void DrawGLWidget::initializeGL()
{
// Init variables
useLighting=true;
ambientColor.assign(0.2,0.2,0.2);
lightDirection.assign(-1.0,-1.0,-1.0);
lightDirection.normalize();
lightDirection.scale(-1.0);
lightColor.assign(0.8);
// Init Angles
angleX = -30.0;
velAngleX = 0.0;
angleY = 0.0;
velAngleY = 0.0;
accelAngle = 0.1;
zDepth = -6.0;
// Init Javascript Matrix (ClientSide)
WMatrix4x4 worldTransform;
worldTransform.setToIdentity();
jsMatrix_ = createJavaScriptMatrix4();
setJavaScriptMatrix4(jsMatrix_, worldTransform);
rotMatrix=createJavaScriptMatrix4();
//setClientSideWalkHandler(rotMatrix,0.01,0.01);
setClientSideLookAtHandler(rotMatrix,0,0,0,0,1,0,0.007,0.007);
// Init Texture pointer
initShaders();
initBuffers();
initTextures();
viewport(0, 0, 500, 500);
clearColor(0, 0, 0, 1.0);
enable(DEPTH_TEST);
}
void DrawGLWidget::paintGL()
{
clear(COLOR_BUFFER_BIT | DEPTH_BUFFER_BIT);
// Reset Z-buffer, enable Z-buffering
// Draw Cube
// set perspective matrix
WMatrix4x4 pMatrix;
pMatrix.perspective(45,1,0.1,100.0);
uniformMatrix4(pMatrixUniform_, pMatrix);
//set model-view matrix
WMatrix4x4 mvMatrix;
mvMatrix.setToIdentity();
mvMatrix.translate(0.0,0.0,zDepth);
//WMatrix4x4 rotMatrix;
//rotMatrix.rotate(angleX,-1.0, 0.0, 0.0);
//rotMatrix.rotate(angleY, 0.0, 1.0, 0.0);
uniformMatrix4(cMatrixUniform_, rotMatrix);
//set model-view matrix
uniformMatrix4(mvMatrixUniform_, mvMatrix);
//
uniformMatrix4(nMatrixUniform_, rotMatrix.inverted().transposed());
activeTexture(TEXTURE0);
bindTexture(TEXTURE_2D,texture);
uniform1i(samplerUniform_,0);
uniform1i(useLightingUniform_,useLighting);
uniform3f(ambientColorUniform_,ambientColor.values[0],ambientColor.values[1],ambientColor.values[2]);
uniform3f(lightingDirectionUniform_,lightDirection.values[0],lightDirection.values[1],lightDirection.values[2]);
uniform3f(directionalColorUniform_,lightColor.values[0],lightColor.values[1],lightColor.values[2]);
bindBuffer(ARRAY_BUFFER, cubeVertexPositionBuffer);
vertexAttribPointer(vertexPositionAttribute_,
cubeVertices.itemsize_, // size: Every vertex has an X, Y and Z component
FLOAT, // type: They are floats
false, // normalized: Please, do NOT normalize the vertices
0, // stride: The first byte of the next vertex is located this
// amount of bytes further. The format of the VBO is
// vx, vy, vz, nx, ny, nz and every element is a
// Float32, hence 4 bytes large
0); // offset: The byte position of the first vertex in the buffer
bindBuffer(ARRAY_BUFFER, cubeVertexNormalBuffer);
vertexAttribPointer(vertexNormalAttribute_,
cubeNormals.itemsize_, // size: Every vertex has an X, Y and Z component
FLOAT, // type: They are floats
false, // normalized: Please, do NOT normalize the vertices
0, // stride: The first byte of the next vertex is located this
// amount of bytes further. The format of the VBO is
// vx, vy, vz, nx, ny, nz and every element is a
// Float32, hence 4 bytes large
0); // offset: The byte position of the first vertex in the buffer
bindBuffer(ARRAY_BUFFER, cubeTextureCoordBuffer);
vertexAttribPointer(textureCoordAttribute_,
cubeTexCoord.itemsize_, // size: Every vertex has RGBA components
FLOAT, // type: They are floats
false, // normalized: Please, do NOT normalize the vertices
0, // stride: The first byte of the next vertex is located this
// amount of bytes further. The format of the VBO is
// vx, vy, vz, nx, ny, nz and every element is a
// Float32, hence 4 bytes large
0); // offset: The byte position of the first vertex in the buffer*/
bindBuffer(ELEMENT_ARRAY_BUFFER, cubeVertexIndexBuffer);
drawElements(TRIANGLES,cubeIndices.numel_,UNSIGNED_SHORT,0);
}
void DrawGLWidget::paintGL()
{
clear(COLOR_BUFFER_BIT | DEPTH_BUFFER_BIT);
// Reset Z-buffer, enable Z-buffering
bindBuffer(ARRAY_BUFFER, triangleVertexPositionBuffer);
// set perspective matrix
WMatrix4x4 pMatrix;
pMatrix.perspective(45,1,0.1,100.0);
jsMatrix_ = createJavaScriptMatrix4();
setJavaScriptMatrix4(jsMatrix_, pMatrix);
uniformMatrix4(pMatrixUniform_, jsMatrix_);
//set model-view matrix
WMatrix4x4 mvMatrix;
mvMatrix.setToIdentity();
mvMatrix.translate(-1.5,0.0,-7.0);
setJavaScriptMatrix4(jsMatrix_, mvMatrix);
uniformMatrix4(mvMatrixUniform_, jsMatrix_);
vertexAttribPointer(vertexPositionAttribute_,
3, // size: Every vertex has an X, Y and Z component
FLOAT, // type: They are floats
false, // normalized: Please, do NOT normalize the vertices
3*4, // stride: The first byte of the next vertex is located this
// amount of bytes further. The format of the VBO is
// vx, vy, vz, nx, ny, nz and every element is a
// Float32, hence 4 bytes large
0); // offset: The byte position of the first vertex in the buffer
bindBuffer(ARRAY_BUFFER, triangleVertexColorBuffer);
vertexAttribPointer(vertexColorAttribute_,
4, // size: Every vertex has an X, Y and Z component
FLOAT, // type: They are floats
false, // normalized: Please, do NOT normalize the vertices
4*4, // stride: The first byte of the next vertex is located this
// amount of bytes further. The format of the VBO is
// vx, vy, vz, nx, ny, nz and every element is a
// Float32, hence 4 bytes large
0); // offset: The byte position of the first vertex in the buffer
drawArrays(TRIANGLES, 0, 3);
bindBuffer(ARRAY_BUFFER, squareVertexPositionBuffer);
// set perspective matrix
setJavaScriptMatrix4(jsMatrix_, pMatrix);
uniformMatrix4(pMatrixUniform_, jsMatrix_);
//set model-view matrix
mvMatrix.translate(3.0,0.0,0.0);
setJavaScriptMatrix4(jsMatrix_, mvMatrix);
uniformMatrix4(mvMatrixUniform_, jsMatrix_);
vertexAttribPointer(vertexPositionAttribute_,
3, // size: Every vertex has an X, Y and Z component
FLOAT, // type: They are floats
false, // normalized: Please, do NOT normalize the vertices
3*4, // stride: The first byte of the next vertex is located this
// amount of bytes further. The format of the VBO is
// vx, vy, vz, nx, ny, nz and every element is a
// Float32, hence 4 bytes large
0); // offset: The byte position of the first vertex in the buffer
bindBuffer(ARRAY_BUFFER, squareVertexColorBuffer);
vertexAttribPointer(vertexColorAttribute_,
4, // size: Every vertex has an X, Y and Z component
FLOAT, // type: They are floats
false, // normalized: Please, do NOT normalize the vertices
4*4, // stride: The first byte of the next vertex is located this
// amount of bytes further. The format of the VBO is
// vx, vy, vz, nx, ny, nz and every element is a
// Float32, hence 4 bytes large
0); // offset: The byte position of the first vertex in the buffer
drawArrays(TRIANGLE_STRIP, 0, 4); // What are you going to draw, Offset , Number of elements
}
