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Commit 400dcc3

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Chapter 09 completed.
1 parent 39d6a9e commit 400dcc3

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29 files changed

+75
-84
lines changed

29 files changed

+75
-84
lines changed

‎09-Fractal-Drawing/07-Snowflake-Fractal/src/AlgoFrame.java‎ renamed to ‎09-Fractal-Drawing/08-Snowflake-Fractal/src/AlgoFrame.java‎

Lines changed: 3 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -1,8 +1,4 @@
1-
import java.awt.Graphics2D;
2-
import java.awt.Graphics;
3-
import java.awt.Dimension;
4-
import java.awt.Color;
5-
import java.awt.RenderingHints;
1+
import java.awt.*;
62
import javax.swing.*;
73

84
public class AlgoFrame extends JFrame{
@@ -93,8 +89,8 @@ private void drawFractal(Graphics2D g, double x1, double y1, double side, double
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double y4 = y3 - side_3 * Math.sin((angle-60.0)*Math.PI/180.0);
9490
drawFractal(g, x3, y3, side_3, angle-60.0, depth+1);
9591

96-
double x5 = x4 + side_3 * Math.cos(angle*Math.PI/180.0);
97-
double y5 = y4 - side_3 * Math.sin(angle*Math.PI/180.0);
92+
// double x5 = x4 + side_3 * Math.cos(angle*Math.PI/180.0);
93+
// double y5 = y4 - side_3 * Math.sin(angle*Math.PI/180.0);
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drawFractal(g, x4, y4, side_3, angle, depth+1);
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return;
File renamed without changes.
Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -11,8 +11,8 @@ public class AlgoVisualizer {
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public AlgoVisualizer(int depth, int side){
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data = new FractalData(depth);
14-
int sceneWidth = 3*side+3;
15-
int sceneHeight = side;
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int sceneWidth = side;
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int sceneHeight = side/3;
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EventQueue.invokeLater(() -> {
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frame = new AlgoFrame("Fractal Visualizer", sceneWidth,sceneHeight);
@@ -54,7 +54,7 @@ public void keyReleased(KeyEvent event){
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public static void main(String[] args) {
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int depth = 6;
57-
int side = 300;
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int side = 900;
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AlgoVisualizer vis = new AlgoVisualizer(depth, side);
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}
File renamed without changes.
Lines changed: 8 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -63,29 +63,30 @@ public void paintComponent(Graphics g) {
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g2d.addRenderingHints(hints);
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// 具体绘制
66-
drawFractal(g2d, canvasWidth/2, canvasHeight, canvasHeight/2, 0, 0);
66+
drawFractal(g2d, canvasWidth/2, canvasHeight, canvasHeight, 0, 0);
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}
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private void drawFractal(Graphics2D g, double x1, double y1, double side, double angle, int depth){
7070

71-
if(side <= 0)
71+
double side_2 = side / 2;
72+
73+
if(side_2 <= 0)
7274
return;
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if( depth == data.depth ){
75-
double x2 = x1 - side * 2 * Math.sin(angle*Math.PI/180.0);
76-
double y2 = y1 - side * 2 * Math.cos(angle*Math.PI/180.0);
77+
double x2 = x1 - side * Math.sin(angle*Math.PI/180.0);
78+
double y2 = y1 - side * Math.cos(angle*Math.PI/180.0);
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AlgoVisHelper.setColor(g, AlgoVisHelper.Indigo);
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AlgoVisHelper.drawLine(g, x1, y1, x2, y2);
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return;
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}
8183

82-
double x2 = x1 - side * Math.sin(angle*Math.PI/180.0);
83-
double y2 = y1 - side * Math.cos(angle*Math.PI/180.0);
84+
double x2 = x1 - side_2 * Math.sin(angle*Math.PI/180.0);
85+
double y2 = y1 - side_2 * Math.cos(angle*Math.PI/180.0);
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AlgoVisHelper.setColor(g, AlgoVisHelper.Indigo);
8587
AlgoVisHelper.drawLine(g, x1, y1, x2, y2);
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drawFractal(g, x2, y2, side/2, angle+data.splitAngle/2, depth+1);
88-
8990
drawFractal(g, x2, y2, side/2, angle-data.splitAngle/2, depth+1);
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return;
File renamed without changes.
Lines changed: 4 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -8,9 +8,9 @@ public class AlgoVisualizer {
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private FractalData data;
99
private AlgoFrame frame;
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11-
public AlgoVisualizer(int sceneWidth, int sceneHeight, int depth, double splitAngle){
11+
public AlgoVisualizer(int sceneWidth, int sceneHeight, int maxDepth, double splitAngle){
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13-
data = new FractalData(depth, splitAngle);
13+
data = new FractalData(maxDepth, splitAngle);
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1515
EventQueue.invokeLater(() -> {
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frame = new AlgoFrame("Fractal Visualizer", sceneWidth,sceneHeight);
@@ -51,11 +51,11 @@ public void keyReleased(KeyEvent event){
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5252
public static void main(String[] args) {
5353

54-
int depth = 6;
54+
int maxDepth = 6;
5555
double splitAngle = 60.0;
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int sceneWidth = 800;
5757
int sceneHeight = 800;
5858

59-
AlgoVisualizer vis = new AlgoVisualizer(sceneWidth, sceneHeight, depth, splitAngle);
59+
AlgoVisualizer vis = new AlgoVisualizer(sceneWidth, sceneHeight, maxDepth, splitAngle);
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}
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}
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