void renderCamSetupGL ( Scene& scene, int prog )
{
// Set model, view, projection matrices
Camera3D* cam = scene.getCamera ();
Matrix4F ident;
ident.Identity();
glProgramUniformMatrix4fv( prog, scene.getParam(prog, UMODEL), 1, GL_FALSE, ident.GetDataF() );
glProgramUniformMatrix4fv( prog, scene.getParam(prog, UVIEW), 1, GL_FALSE, cam->getViewMatrix().GetDataF() );
glProgramUniformMatrix4fv( prog, scene.getParam(prog, UPROJ), 1, GL_FALSE, cam->getProjMatrix().GetDataF() );
}
void Camera3D::updateFrustum ()
{
Matrix4F mv;
mv = tileproj_matrix; // Compute the model-view-projection matrix
mv *= view_matrix;
float* mvm = mv.GetDataF();
float t;
// Right plane
frustum[0][0] = mvm[ 3] - mvm[ 0];
frustum[0][1] = mvm[ 7] - mvm[ 4];
frustum[0][2] = mvm[11] - mvm[ 8];
frustum[0][3] = mvm[15] - mvm[12];
t = sqrt( frustum[0][0] * frustum[0][0] + frustum[0][1] * frustum[0][1] + frustum[0][2] * frustum[0][2] );
frustum[0][0] /= t; frustum[0][1] /= t; frustum[0][2] /= t; frustum[0][3] /= t;
// Left plane
frustum[1][0] = mvm[ 3] + mvm[ 0];
frustum[1][1] = mvm[ 7] + mvm[ 4];
frustum[1][2] = mvm[11] + mvm[ 8];
frustum[1][3] = mvm[15] + mvm[12];
t = sqrt( frustum[1][0] * frustum[1][0] + frustum[1][1] * frustum[1][1] + frustum[1][2] * frustum[1][2] );
frustum[1][0] /= t; frustum[1][1] /= t; frustum[1][2] /= t; frustum[1][3] /= t;
// Bottom plane
frustum[2][0] = mvm[ 3] + mvm[ 1];
frustum[2][1] = mvm[ 7] + mvm[ 5];
frustum[2][2] = mvm[11] + mvm[ 9];
frustum[2][3] = mvm[15] + mvm[13];
t = sqrt( frustum[2][0] * frustum[2][0] + frustum[2][1] * frustum[2][1] + frustum[2][2] * frustum[2][2] );
frustum[2][0] /= t; frustum[2][1] /= t; frustum[2][2] /= t; frustum[2][3] /= t;
// Top plane
frustum[3][0] = mvm[ 3] - mvm[ 1];
frustum[3][1] = mvm[ 7] - mvm[ 5];
frustum[3][2] = mvm[11] - mvm[ 9];
frustum[3][3] = mvm[15] - mvm[13];
t = sqrt( frustum[3][0] * frustum[3][0] + frustum[3][1] * frustum[3][1] + frustum[3][2] * frustum[3][2] );
frustum[3][0] /= t; frustum[3][1] /= t; frustum[3][2] /= t; frustum[3][3] /= t;
// Far plane
frustum[4][0] = mvm[ 3] - mvm[ 2];
frustum[4][1] = mvm[ 7] - mvm[ 6];
frustum[4][2] = mvm[11] - mvm[10];
frustum[4][3] = mvm[15] - mvm[14];
t = sqrt( frustum[4][0] * frustum[4][0] + frustum[4][1] * frustum[4][1] + frustum[4][2] * frustum[4][2] );
frustum[4][0] /= t; frustum[4][1] /= t; frustum[4][2] /= t; frustum[4][3] /= t;
// Near plane
frustum[5][0] = mvm[ 3] + mvm[ 2];
frustum[5][1] = mvm[ 7] + mvm[ 6];
frustum[5][2] = mvm[11] + mvm[10];
frustum[5][3] = mvm[15] + mvm[14];
t = sqrt( frustum[5][0] * frustum[5][0] + frustum[5][1] * frustum[5][1] + frustum[5][2] * frustum[5][2] );
frustum[5][0] /= t; frustum[5][1] /= t; frustum[5][2] /= t; frustum[5][3] /= t;
}
