From ba2e09672bf88ed1016fc82bd88ac87df0a5b3a1 Mon Sep 17 00:00:00 2001 From: LaG1924 <12997935+LaG1924@users.noreply.github.com> Date: Tue, 20 Jun 2017 19:25:21 +0500 Subject: 2017-06-20 --- src/graphics/Frustrum.cpp | 111 ---------------------------------------------- 1 file changed, 111 deletions(-) delete mode 100644 src/graphics/Frustrum.cpp (limited to 'src/graphics/Frustrum.cpp') diff --git a/src/graphics/Frustrum.cpp b/src/graphics/Frustrum.cpp deleted file mode 100644 index 75f47c5..0000000 --- a/src/graphics/Frustrum.cpp +++ /dev/null @@ -1,111 +0,0 @@ -#include "Frustrum.hpp" - -enum FrustumSide { - RIGHT = 0, // The RIGHT side of the frustum - LEFT = 1, // The LEFT side of the frustum - BOTTOM = 2, // The BOTTOM side of the frustum - TOP = 3, // The TOP side of the frustum - BACK = 4, // The BACK side of the frustum - FRONT = 5 // The FRONT side of the frustum -}; - -enum PlaneData { - A = 0, // The X value of the plane's normal - B = 1, // The Y value of the plane's normal - C = 2, // The Z value of the plane's normal - D = 3 // The distance the plane is from the origin -}; - -void normalizePlane(glm::vec4 &frustum_plane) { - float magnitude = (float) sqrt(frustum_plane[A] * frustum_plane[A] + frustum_plane[B] * frustum_plane[B] + - frustum_plane[C] * frustum_plane[C]); - frustum_plane[A] /= magnitude; - frustum_plane[B] /= magnitude; - frustum_plane[C] /= magnitude; - frustum_plane[D] /= magnitude; -} - -void Frustum::CalculateFrustum(glm::mat4 &view_matrix, glm::mat4 &proj_matrix) { - float proj[16]; - float modl[16]; - const float *projP = glm::value_ptr(proj_matrix); - const float *modlP = glm::value_ptr(view_matrix); - for (int i = 0; i < 16; i++) { - proj[i]=projP[i]; - modl[i]=modlP[i]; - } - - float clip[16]; //clipping planes - - clip[0] = modl[0] * proj[0] + modl[1] * proj[4] + modl[2] * proj[8] + modl[3] * proj[12]; - clip[1] = modl[0] * proj[1] + modl[1] * proj[5] + modl[2] * proj[9] + modl[3] * proj[13]; - clip[2] = modl[0] * proj[2] + modl[1] * proj[6] + modl[2] * proj[10] + modl[3] * proj[14]; - clip[3] = modl[0] * proj[3] + modl[1] * proj[7] + modl[2] * proj[11] + modl[3] * proj[15]; - - clip[4] = modl[4] * proj[0] + modl[5] * proj[4] + modl[6] * proj[8] + modl[7] * proj[12]; - clip[5] = modl[4] * proj[1] + modl[5] * proj[5] + modl[6] * proj[9] + modl[7] * proj[13]; - clip[6] = modl[4] * proj[2] + modl[5] * proj[6] + modl[6] * proj[10] + modl[7] * proj[14]; - clip[7] = modl[4] * proj[3] + modl[5] * proj[7] + modl[6] * proj[11] + modl[7] * proj[15]; - - clip[8] = modl[8] * proj[0] + modl[9] * proj[4] + modl[10] * proj[8] + modl[11] * proj[12]; - clip[9] = modl[8] * proj[1] + modl[9] * proj[5] + modl[10] * proj[9] + modl[11] * proj[13]; - clip[10] = modl[8] * proj[2] + modl[9] * proj[6] + modl[10] * proj[10] + modl[11] * proj[14]; - clip[11] = modl[8] * proj[3] + modl[9] * proj[7] + modl[10] * proj[11] + modl[11] * proj[15]; - - clip[12] = modl[12] * proj[0] + modl[13] * proj[4] + modl[14] * proj[8] + modl[15] * proj[12]; - clip[13] = modl[12] * proj[1] + modl[13] * proj[5] + modl[14] * proj[9] + modl[15] * proj[13]; - clip[14] = modl[12] * proj[2] + modl[13] * proj[6] + modl[14] * proj[10] + modl[15] * proj[14]; - clip[15] = modl[12] * proj[3] + modl[13] * proj[7] + modl[14] * proj[11] + modl[15] * proj[15]; - - frustum_planes[RIGHT][A] = clip[3] - clip[0]; - frustum_planes[RIGHT][B] = clip[7] - clip[4]; - frustum_planes[RIGHT][C] = clip[11] - clip[8]; - frustum_planes[RIGHT][D] = clip[15] - clip[12]; - normalizePlane(frustum_planes[RIGHT]); - - frustum_planes[LEFT][A] = clip[3] + clip[0]; - frustum_planes[LEFT][B] = clip[7] + clip[4]; - frustum_planes[LEFT][C] = clip[11] + clip[8]; - frustum_planes[LEFT][D] = clip[15] + clip[12]; - normalizePlane(frustum_planes[LEFT]); - - frustum_planes[BOTTOM][A] = clip[3] + clip[1]; - frustum_planes[BOTTOM][B] = clip[7] + clip[5]; - frustum_planes[BOTTOM][C] = clip[11] + clip[9]; - frustum_planes[BOTTOM][D] = clip[15] + clip[13]; - normalizePlane(frustum_planes[BOTTOM]); - - frustum_planes[TOP][A] = clip[3] - clip[1]; - frustum_planes[TOP][B] = clip[7] - clip[5]; - frustum_planes[TOP][C] = clip[11] - clip[9]; - frustum_planes[TOP][D] = clip[15] - clip[13]; - normalizePlane(frustum_planes[TOP]); - - frustum_planes[BACK][A] = clip[3] - clip[2]; - frustum_planes[BACK][B] = clip[7] - clip[6]; - frustum_planes[BACK][C] = clip[11] - clip[10]; - frustum_planes[BACK][D] = clip[15] - clip[14]; - normalizePlane(frustum_planes[BACK]); - - frustum_planes[FRONT][A] = clip[3] + clip[2]; - frustum_planes[FRONT][B] = clip[7] + clip[6]; - frustum_planes[FRONT][C] = clip[11] + clip[10]; - frustum_planes[FRONT][D] = clip[15] + clip[14]; - normalizePlane(frustum_planes[FRONT]); -} - -bool Frustum::TestInsideFrustrum(glm::vec4 Min, glm::vec4 Max) { - bool inside = true; - //test all 6 frustum planes - for (int i = 0; i < 6; i++) { - //pick closest point to plane and check if it behind the plane - //if yes - object outside frustum - float d = std::max(Min.x * frustum_planes[i].x, Max.x * frustum_planes[i].x) - + std::max(Min.y * frustum_planes[i].y, Max.y * frustum_planes[i].y) - + std::max(Min.z * frustum_planes[i].z, Max.z * frustum_planes[i].z) - + frustum_planes[i].w; - inside &= d > 0; - //return false; //with flag works faster - } - return inside; -} -- cgit v1.2.3