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-rw-r--r--src/com/mbien/opencl/demos/julia3d/UserSceneController.java249
1 files changed, 249 insertions, 0 deletions
diff --git a/src/com/mbien/opencl/demos/julia3d/UserSceneController.java b/src/com/mbien/opencl/demos/julia3d/UserSceneController.java
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+++ b/src/com/mbien/opencl/demos/julia3d/UserSceneController.java
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+package com.mbien.opencl.demos.julia3d;
+
+import com.mbien.opencl.demos.julia3d.structs.RenderingConfig;
+import com.mbien.opencl.demos.julia3d.structs.Vec;
+import java.awt.Component;
+import java.awt.Point;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseWheelEvent;
+
+import static java.lang.Math.*;
+import static com.mbien.opencl.demos.julia3d.Renderer.*;
+
+/**
+ * Utility class for interacting with a scene. Supports rotation and zoom around origin.
+ * @author Michael Bien
+ */
+public class UserSceneController {
+
+ private Point dragstart;
+ private RenderingConfig model;
+ private Renderer view;
+
+ private enum MOUSE_MODE { DRAG_ROTATE, DRAG_ZOOM }
+ private MOUSE_MODE dragmode = MOUSE_MODE.DRAG_ROTATE;
+
+
+ public void init(Renderer view, Component component, RenderingConfig model) {
+ initMouseListeners(component);
+ this.view = view;
+ this.model = model;
+ }
+
+ private void initMouseListeners(Component component) {
+
+ MouseAdapter mouseAdapter = new MouseAdapter() {
+ @Override
+ public void mouseDragged(MouseEvent e) {
+
+ int x = e.getX();
+ int y = e.getY();
+
+ switch (dragmode) {
+ case DRAG_ROTATE:
+ if (dragstart != null) {
+ int height = model.getHeight();
+ int width = model.getWidth();
+
+ int ry = height - y - 1;
+ int baseMu1 = width - MU_RECT_SIZE - 2;
+ int baseMu2 = 1;
+ int baseMu3 = width - MU_RECT_SIZE - 2;
+ int baseMu4 = MU_RECT_SIZE + 2;
+
+ if ((x >= baseMu1 && x <= baseMu1 + MU_RECT_SIZE) && (ry >= baseMu2 && ry <= baseMu2 + MU_RECT_SIZE)) {
+ float[] mu = model.getMu();
+ mu[0] = 3.f * ( x - baseMu1) / (float)MU_RECT_SIZE - 1.5f;
+ mu[1] = 3.f * (ry - baseMu2) / (float)MU_RECT_SIZE - 1.5f;
+ model.setMu(mu);
+ } else if ((x >= baseMu3 && x <= baseMu3 + MU_RECT_SIZE) && (ry >= baseMu4 && ry <= baseMu4 + MU_RECT_SIZE)) {
+ float[] mu = model.getMu();
+ mu[2] = 3.f * ( x - baseMu3) / (float)MU_RECT_SIZE - 1.5f;
+ mu[3] = 3.f * (ry - baseMu4) / (float)MU_RECT_SIZE - 1.5f;
+ model.setMu(mu);
+ } else {
+ rotateCameraYbyOrig(0.01f * (x - dragstart.getX()));
+ rotateCameraXbyOrig(0.01f * (y - dragstart.getY()));
+ }
+ }
+ dragstart = e.getPoint();
+ view.update();
+ break;
+ case DRAG_ZOOM:
+ if (dragstart != null) {
+ float zoom = (float) ((y - dragstart.getY()) / 10.0f);
+ zoom(zoom);
+ }
+ dragstart = e.getPoint();
+ view.update();
+ break;
+ }
+
+ }
+
+ @Override
+ public void mousePressed(MouseEvent e) {
+ switch (e.getButton()) {
+ case (MouseEvent.BUTTON1):
+ dragmode = MOUSE_MODE.DRAG_ROTATE;
+ break;
+ case (MouseEvent.BUTTON2):
+ dragmode = MOUSE_MODE.DRAG_ZOOM;
+ break;
+ case (MouseEvent.BUTTON3):
+ dragmode = MOUSE_MODE.DRAG_ZOOM;
+ break;
+ }
+ }
+
+ @Override
+ public void mouseReleased(MouseEvent e) {
+ switch (e.getButton()) {
+ case (MouseEvent.BUTTON1):
+ dragmode = MOUSE_MODE.DRAG_ZOOM;
+ break;
+ case (MouseEvent.BUTTON2):
+ dragmode = MOUSE_MODE.DRAG_ROTATE;
+ break;
+ case (MouseEvent.BUTTON3):
+ dragmode = MOUSE_MODE.DRAG_ROTATE;
+ break;
+ }
+
+ dragstart = null;
+ }
+
+ @Override
+ public void mouseWheelMoved(MouseWheelEvent e) {
+ float zoom = e.getWheelRotation() * 0.1f;
+ zoom(zoom);
+ view.update();
+ }
+
+ };
+
+ KeyAdapter keyAdapter = new KeyAdapter() {
+
+ @Override
+ public void keyPressed(KeyEvent e) {
+
+ switch (e.getKeyChar()) {
+ case 'l':
+ model.setEnableShadow(model.getEnableShadow()==0 ? 1 : 0);
+ break;
+ case '1':
+ model.setEpsilon(model.getEpsilon() * 0.75f);
+ break;
+ case '2':
+ model.setEpsilon(model.getEpsilon() * 1.f / 0.75f);
+ break;
+ case '3':
+ model.setMaxIterations(max(1, model.getMaxIterations() -1));
+ break;
+ case '4':
+ model.setMaxIterations(min(12, model.getMaxIterations()+1));
+ break;
+ case '5':
+ model.setSuperSamplingSize(max(1, model.getSuperSamplingSize() -1));
+ break;
+ case '6':
+ model.setSuperSamplingSize(min(5, model.getSuperSamplingSize() +1));
+ break;
+ default:
+ break;
+ }
+ view.update();
+
+ }
+
+ };
+
+ component.addKeyListener(keyAdapter);
+
+ component.addMouseListener(mouseAdapter);
+ component.addMouseMotionListener(mouseAdapter);
+ component.addMouseWheelListener(mouseAdapter);
+
+ }
+ private void zoom(float zoom) {
+ Vec orig = model.getCamera().getOrig();
+ orig.setX(orig.getX()+zoom)
+ .setY(orig.getY()+zoom)
+ .setZ(orig.getZ()+zoom);
+ }
+
+ private void rotateLightX(float k) {
+ float[] light = model.getLight();
+ float y = light[1];
+ float z = light[2];
+ light[1] = (float) ( y * cos(k) + z * sin(k));
+ light[2] = (float) (-y * sin(k) + z * cos(k));
+ model.setLight(light);
+ }
+
+ private void rotateLightY(float k) {
+ float[] light = model.getLight();
+ float x = light[0];
+ float z = light[2];
+ light[0] = (float) (x * cos(k) - z * sin(k));
+ light[2] = (float) (x * sin(k) + z * cos(k));
+ model.setLight(light);
+ }
+
+ private void rotateCameraXbyOrig(double k) {
+ Vec orig = model.getCamera().getOrig();
+ float y = orig.getY();
+ float z = orig.getZ();
+ orig.setY((float) ( y * cos(k) + z * sin(k)));
+ orig.setZ((float) (-y * sin(k) + z * cos(k)));
+ }
+
+ private void rotateCameraYbyOrig(double k) {
+ Vec orig = model.getCamera().getOrig();
+ float x = orig.getX();
+ float z = orig.getZ();
+ orig.setX((float) (x * cos(k) - z * sin(k)));
+ orig.setZ((float) (x * sin(k) + z * cos(k)));
+ }
+
+
+ public final static void vadd(Vec v, Vec a, Vec b) {
+ v.setX(a.getX() + b.getX());
+ v.setY(a.getY() + b.getY());
+ v.setZ(a.getZ() + b.getZ());
+ }
+
+ public final static void vsub(Vec v, Vec a, Vec b) {
+ v.setX(a.getX() - b.getX());
+ v.setY(a.getY() - b.getY());
+ v.setZ(a.getZ() - b.getZ());
+ }
+
+ public final static void vmul(Vec v, float s, Vec b) {
+ v.setX(s * b.getX());
+ v.setY(s * b.getY());
+ v.setZ(s * b.getZ());
+ }
+
+ public final static float vdot(Vec a, Vec b) {
+ return a.getX() * b.getX()
+ + a.getY() * b.getY()
+ + a.getZ() * b.getZ();
+ }
+
+ public final static void vnorm(Vec v) {
+ float s = (float) (1.0f / sqrt(vdot(v, v)));
+ vmul(v, s, v);
+ }
+
+ public final static void vxcross(Vec v, Vec a, Vec b) {
+ v.setX(a.getY() * b.getZ() - a.getZ() * b.getY());
+ v.setY(a.getZ() * b.getX() - a.getX() * b.getZ());
+ v.setZ(a.getX() * b.getY() - a.getY() * b.getX());
+ }
+
+
+} \ No newline at end of file
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