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2014/10/16 ¤W¤È 08:27:20
android Programming Glossary: verticesAndroid getOrientation() method returns bad results http://stackoverflow.com/questions/10192057/android-getorientation-method-returns-bad-results indices ShortBuffer _indexBuffer raw buffers to hold the vertices FloatBuffer _vertexBuffer0 FloatBuffer _vertexBuffer1 FloatBuffer.. _vertexBuffer5 int _numVertices 3 standard triangle vertices 3 FloatBuffer _textureBuffer0123 private FloatBuffer _light0Position.. 0.25f float textures0123 Mapping coordinates for the vertices UV mapping CW 0.0f 0.0f bottom left 1.0f 0.0f bottom right..
Modifying camera output using SurfaceTexture and OpenGL http://stackoverflow.com/questions/12519235/modifying-camera-output-using-surfacetexture-and-opengl 1.0f private short drawOrder 0 1 2 0 2 3 order to draw vertices static float textureVertices in counterclockwise order 1.0f..
Is Opengl Development GPU Dependant? http://stackoverflow.com/questions/17229066/is-opengl-development-gpu-dependant mProgram vPosition Enable a handle to the triangle vertices GLES20.glEnableVertexAttribArray mPositionHandle Prepare the..
Trying to draw textured triangles on device fails, but the emulator works. Why? http://stackoverflow.com/questions/2113638/trying-to-draw-textured-triangles-on-device-fails-but-the-emulator-works-why GL10.GL_TEXTURE_2D textures textureid Draw the vertices as triangles gl.glDrawElements GL10.GL_TRIANGLES indices.length.. 1 sBitmapOptions.inScaled false Here are my vertices texture coords and indices The initial vertex definition private.. The initial vertex definition private static final float vertices 1.0f 1.0f 0.0f 1.0f 1.0f 0.0f 1.0f 1.0f 0.0f 1.0f 1.0f..
How to use onSensorChanged sensor data in combination with OpenGL http://stackoverflow.com/questions/2881128/how-to-use-onsensorchanged-sensor-data-in-combination-with-opengl GL10.GL_COLOR_ARRAY load the 3 axis and there colors float vertices 0 0 0 1 0 0 0 1 0 0 0 1 float colors 0 0 0 0 1 0 0 1 0 1 0 1.. 0 1 0 2 0 3 ByteBuffer vbb vbb ByteBuffer.allocateDirect vertices.length 4 vbb.order ByteOrder.nativeOrder vertexBuffer vbb.asFloatBuffer.. vertexBuffer vbb.asFloatBuffer vertexBuffer.put vertices vertexBuffer.position 0 vbb ByteBuffer.allocateDirect colors.length..
Android OpenGL .OBJ file loader http://stackoverflow.com/questions/3162667/android-opengl-obj-file-loader an obj file you can easily convert it into arrays for the vertices normals and texture coordinates. There's a tool which converts..
Overlay images onto Camera preview SurfaceView http://stackoverflow.com/questions/3548666/overlay-images-onto-camera-preview-surfaceview is given by class Cube public Cube int one 0x10000 int vertices one one one one one one one one one one one one one one.. 6 5 3 0 1 3 1 2 ByteBuffer vbb ByteBuffer.allocateDirect vertices.length 4 vbb.order ByteOrder.nativeOrder mVertexBuffer vbb.asIntBuffer.. mVertexBuffer vbb.asIntBuffer mVertexBuffer.put vertices mVertexBuffer.position 0 ByteBuffer cbb ByteBuffer.allocateDirect..
Android: Matrix -> what is the different between preconcat and postconcat? http://stackoverflow.com/questions/3855578/android-matrix-what-is-the-different-between-preconcat-and-postconcat In computer graphics we can represent pixels or in 3D vertices as vectors. If your screen is 640x480 here's a 2D vector for..
Android Camera will not work. startPreview fails http://stackoverflow.com/questions/7942378/android-camera-will-not-work-startpreview-fails implements GLSurfaceView.Renderer private FloatBuffer vertices private FloatBuffer texcoords private int mProgram private int.. 1.0f 1.0f 1.0f 1.0f 1.0f initialize vertex Buffer for vertices ByteBuffer vbb ByteBuffer.allocateDirect triangleCoords.length.. use the device hardware's native byte order vertices vbb.asFloatBuffer create a floating point buffer from the ByteBuffer..
Android getOrientation() method returns bad results http://stackoverflow.com/questions/10192057/android-getorientation-method-returns-bad-results GLSurfaceView.Renderer Context mContext a raw buffer to hold indices ShortBuffer _indexBuffer raw buffers to hold the vertices FloatBuffer _vertexBuffer0 FloatBuffer _vertexBuffer1 FloatBuffer _vertexBuffer2 FloatBuffer _vertexBuffer3 FloatBuffer.. FloatBuffer _vertexBuffer3 FloatBuffer _vertexBuffer4 FloatBuffer _vertexBuffer5 int _numVertices 3 standard triangle vertices 3 FloatBuffer _textureBuffer0123 private FloatBuffer _light0Position private FloatBuffer _light0Ambient float _light0Position.. float coords5 0.25f 0.5f 0.25f 0.25f 0.5f 0.25f 0.25f 0.5f 0.25f float textures0123 Mapping coordinates for the vertices UV mapping CW 0.0f 0.0f bottom left 1.0f 0.0f bottom right 0.5f 1.0f top ctr _vertexBuffer0 InitFloatBuffer coords..
Modifying camera output using SurfaceTexture and OpenGL http://stackoverflow.com/questions/12519235/modifying-camera-output-using-surfacetexture-and-opengl in counterclockwise order 1.0f 1.0f 1.0f 1.0f 1.0f 1.0f 1.0f 1.0f private short drawOrder 0 1 2 0 2 3 order to draw vertices static float textureVertices in counterclockwise order 1.0f 1.0f 1.0f 0.0f 0.0f 1.0f 0.0f 0.0f private final int vertexStride..
Is Opengl Development GPU Dependant? http://stackoverflow.com/questions/17229066/is-opengl-development-gpu-dependant vPosition member mPositionHandle GLES20.glGetAttribLocation mProgram vPosition Enable a handle to the triangle vertices GLES20.glEnableVertexAttribArray mPositionHandle Prepare the triangle coordinate data GLES20.glVertexAttribPointer mPositionHandle..
Trying to draw textured triangles on device fails, but the emulator works. Why? http://stackoverflow.com/questions/2113638/trying-to-draw-textured-triangles-on-device-fails-but-the-emulator-works-why 0.0f gl.glColor4f 1.0f 1.0f 1.0f 1.0f Bind the texture gl.glBindTexture GL10.GL_TEXTURE_2D textures textureid Draw the vertices as triangles gl.glDrawElements GL10.GL_TRIANGLES indices.length GL10.GL_UNSIGNED_BYTE indexBuffer Pop the matrix back to.. 160 sBitmapOptions.inDither false sBitmapOptions.inSampleSize 1 sBitmapOptions.inScaled false Here are my vertices texture coords and indices The initial vertex definition private static final float vertices 1.0f 1.0f 0.0f 1.0f 1.0f.. false Here are my vertices texture coords and indices The initial vertex definition private static final float vertices 1.0f 1.0f 0.0f 1.0f 1.0f 0.0f 1.0f 1.0f 0.0f 1.0f 1.0f 0.0f The initial texture coordinates u v private static..
How to use onSensorChanged sensor data in combination with OpenGL http://stackoverflow.com/questions/2881128/how-to-use-onsensorchanged-sensor-data-in-combination-with-opengl GL10.GL_VERTEX_ARRAY gl.glEnableClientState GL10.GL_COLOR_ARRAY load the 3 axis and there colors float vertices 0 0 0 1 0 0 0 1 0 0 0 1 float colors 0 0 0 0 1 0 0 1 0 1 0 1 0 0 1 1 byte indices 0 1 0 2 0 3 ByteBuffer vbb vbb ByteBuffer.allocateDirect.. 0 1 float colors 0 0 0 0 1 0 0 1 0 1 0 1 0 0 1 1 byte indices 0 1 0 2 0 3 ByteBuffer vbb vbb ByteBuffer.allocateDirect vertices.length 4 vbb.order ByteOrder.nativeOrder vertexBuffer vbb.asFloatBuffer vertexBuffer.put vertices vertexBuffer.position.. vertices.length 4 vbb.order ByteOrder.nativeOrder vertexBuffer vbb.asFloatBuffer vertexBuffer.put vertices vertexBuffer.position 0 vbb ByteBuffer.allocateDirect colors.length 4 vbb.order ByteOrder.nativeOrder colorBuffer vbb.asFloatBuffer..
Android OpenGL .OBJ file loader http://stackoverflow.com/questions/3162667/android-opengl-obj-file-loader a good solution if you are still looking. Instead of loading an obj file you can easily convert it into arrays for the vertices normals and texture coordinates. There's a tool which converts obj files to c header files. You can convert the output to..
Overlay images onto Camera preview SurfaceView http://stackoverflow.com/questions/3548666/overlay-images-onto-camera-preview-surfaceview float mAngleX public float mAngleY And finally the Cube itself is given by class Cube public Cube int one 0x10000 int vertices one one one one one one one one one one one one one one one one one one one one one one one one float colors 0f.. 0 4 5 0 5 1 1 5 6 1 6 2 2 6 7 2 7 3 3 7 4 3 4 0 4 7 6 4 6 5 3 0 1 3 1 2 ByteBuffer vbb ByteBuffer.allocateDirect vertices.length 4 vbb.order ByteOrder.nativeOrder mVertexBuffer vbb.asIntBuffer mVertexBuffer.put vertices mVertexBuffer.position.. vertices.length 4 vbb.order ByteOrder.nativeOrder mVertexBuffer vbb.asIntBuffer mVertexBuffer.put vertices mVertexBuffer.position 0 ByteBuffer cbb ByteBuffer.allocateDirect colors.length 4 cbb.order ByteOrder.nativeOrder mColorBuffer..
Android: Matrix -> what is the different between preconcat and postconcat? http://stackoverflow.com/questions/3855578/android-matrix-what-is-the-different-between-preconcat-and-postconcat things unclear. I apologize in advance if that's the case. In computer graphics we can represent pixels or in 3D vertices as vectors. If your screen is 640x480 here's a 2D vector for the point in the middle of your screen forgive my shoddy markup..
Android Camera will not work. startPreview fails http://stackoverflow.com/questions/7942378/android-camera-will-not-work-startpreview-fails byte b 10 Finally the MyRender class public class MyRenderer implements GLSurfaceView.Renderer private FloatBuffer vertices private FloatBuffer texcoords private int mProgram private int maPositionHandle private int gvTexCoordHandle private int.. 1.0f 0.0f 1.0f 1.0f 0.0f float texcoordf X Y Z 1.0f 1.0f 1.0f 1.0f 1.0f 1.0f 1.0f 1.0f initialize vertex Buffer for vertices ByteBuffer vbb ByteBuffer.allocateDirect triangleCoords.length 4 vbb.order ByteOrder.nativeOrder use the device hardware's.. triangleCoords.length 4 vbb.order ByteOrder.nativeOrder use the device hardware's native byte order vertices vbb.asFloatBuffer create a floating point buffer from the ByteBuffer vertices.put triangleCoords add the coordinates to..
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