();
Line2D.Double line = new Line2D.Double(0,0,100,100);

Polygon arrowHead = new Polygon();  
arrowHead.addPoint( 0,5);
arrowHead.addPoint( -5, -5);
arrowHead.addPoint( 5,-5);

// [...]
private void drawArrowHead(Graphics2D g2d) {  
  tx.setToIdentity();
  double angle = Math.atan2(line.y2-line.y1, line.x2-line.x1);
  tx.translate(line.x2, line.y2);
  tx.rotate((angle-Math.PI/2d));  

  Graphics2D g = (Graphics2D) g2d.create();
  g.setTransform(tx);   
  g.fill(arrowHead);
  g.dispose();
}

代码示例来源：origin: Activiti/Activiti

public void drawDefaultSequenceFlowIndicator(Line2D.Double line) {
  double length = DEFAULT_INDICATOR_WIDTH;
  double halfOfLength = length / 2;
  double f = 8;
  Line2D.Double defaultIndicator = new Line2D.Double(-halfOfLength,
                            0,
                            halfOfLength,
                            0);
  double angle = Math.atan2(line.y2 - line.y1,
               line.x2 - line.x1);
  double dx = f * Math.cos(angle);
  double dy = f * Math.sin(angle);
  double x1 = line.x1 + dx;
  double y1 = line.y1 + dy;
  AffineTransform transformation = new AffineTransform();
  transformation.setToIdentity();
  transformation.translate(x1,
               y1);
  transformation.rotate((angle - 3 * Math.PI / 4));
  AffineTransform originalTransformation = g.getTransform();
  g.setTransform(transformation);
  g.draw(defaultIndicator);
  g.setTransform(originalTransformation);
}

代码示例来源：origin: Activiti/Activiti

transformation.setToIdentity();
double angle = Math.atan2(line.y2 - line.y1,
             line.x2 - line.x1);

代码示例来源：origin: Activiti/Activiti

transformation.setToIdentity();
transformation.rotate(270 * Math.PI / 180);

代码示例来源：origin: Activiti/Activiti

public void drawConditionalSequenceFlowIndicator(Line2D.Double line) {
  int horizontal = (int) (CONDITIONAL_INDICATOR_WIDTH * 0.7);
  int halfOfHorizontal = horizontal / 2;
  int halfOfVertical = CONDITIONAL_INDICATOR_WIDTH / 2;
  Polygon conditionalIndicator = new Polygon();
  conditionalIndicator.addPoint(0,
                 0);
  conditionalIndicator.addPoint(-halfOfHorizontal,
                 halfOfVertical);
  conditionalIndicator.addPoint(0,
                 CONDITIONAL_INDICATOR_WIDTH);
  conditionalIndicator.addPoint(halfOfHorizontal,
                 halfOfVertical);
  AffineTransform transformation = new AffineTransform();
  transformation.setToIdentity();
  double angle = Math.atan2(line.y2 - line.y1,
               line.x2 - line.x1);
  transformation.translate(line.x1,
               line.y1);
  transformation.rotate((angle - Math.PI / 2d));
  AffineTransform originalTransformation = g.getTransform();
  g.setTransform(transformation);
  g.draw(conditionalIndicator);
  Paint originalPaint = g.getPaint();
  g.setPaint(CONDITIONAL_INDICATOR_COLOR);
  g.fill(conditionalIndicator);
  g.setPaint(originalPaint);
  g.setTransform(originalTransformation);
}

代码示例来源：origin: mapsforge/mapsforge

@Override
public void reset() {
  this.affineTransform.setToIdentity();
}

代码示例来源：origin: geotools/geotools

/** Checks for {@linkplain #checkPermission permission} before setting this transform. */
@Override
public void setToIdentity() {
  checkPermission();
  super.setToIdentity();
}

代码示例来源：origin: mapsforge/mapsforge

transform.setToIdentity();

代码示例来源：origin: dermotte/LIRE

@Override
public boolean fit(PointMatch[] min_matches) {
  PointMatch m1 = min_matches[0];
  float[] m1_p1 = m1.getP1().getL();
  float[] m1_p2 = m1.getP2().getL();
  float tx = m1_p1[0] - m1_p2[0];
  float ty = m1_p1[1] - m1_p2[1];
  affine.setToIdentity();
  affine.translate(tx, ty);
  return true;
}

代码示例来源：origin: dermotte/LIRE

@Override
public boolean fit(PointMatch[] min_matches) {
  PointMatch m1 = min_matches[0];
  float[] m1_p1 = m1.getP1().getL();
  float[] m1_p2 = m1.getP2().getL();
  float tx = m1_p1[0] - m1_p2[0];
  float ty = m1_p1[1] - m1_p2[1];
  affine.setToIdentity();
  affine.translate(tx, ty);
  return true;
}

代码示例来源：origin: dermotte/LIRE

public void minimize(Collection<PointMatch> matches) {
  // center of mass:
  float xo1 = 0, yo1 = 0;
  float xo2 = 0, yo2 = 0;
  int length = matches.size();
  for (PointMatch m : matches) {
    float[] m_p1 = m.getP1().getL();
    float[] m_p2 = m.getP2().getW();
    xo1 += m_p1[0];
    yo1 += m_p1[1];
    xo2 += m_p2[0];
    yo2 += m_p2[1];
  }
  xo1 /= length;
  yo1 /= length;
  xo2 /= length;
  yo2 /= length;
  float dx = xo1 - xo2; // reversed, because the second will be moved relative to the first
  float dy = yo1 - yo2;
  affine.setToIdentity();
  affine.translate(-dx, -dy);
}

代码示例来源：origin: dermotte/LIRE

public void minimize(Collection<PointMatch> matches) {
  // center of mass:
  float xo1 = 0, yo1 = 0;
  float xo2 = 0, yo2 = 0;
  int length = matches.size();
  for (PointMatch m : matches) {
    float[] m_p1 = m.getP1().getL();
    float[] m_p2 = m.getP2().getW();
    xo1 += m_p1[0];
    yo1 += m_p1[1];
    xo2 += m_p2[0];
    yo2 += m_p2[1];
  }
  xo1 /= length;
  yo1 /= length;
  xo2 /= length;
  yo2 /= length;
  float dx = xo1 - xo2; // reversed, because the second will be moved relative to the first
  float dy = yo1 - yo2;
  affine.setToIdentity();
  affine.translate(-dx, -dy);
}

代码示例来源：origin: stackoverflow.com

g2d.drawPolygon(p1);
g2d.drawPolygon(p2);
at.setToIdentity();
at.translate(w / 2, h / 2);
at.scale(scale, scale);

代码示例来源：origin: dermotte/LIRE

affine.setToIdentity();
affine.rotate(-angle, xo2, yo2);
affine.translate(-dx, -dy);

代码示例来源：origin: dermotte/LIRE

affine.setToIdentity();
affine.rotate(-angle, xo2, yo2);
affine.translate(-dx, -dy);

代码示例来源：origin: geotools/geotools

while (Math.abs(currOffset) <= labelOffset * 2 && !painted) {
  tx.setToIdentity();
  Rectangle2D labelEnvelope;
  double maxAngleChange = 0;

代码示例来源：origin: org.icepdf.os/icepdf-core

private static AffineTransform createRotation(Point2D point,
                       Point2D startOfLine,
                       Point2D endOfLine) {
  AffineTransform tx = new AffineTransform();
  Line2D.Double line = new Line2D.Double(startOfLine, endOfLine);
  tx.setToIdentity();
  double angle = Math.atan2(line.y2 - line.y1, line.x2 - line.x1);
  tx.translate(point.getX(), point.getY());
  tx.rotate(angle - (Math.PI / 2));
  return tx;
}

代码示例来源：origin: geotools/geotools

while (Math.abs(currOffset) <= (labelOffset * 2) && !painted) {
  tx.setToIdentity();
  double maxAngleChange = 0;
  boolean curved = false;

代码示例来源：origin: net.sf.jung/jung-visualization

public void setToIdentity() {
    inverse = null;
    transform.setToIdentity();
    fireStateChanged();
  }
}

代码示例来源：origin: jrtom/jung

/**
 * setter for the scale fires a PropertyChangeEvent with the AffineTransforms representing the
 * previous and new values for scale and offset
 *
 * @param scalex the amount to scale in the x direction
 * @param scaley the amount to scale in the y direction
 * @param from the point to transform
 */
public void setScale(double scalex, double scaley, Point2D from) {
 transform.setToIdentity();
 scale(scalex, scaley, from);
}

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