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gizmo - translate triangles are facing camera

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This commit is contained in:
Mikulas Florek 2015-10-20 00:48:12 +02:00
parent 9e144bb6b7
commit 458355222e
1 changed files with 11 additions and 3 deletions
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14
src/editor/gizmo.cpp
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@ -194,24 +194,29 @@ void Gizmo::setCameraRay(const Vec3& origin, const Vec3& cursor_dir)
if (m_mode == Mode::TRANSLATE)
{
Matrix triangle_mtx = mtx;
if (dotProduct(gizmo_mtx.getXVector(), m_camera_dir) < 0) triangle_mtx.setXVector(-triangle_mtx.getXVector());
if (dotProduct(gizmo_mtx.getYVector(), m_camera_dir) < 0) triangle_mtx.setYVector(-triangle_mtx.getYVector());
if (dotProduct(gizmo_mtx.getZVector(), m_camera_dir) < 0) triangle_mtx.setZVector(-triangle_mtx.getZVector());
float t, tmin = FLT_MAX;
bool hit = Math::getRayTriangleIntersection(
origin, cursor_dir, pos, pos + mtx.getXVector() * 0.5f, pos + mtx.getYVector() * 0.5f, &t);
origin, cursor_dir, pos, pos + triangle_mtx.getXVector() * 0.5f, pos + triangle_mtx.getYVector() * 0.5f, &t);
if (hit)
{
tmin = t;
m_transform_axis = Axis::XY;
}
hit = Math::getRayTriangleIntersection(
origin, cursor_dir, pos, pos + mtx.getYVector() * 0.5f, pos + mtx.getZVector() * 0.5f, &t);
origin, cursor_dir, pos, pos + triangle_mtx.getYVector() * 0.5f, pos + triangle_mtx.getZVector() * 0.5f, &t);
if (hit && t < tmin)
{
tmin = t;
m_transform_axis = Axis::YZ;
}
hit = Math::getRayTriangleIntersection(
origin, cursor_dir, pos, pos + mtx.getXVector() * 0.5f, pos + mtx.getZVector() * 0.5f, &t);
origin, cursor_dir, pos, pos + triangle_mtx.getXVector() * 0.5f, pos + triangle_mtx.getZVector() * 0.5f, &t);
if (hit && t < tmin)
{
m_transform_axis = Axis::XZ;
@ -335,6 +340,9 @@ void Gizmo::renderTranslateGizmo(PipelineInstance& pipeline)
BGFX_STATE_PT_LINES | BGFX_STATE_DEPTH_TEST_LEQUAL,
m_shader->getInstance(0).m_program_handles[pipeline.getPassIdx()]);
if (dotProduct(gizmo_mtx.getXVector(), m_camera_dir) < 0) mtx.setXVector(-mtx.getXVector());
if (dotProduct(gizmo_mtx.getYVector(), m_camera_dir) < 0) mtx.setYVector(-mtx.getYVector());
if (dotProduct(gizmo_mtx.getZVector(), m_camera_dir) < 0) mtx.setZVector(-mtx.getZVector());
vertices[0].position = Vec3(0, 0, 0);
vertices[0].color = m_transform_axis == Axis::XY ? 0xff00ffff : 0xffff0000;