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2014/10/16 ¤W¤È 08:27:25

android Programming Glossary: vx

How do I apply a force to a body in the direction it is traveling (Box2D)?

http://stackoverflow.com/questions/11257462/how-do-i-apply-a-force-to-a-body-in-the-direction-it-is-traveling-box2d

new Vector2 body.getWorldCenter float vx body.getLinearVelocity .x vy body.getLinearVelocity .y vr float.. .x vy body.getLinearVelocity .y vr float Math.sqrt vx vx vy vy float t float Math.atan Math.abs vy vx if vr destroyerVelocity.. .x vy body.getLinearVelocity .y vr float Math.sqrt vx vx vy vy float t float Math.atan Math.abs vy vx if vr destroyerVelocity..

Android OpenGL 3D picking

http://stackoverflow.com/questions/6699387/android-opengl-3d-picking

0 modelInv 0 projInv 0 float result new float 4 float vx viewport 0 float vy viewport 1 float vw viewport 2 float vh.. float vw viewport 2 float vh viewport 3 float rhsVec 2 rx vx vw 1 2 ry vy vh 1 2 rz 1 1 android.opengl.Matrix.multiplyMV..

How do I apply a force to a body in the direction it is traveling (Box2D)?

http://stackoverflow.com/questions/11257462/how-do-i-apply-a-force-to-a-body-in-the-direction-it-is-traveling-box2d

float pSecondsElapsed body.applyForce new Vector2 0 SensorManager.GRAVITY_EARTH new Vector2 body.getWorldCenter float vx body.getLinearVelocity .x vy body.getLinearVelocity .y vr float Math.sqrt vx vx vy vy float t float Math.atan Math.abs vy.. new Vector2 body.getWorldCenter float vx body.getLinearVelocity .x vy body.getLinearVelocity .y vr float Math.sqrt vx vx vy vy float t float Math.atan Math.abs vy vx if vr destroyerVelocity if vx 0 vy 0 body.applyForce float destroyerVelocity.. new Vector2 body.getWorldCenter float vx body.getLinearVelocity .x vy body.getLinearVelocity .y vr float Math.sqrt vx vx vy vy float t float Math.atan Math.abs vy vx if vr destroyerVelocity if vx 0 vy 0 body.applyForce float destroyerVelocity..

Android OpenGL 3D picking

http://stackoverflow.com/questions/6699387/android-opengl-3d-picking

float combo new float 16 android.opengl.Matrix.multiplyMM combo 0 modelInv 0 projInv 0 float result new float 4 float vx viewport 0 float vy viewport 1 float vw viewport 2 float vh viewport 3 float rhsVec 2 rx vx vw 1 2 ry vy vh 1 2 rz 1 1 android.opengl.Matrix.multiplyMV.. result new float 4 float vx viewport 0 float vy viewport 1 float vw viewport 2 float vh viewport 3 float rhsVec 2 rx vx vw 1 2 ry vy vh 1 2 rz 1 1 android.opengl.Matrix.multiplyMV result 0 combo 0 rhsVec 0 float d 1 result 3 float endResult..