comparison: src/gl/axesprogram.cpp
src/gl/axesprogram.cpp
- changeset 234
- 87ee9824210b
- parent 216
- c7241f504117
- child 245
- a41ccc6924e3
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| 233:5509bec02c81 | 234:87ee9824210b |
|---|---|
| 14 * | 14 * |
| 15 * You should have received a copy of the GNU General Public License | 15 * You should have received a copy of the GNU General Public License |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 */ | 17 */ |
| 18 | 18 |
| 19 #include <QPainter> | |
| 20 #include <QPainterPath> | |
| 19 #include "axesprogram.h" | 21 #include "axesprogram.h" |
| 22 #include "gl/partrenderer.h" | |
| 20 | 23 |
| 21 static constexpr char vertexShaderSource[] = R"( | 24 static constexpr char vertexShaderSource[] = R"( |
| 22 #version 330 core | 25 #version 330 core |
| 23 | 26 |
| 24 layout (location = 0) in vec3 in_position; | 27 layout (location = 0) in vec3 in_position; |
| 85 }, | 88 }, |
| 86 }); | 89 }); |
| 87 this->shader.bufferData(&data[0], countof(data), sizeof data[0]); | 90 this->shader.bufferData(&data[0], countof(data), sizeof data[0]); |
| 88 } | 91 } |
| 89 | 92 |
| 93 void drawBorderedText(QPainter* painter, const QPointF& point, const QFont& font, const QString& text) | |
| 94 { | |
| 95 QPainterPath path; | |
| 96 path.addText(point, font, text); | |
| 97 painter->save(); | |
| 98 painter->setBrush(Qt::white); | |
| 99 painter->setPen({Qt::black, 0.1 * font.pointSizeF()}); | |
| 100 painter->drawPath(path); | |
| 101 painter->restore(); | |
| 102 } | |
| 103 | |
| 104 void AxesLayer::overpaint(QPainter* painter) | |
| 105 { | |
| 106 QFont font; | |
| 107 font.setStyle(QFont::StyleItalic); | |
| 108 font.setBold(true); | |
| 109 painter->setFont(font); | |
| 110 QFontMetrics fontMetrics{font}; | |
| 111 const auto renderText = [&](const QString& text, const PointOnRectagle& intersection) | |
| 112 { | |
| 113 QPointF position = toQPointF(intersection.position); | |
| 114 const RectangleSide side = intersection.side; | |
| 115 switch (side) | |
| 116 { | |
| 117 case RectangleSide::Top: | |
| 118 position += QPointF{0, static_cast<qreal>(fontMetrics.ascent())}; | |
| 119 break; | |
| 120 case RectangleSide::Left: | |
| 121 break; | |
| 122 case RectangleSide::Bottom: | |
| 123 position += QPointF{0, static_cast<qreal>(-fontMetrics.descent())}; | |
| 124 break; | |
| 125 case RectangleSide::Right: | |
| 126 position += QPointF{static_cast<qreal>(-fontMetrics.horizontalAdvance(text)), 0}; | |
| 127 break; | |
| 128 } | |
| 129 drawBorderedText(painter, position, font, text); | |
| 130 }; | |
| 131 const QRectF box {QPointF{0, 0}, sizeToSizeF(this->renderer->size())}; | |
| 132 const QPointF p1 = this->renderer->modelToScreenCoordinates(glm::vec3{0, 0, 0}); | |
| 133 static const struct | |
| 134 { | |
| 135 QString text; | |
| 136 glm::vec3 direction; | |
| 137 } directions[] = | |
| 138 { | |
| 139 {"+x", {1, 0, 0}}, | |
| 140 {"-x", {-1, 0, 0}}, | |
| 141 {"+y", {0, 1, 0}}, | |
| 142 {"-y", {0, -1, 0}}, | |
| 143 {"+z", {0, 0, 1}}, | |
| 144 {"-z", {0, 0, -1}}, | |
| 145 }; | |
| 146 for (const auto& axis : directions) | |
| 147 { | |
| 148 const QPointF x_p = this->renderer->modelToScreenCoordinates(axis.direction); | |
| 149 const auto intersection = rayRectangleIntersection( | |
| 150 rayFromPoints(toVec2(p1), toVec2(x_p)), | |
| 151 box); | |
| 152 if (intersection.has_value()) | |
| 153 { | |
| 154 renderText(axis.text, *intersection); | |
| 155 } | |
| 156 } | |
| 157 } | |
| 158 | |
| 90 void AxesLayer::paintGL() | 159 void AxesLayer::paintGL() |
| 91 { | 160 { |
| 92 glLineWidth(5); | 161 glLineWidth(5); |
| 93 glEnable(GL_LINE_SMOOTH); | 162 glEnable(GL_LINE_SMOOTH); |
| 94 glHint(GL_LINE_SMOOTH_HINT, GL_NICEST); | 163 glHint(GL_LINE_SMOOTH_HINT, GL_NICEST); |
