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Enable easy access to screen space points for AABB3s through DebugRenderer

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This commit is contained in:
Erik Broberg
2016-06-21 12:25:38 -04:00
parent 51bb575ac6
commit f4a1d12089
2 changed files with 34 additions and 0 deletions
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27
modules/debugging/rendering/debugrenderer.cpp
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@@ -208,4 +208,31 @@ namespace openspace {
glEnable(GL_CULL_FACE);
}
void DebugRenderer::renderAABB2(const AABB2& screenSpaceAABB, glm::vec4 rgba) const {
std::vector<vec4> vertices(4);
vertices[0] = vec4(screenSpaceAABB.min.x, screenSpaceAABB.min.y, 1, 1);
vertices[1] = vec4(screenSpaceAABB.min.x, screenSpaceAABB.max.y, 1, 1);
vertices[2] = vec4(screenSpaceAABB.max.x, screenSpaceAABB.min.y, 1, 1);
vertices[3] = vec4(screenSpaceAABB.max.x, screenSpaceAABB.max.y, 1, 1);
renderVertices(vertices, GL_LINES, rgba);
}
const std::vector<glm::vec4> DebugRenderer::screenSpacePointsFor(const AABB3& screenSpaceAABB) const {
std::vector<vec4> vertices(8);
for (size_t i = 0; i < 8; i++) {
bool cornerIsRight = i % 2 == 0;
bool cornerIsUp = i > 3;
bool cornerIsFar = (i / 2) % 2 == 1;
double x = cornerIsRight ? screenSpaceAABB.max.x : screenSpaceAABB.min.x;
double y = cornerIsUp ? screenSpaceAABB.max.y : screenSpaceAABB.min.y;
double z = cornerIsFar ? screenSpaceAABB.max.z : screenSpaceAABB.min.z;
vertices[i] = vec4(x, y, z, 1);
}
return std::move(vertices);
}
} // namespace openspace