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Move texture binding to layer, and reference atlas coordinates in draw item

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This commit is contained in:
Dan Paulat 2022-10-06 00:35:22 -05:00
parent d3f7347be0
commit 0fa6ef01f0
2 changed files with 34 additions and 13 deletions
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31
scwx-qt/source/scwx/qt/gl/draw/geo_line.cpp
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@ -1,4 +1,5 @@
#include <scwx/qt/gl/draw/geo_line.hpp>
#include <scwx/qt/util/texture_atlas.hpp>
#include <scwx/common/geographic.hpp>
#include <scwx/util/logger.hpp>
@ -38,7 +39,7 @@ public:
uMVPMatrixLocation_(GL_INVALID_INDEX),
uMapMatrixLocation_(GL_INVALID_INDEX),
uMapScreenCoordLocation_(GL_INVALID_INDEX),
texture_ {GL_INVALID_INDEX},
texture_ {},
vao_ {GL_INVALID_INDEX},
vbo_ {GL_INVALID_INDEX}
{
@ -61,7 +62,8 @@ public:
GLint uMapMatrixLocation_;
GLint uMapScreenCoordLocation_;
GLuint texture_;
util::TextureAttributes texture_;
GLuint vao_;
GLuint vbo_;
@ -106,7 +108,7 @@ void GeoLine::Initialize()
}
p->texture_ =
p->context_->GetTexture(":/res/textures/lines/default-1x7.png");
util::TextureAtlas::Instance().GetTextureAttributes("lines/default-1x7");
gl.glGenVertexArrays(1, &p->vao_);
gl.glGenBuffers(1, &p->vbo_);
@ -170,9 +172,6 @@ void GeoLine::Render(const QMapbox::CustomLayerRenderParameters& params)
UseMapProjection(
params, p->uMapMatrixLocation_, p->uMapScreenCoordLocation_);
gl.glActiveTexture(GL_TEXTURE0);
gl.glBindTexture(GL_TEXTURE_2D, p->texture_);
// Draw line
gl.glDrawArrays(GL_TRIANGLES, 0, 6);
}
@ -231,17 +230,25 @@ void GeoLine::Impl::Update()
{
gl::OpenGLFunctions& gl = context_->gl();
// Latitude and longitude coordinates in degrees
const float lx = points_[0].latitude_;
const float rx = points_[1].latitude_;
const float by = points_[0].longitude_;
const float ty = points_[1].longitude_;
// Offset x/y in pixels
const double i = points_[1].longitude_ - points_[0].longitude_;
const double j = points_[1].latitude_ - points_[0].latitude_;
const double angle = std::atan2(i, j) * 180.0 / M_PI;
const float ox = width_ * 0.5f * std::cosf(angle);
const float oy = width_ * 0.5f * std::sinf(angle);
// Texture coordinates
const float ls = texture_.sLeft_;
const float rs = texture_.sRight_;
const float tt = texture_.tTop_;
const float bt = texture_.tBottom_;
float mc0 = 1.0f;
float mc1 = 1.0f;
float mc2 = 1.0f;
@ -262,12 +269,12 @@ void GeoLine::Impl::Update()
{ //
// Line
{
{lx, by, -ox, -oy, 0.0f, 1.0f, mc0, mc1, mc2, mc3}, // BL
{lx, by, +ox, +oy, 0.0f, 0.0f, mc0, mc1, mc2, mc3}, // TL
{rx, ty, -ox, -oy, 1.0f, 1.0f, mc0, mc1, mc2, mc3}, // BR
{rx, ty, -ox, -oy, 1.0f, 1.0f, mc0, mc1, mc2, mc3}, // BR
{rx, ty, +ox, +oy, 1.0f, 0.0f, mc0, mc1, mc2, mc3}, // TR
{lx, by, +ox, +oy, 0.0f, 0.0f, mc0, mc1, mc2, mc3} // TL
{lx, by, -ox, -oy, ls, bt, mc0, mc1, mc2, mc3}, // BL
{lx, by, +ox, +oy, ls, tt, mc0, mc1, mc2, mc3}, // TL
{rx, ty, -ox, -oy, rs, bt, mc0, mc1, mc2, mc3}, // BR
{rx, ty, -ox, -oy, rs, bt, mc0, mc1, mc2, mc3}, // BR
{rx, ty, +ox, +oy, rs, tt, mc0, mc1, mc2, mc3}, // TR
{lx, by, +ox, +oy, ls, tt, mc0, mc1, mc2, mc3} // TL
}};
gl.glBufferData(GL_ARRAY_BUFFER,