From 0c244ee74a7320689f5646d5266a4697e4cc33b4 Mon Sep 17 00:00:00 2001 From: kappa1 Date: Wed, 3 Jun 2009 18:29:05 +0000 Subject: [PATCH] Added Mouse Support to Gears Applet, This will allow rotating the view using the mouse. Fixed view ratio to support all sizes. --- .../org/lwjgl/test/applet/GearsApplet.java | 71 +++++++++++++------ 1 file changed, 51 insertions(+), 20 deletions(-) diff --git a/src/java/org/lwjgl/test/applet/GearsApplet.java b/src/java/org/lwjgl/test/applet/GearsApplet.java index 9b41a4cc..82ccbf94 100644 --- a/src/java/org/lwjgl/test/applet/GearsApplet.java +++ b/src/java/org/lwjgl/test/applet/GearsApplet.java @@ -9,6 +9,7 @@ import org.lwjgl.LWJGLException; import org.lwjgl.opengl.ARBTransposeMatrix; import org.lwjgl.opengl.Display; import org.lwjgl.input.Keyboard; +import org.lwjgl.input.Mouse; import org.lwjgl.opengl.GL11; import org.lwjgl.opengl.GLContext; @@ -23,17 +24,21 @@ public class GearsApplet extends Applet { /** is the game loop running */ boolean running = false; - private float view_rotx = 20.0f; - private float view_roty = 30.0f; - private float view_rotz = 0.0f; - private int gear1; - private int gear2; - private int gear3; - private float angle = 0.0f; + /** variables used to rotate the view */ + private float view_rotx = 20.0f; + private float view_roty = 30.0f; + private float view_rotz = 0.0f; + private int gear1; + private int gear2; + private int gear3; + private float angle; boolean keyDown = false; + private int prevMouseX, prevMouseY; + private boolean mouseButtonDown = false; + /** * Once the Canvas is created its add notify method will call this method to @@ -44,7 +49,6 @@ public class GearsApplet extends Applet { public void run() { running = true; try { - System.out.println("display_parent.isDisplayable() = " + display_parent.isDisplayable()); Display.setParent(display_parent); //Display.setVSyncEnabled(true); Display.create(); @@ -138,18 +142,34 @@ public class GearsApplet extends Applet { } else { long timeUsed = 5000 + (startTime - System.currentTimeMillis()); startTime = System.currentTimeMillis() + 5000; -/* System.out.println(fps + " frames 2 in " + (float) (timeUsed / 1000f) + " seconds = " - + (fps / (timeUsed / 1000f)));*/ + System.out.println(fps + " frames 2 in " + (float) (timeUsed / 1000f) + " seconds = " + + (fps / (timeUsed / 1000f))); fps = 0; } - if (Keyboard.isKeyDown(Keyboard.KEY_LEFT)) - view_roty += .1f; - else if (Keyboard.isKeyDown(Keyboard.KEY_RIGHT)) - view_roty -= .1f; + if (Mouse.isButtonDown(0)) { + if (!mouseButtonDown) { + prevMouseX = Mouse.getX(); + prevMouseY= Mouse.getY(); + } + mouseButtonDown = true; + } + else { + mouseButtonDown = false; + } - if (Keyboard.isKeyDown(Keyboard.KEY_F)) { - keyDown = true; + if (mouseButtonDown) { + int x = Mouse.getX(); + int y = Mouse.getY(); + + float thetaY = 360.0f * ( (float)(x-prevMouseX)/(float)display_parent.getWidth()); + float thetaX = 360.0f * ( (float)(prevMouseY-y)/(float)display_parent.getHeight()); + + prevMouseX = x; + prevMouseY = y; + + view_rotx += thetaX; + view_roty += thetaY; } // F Key Pressed (i.e. released) @@ -174,25 +194,31 @@ public class GearsApplet extends Applet { public void drawLoop() { GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT); + GL11.glPushMatrix(); + GL11.glRotatef(view_rotx, 1.0f, 0.0f, 0.0f); GL11.glRotatef(view_roty, 0.0f, 1.0f, 0.0f); GL11.glRotatef(view_rotz, 0.0f, 0.0f, 1.0f); + GL11.glPushMatrix(); GL11.glTranslatef(-3.0f, -2.0f, 0.0f); GL11.glRotatef(angle, 0.0f, 0.0f, 1.0f); GL11.glCallList(gear1); GL11.glPopMatrix(); + GL11.glPushMatrix(); GL11.glTranslatef(3.1f, -2.0f, 0.0f); GL11.glRotatef(-2.0f * angle - 9.0f, 0.0f, 0.0f, 1.0f); GL11.glCallList(gear2); GL11.glPopMatrix(); + GL11.glPushMatrix(); GL11.glTranslatef(-3.1f, 4.2f, 0.0f); GL11.glRotatef(-2.0f * angle - 25.0f, 0.0f, 0.0f, 1.0f); GL11.glCallList(gear3); GL11.glPopMatrix(); + GL11.glPopMatrix(); } @@ -203,6 +229,7 @@ public class GearsApplet extends Applet { FloatBuffer red = FloatBuffer.wrap(new float[] { 0.8f, 0.1f, 0.0f, 1.0f}); FloatBuffer green = FloatBuffer.wrap(new float[] { 0.0f, 0.8f, 0.2f, 1.0f}); FloatBuffer blue = FloatBuffer.wrap(new float[] { 0.2f, 0.2f, 1.0f, 1.0f}); + GL11.glLight(GL11.GL_LIGHT0, GL11.GL_POSITION, pos); GL11.glEnable(GL11.GL_CULL_FACE); GL11.glEnable(GL11.GL_LIGHTING); @@ -215,11 +242,13 @@ public class GearsApplet extends Applet { GL11.glMaterial(GL11.GL_FRONT, GL11.GL_AMBIENT_AND_DIFFUSE, red); gear(1.0f, 4.0f, 1.0f, 20, 0.7f); GL11.glEndList(); + gear2 = GL11.glGenLists(1); GL11.glNewList(gear2, GL11.GL_COMPILE); GL11.glMaterial(GL11.GL_FRONT, GL11.GL_AMBIENT_AND_DIFFUSE, green); gear(0.5f, 2.0f, 2.0f, 10, 0.7f); GL11.glEndList(); + gear3 = GL11.glGenLists(1); GL11.glNewList(gear3, GL11.GL_COMPILE); GL11.glMaterial(GL11.GL_FRONT, GL11.GL_AMBIENT_AND_DIFFUSE, blue); @@ -227,11 +256,13 @@ public class GearsApplet extends Applet { GL11.glEndList(); GL11.glEnable(GL11.GL_NORMALIZE); GL11.glMatrixMode(GL11.GL_PROJECTION); -/* System.err.println("GL_VENDOR: " + GL11.glGetString(GL11.GL_VENDOR)); + + System.err.println("GL_VENDOR: " + GL11.glGetString(GL11.GL_VENDOR)); System.err.println("GL_RENDERER: " + GL11.glGetString(GL11.GL_RENDERER)); System.err.println("GL_VERSION: " + GL11.glGetString(GL11.GL_VERSION)); System.err.println(); - System.err.println("glLoadTransposeMatrixfARB() supported: " + GLContext.getCapabilities().GL_ARB_transpose_matrix);*/ + System.err.println("glLoadTransposeMatrixfARB() supported: " + GLContext.getCapabilities().GL_ARB_transpose_matrix); + if (!GLContext.getCapabilities().GL_ARB_transpose_matrix) { // --- not using extensions GL11.glLoadIdentity(); @@ -243,7 +274,7 @@ public class GearsApplet extends Applet { identityTranspose.flip(); ARBTransposeMatrix.glLoadTransposeMatrixARB(identityTranspose); } - float h = (float) 300 / (float) 300; + float h = (float) display_parent.getHeight() / (float) display_parent.getWidth(); GL11.glFrustum(-1.0f, 1.0f, -h, h, 5.0f, 60.0f); GL11.glMatrixMode(GL11.GL_MODELVIEW); GL11.glLoadIdentity(); @@ -362,4 +393,4 @@ public class GearsApplet extends Applet { } GL11.glEnd(); } -} +} \ No newline at end of file