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Fixing frustum perspective bug

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This commit is contained in:
Bradley Austin Davis 2015-06-21 15:53:24 -07:00
parent 012b0973b9
commit 4ccdc78866
1 changed files with 4 additions and 3 deletions
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7
libraries/octree/src/ViewFrustum.cpp
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@ -65,9 +65,10 @@ void ViewFrustum::setProjection(const glm::mat4& projection) {
_farClip = -_corners[BOTTOM_LEFT_FAR].z;
_aspectRatio = (_corners[TOP_RIGHT_NEAR].x - _corners[BOTTOM_LEFT_NEAR].x) /
(_corners[TOP_RIGHT_NEAR].y - _corners[BOTTOM_LEFT_NEAR].y);
glm::vec3 right = glm::normalize(glm::vec3(_corners[TOP_RIGHT_NEAR]));
glm::vec3 left = glm::normalize(glm::vec3(_corners[TOP_LEFT_NEAR]));
_fieldOfView = abs(glm::degrees(glm::angle(right, left)));
vec4 top = _inverseProjection * vec4(0, 1, -1, 1);
top /= top.w;
static const vec3 center(0, 0, -1);
_fieldOfView = glm::degrees(2.0f * abs(glm::angle(center, glm::normalize(vec3(top)))));
}
// ViewFrustum::calculateViewFrustum()