@Override
protected void reshape(int width, int height) {
MatrixStack persMatrix = new MatrixStack();
persMatrix.perspective(45.0f, (width / (float) height), zNear, zFar);
ProjectionBlock projData = new ProjectionBlock();
projData.cameraToClipMatrix = persMatrix.top();
glBindBuffer(GL_UNIFORM_BUFFER, projectionUniformBuffer);
glBufferSubData(GL_UNIFORM_BUFFER, 0, projData.fillAndFlipBuffer(mat4Buffer));
glBindBuffer(GL_UNIFORM_BUFFER, 0);
glViewport(0, 0, width, height);
}
private void initializePrograms() {
smoothInterp = loadProgram("SmoothVertexColors.vert", "SmoothVertexColors.frag");
linearInterp = loadProgram("NoCorrectVertexColors.vert", "NoCorrectVertexColors.frag");
MatrixStack persMatrix = new MatrixStack();
persMatrix.perspective(60.0f, 1.0f, zNear, zFar);
glUseProgram(smoothInterp.theProgram);
glUniformMatrix4(
smoothInterp.cameraToClipMatrixUnif, false, persMatrix.top().fillAndFlipBuffer(mat4Buffer));
glUseProgram(linearInterp.theProgram);
glUniformMatrix4(
linearInterp.cameraToClipMatrixUnif, false, persMatrix.top().fillAndFlipBuffer(mat4Buffer));
glUseProgram(0);
}
@Override
protected void display() {
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClearDepth(1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
MatrixStack modelMatrix = new MatrixStack();
modelMatrix.setMatrix(viewPole.calcMatrix());
Vec4 lightDirCameraSpace = Mat4.mul(modelMatrix.top(), lightDirection);
glUseProgram(whiteDiffuseColor.theProgram);
glUniform3(whiteDiffuseColor.dirToLightUnif, lightDirCameraSpace.fillAndFlipBuffer(vec4Buffer));
glUseProgram(vertexDiffuseColor.theProgram);
glUniform3(
vertexDiffuseColor.dirToLightUnif, lightDirCameraSpace.fillAndFlipBuffer(vec4Buffer));
glUseProgram(0);
{
modelMatrix.push();
// Render the ground plane.
{
modelMatrix.push();
glUseProgram(whiteDiffuseColor.theProgram);
glUniformMatrix4(
whiteDiffuseColor.modelToCameraMatrixUnif,
false,
modelMatrix.top().fillAndFlipBuffer(mat4Buffer));
Mat3 normMatrix = new Mat3(modelMatrix.top());
glUniformMatrix3(
whiteDiffuseColor.normalModelToCameraMatrixUnif,
false,
normMatrix.fillAndFlipBuffer(mat3Buffer));
glUniform4f(whiteDiffuseColor.lightIntensityUnif, 1.0f, 1.0f, 1.0f, 1.0f);
planeMesh.render();
glUseProgram(0);
modelMatrix.pop();
}
// Render the Cylinder
{
modelMatrix.push();
modelMatrix.applyMatrix(objtPole.calcMatrix());
if (drawColoredCyl) {
glUseProgram(vertexDiffuseColor.theProgram);
glUniformMatrix4(
vertexDiffuseColor.modelToCameraMatrixUnif,
false,
modelMatrix.top().fillAndFlipBuffer(mat4Buffer));
Mat3 normMatrix = new Mat3(modelMatrix.top());
glUniformMatrix3(
vertexDiffuseColor.normalModelToCameraMatrixUnif,
false,
normMatrix.fillAndFlipBuffer(mat3Buffer));
glUniform4f(vertexDiffuseColor.lightIntensityUnif, 1.0f, 1.0f, 1.0f, 1.0f);
cylinderMesh.render("lit-color");
} else {
glUseProgram(whiteDiffuseColor.theProgram);
glUniformMatrix4(
whiteDiffuseColor.modelToCameraMatrixUnif,
false,
modelMatrix.top().fillAndFlipBuffer(mat4Buffer));
Mat3 normMatrix = new Mat3(modelMatrix.top());
glUniformMatrix3(
whiteDiffuseColor.normalModelToCameraMatrixUnif,
false,
normMatrix.fillAndFlipBuffer(mat3Buffer));
glUniform4f(whiteDiffuseColor.lightIntensityUnif, 1.0f, 1.0f, 1.0f, 1.0f);
cylinderMesh.render("lit");
}
glUseProgram(0);
modelMatrix.pop();
}
modelMatrix.pop();
}
}