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User:Hg200: Difference between revisions
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(Created page with "= Investigations on update_camera() = In the second part of <math display="inline">\rightarrow</math> axes::properties::update_camera () the view transformation "x_gl_mat1" a...") |
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// Construct a 4x4 matrix "x_view" that is a subset of "x_gl_mat1" | // Construct a 4x4 matrix "x_view" that is a subset of "x_gl_mat1" | ||
// Start with identity I = [1,0,0,0; 0,1,0,0; 0,0,1,0; 0,0,0,1] | |||
Matrix x_view = xform_matrix (); | Matrix x_view = xform_matrix (); | ||
// #7 -> #8 | // Step #7 -> #8 | ||
scale (x_view, 1, 1, -1); | scale (x_view, 1, 1, -1); | ||
Matrix l = xform_matrix (); | Matrix l = xform_matrix (); | ||
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l(1,0) = u(0); l(1,1) = u(1); l(1,2) = u(2); | l(1,0) = u(0); l(1,1) = u(1); l(1,2) = u(2); | ||
l(2,0) = -f(0); l(2,1) = -f(1); l(2,2) = -f(2); | l(2,0) = -f(0); l(2,1) = -f(1); l(2,2) = -f(2); | ||
// #6 -> #7 (rotate on the Z axis) | // Step #6 -> #7 (rotate on the Z axis) | ||
x_view = x_view * l; | x_view = x_view * l; | ||
// #5 -> #6 | // Step #5 -> #6 | ||
translate (x_view, -c_eye(0), -c_eye(1), -c_eye(2)); | translate (x_view, -c_eye(0), -c_eye(1), -c_eye(2)); | ||
// #4 -> #5 | // Step #4 -> #5 | ||
scale (x_view, pb(0), pb(1), pb(2)); | scale (x_view, pb(0), pb(1), pb(2)); | ||
// #3 -> #4 | // Step #3 -> #4 | ||
translate (x_view, -0.5, -0.5, -0.5); | translate (x_view, -0.5, -0.5, -0.5); | ||
</syntaxhighlight>}} | </syntaxhighlight>}} | ||