implement shading modes switch for heightmap

data/layout.xml

@@ -285,9 +285,9 @@
               </node>
             </node>
             <node height="30" pad="1" width="100%" dir="row">
-              <combobox id="grid-heightmap-shading" text="Normal" width="100%" height="30" combo-list="Transparent,Flat,Solid" default="0"/>
+              <combobox id="grid-heightmap-shading" width="100%" height="30" combo-list="Transparent,Flat,Solid" default="0"/>
             </node>
-            <node height="20" pad="1" width="100%"><slider-h id="grid-heightmap-wireframe"/></node>
+            <node height="20" pad="1" width="100%"><slider-h id="grid-heightmap-wireframe" value="1.0"/></node>
             <node height="20" pad="1" width="100%"><slider-h id="grid-heightmap-height" value="0.25"/></node>
             <node height="20" pad="1" width="100%"><slider-h id="grid-heightmap-lyaw" value="0.5"/></node>
             <node height="20" pad="1" width="100%"><slider-h id="grid-heightmap-lpitch" value="0.5"/></node>
@@ -1120,10 +1120,11 @@ Here's a list of what's available in this release.
             <!--Colors-->
             <!--<panel-color id="panel-color"/>-->
             <!--Grids-->
-            <panel-grid/>
+            <!--<panel-grid/>-->
           </scroll>
         </node>
         <!-- timeline -->
+        <!--
         <node height="100%" width="1" grow="1" dir="col" justify="flex-start" rtl="ltr">
           <border color=".3 .3 .3 .4" height="50" width="100%" pad="10" dir="row">
             <text text="Timeline: " font-face="arial" font-size="11" margin="8 10 0 0"/>
@@ -1133,6 +1134,7 @@ Here's a list of what's available in this release.
             </node>
           </border>
         </node>
+        -->
         
         <!--<node height="100%" width="1" grow="1" dir="col" align="center" justify="flex-start" rtl="ltr">
           <border border-color="0 0 0 0" thickness="2" color=".2 .2 .2 .6" pad="10" dir="row" margin="2 0 0 0">

src/node_canvas.cpp

@@ -297,16 +297,28 @@ void NodeCanvas::draw()
             * glm::scale(glm::vec3(1, glm::pow(App::I.grid->m_hm_height->get_value() - 0.5f, 3.f) * 10.f, 1))
             * glm::eulerAngleX(glm::radians(90.f));
 
-
         // DRAW SOLID
-        glDisable(GL_BLEND);
+        if (App::I.grid->m_shade_mode == NodePanelGrid::ShadeMode::Solid)
-        ShaderManager::use(kShader::Lambert);
+        {
-        ShaderManager::u_mat4(kShaderUniform::MVP, mvp);
+            glDisable(GL_BLEND);
-        auto light_yaw = App::I.grid->m_hm_lyaw->get_value() * glm::pi<float>() * 2.f;
+            ShaderManager::use(kShader::Lambert);
-        auto light_pitch = App::I.grid->m_hm_lpitch->get_value();
+            ShaderManager::u_mat4(kShaderUniform::MVP, mvp);
-        auto light_pos = glm::vec3(sinf(light_yaw), cosf(light_yaw), light_pitch);
+            auto light_yaw = App::I.grid->m_hm_lyaw->get_value() * glm::pi<float>() * 2.f;
-        ShaderManager::u_vec3(kShaderUniform::LightDir, glm::normalize(-light_pos));
+            auto light_pitch = App::I.grid->m_hm_lpitch->get_value();
-        App::I.grid->m_hm_plane.draw_fill();
+            auto light_pos = glm::vec3(sinf(light_yaw), cosf(light_yaw), light_pitch);
+            ShaderManager::u_vec3(kShaderUniform::LightDir, glm::normalize(-light_pos));
+            App::I.grid->m_hm_plane.draw_fill();
+        }
+        else if (App::I.grid->m_shade_mode == NodePanelGrid::ShadeMode::Flat)
+        {
+            ShaderManager::use(kShader::Color);
+            ShaderManager::u_vec4(kShaderUniform::Col, glm::vec4(
+                glm::vec3(1.f - App::I.grid->m_groud_value->get_value()),
+                App::I.grid->m_groud_opacity->get_value()
+            ));
+            ShaderManager::u_mat4(kShaderUniform::MVP, mvp);
+            App::I.grid->m_hm_plane.draw_fill();
+        }
 
         // DRAW GRIDS
         if (App::I.grid->m_hm_wireframe->get_value() > 0.f)
@@ -319,9 +331,12 @@ void NodeCanvas::draw()
                 App::I.grid->m_hm_wireframe->get_value()
             ));
             ShaderManager::u_mat4(kShaderUniform::MVP, mvp);
-            //glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+            if (App::I.grid->m_shade_mode == NodePanelGrid::ShadeMode::Transparent)
-            //App::I.grid->m_hm_plane.draw_fill();
+            {
-            //glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+                glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+                App::I.grid->m_hm_plane.draw_fill();
+                glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+            }
             App::I.grid->m_hm_plane.draw_stroke();
         }
 

src/node_combobox.cpp

@@ -19,6 +19,8 @@ void NodeComboBox::clone_copy(Node* dest) const
 void NodeComboBox::loaded()
 {
     NodeButton::loaded();
+    m_text->set_text(m_data[m_current_index].c_str());
+    m_selected_child_index = m_current_index;
     on_click = [this](Node* target) {
         NodePopupMenu* popup = new NodePopupMenu;
         popup->init();

src/node_panel_grid.cpp

@@ -37,6 +37,10 @@ void NodePanelGrid::init_controls()
     m_hm_height = find<NodeSliderH>("grid-heightmap-height");
     m_hm_lyaw = find<NodeSliderH>("grid-heightmap-lyaw");
     m_hm_lpitch = find<NodeSliderH>("grid-heightmap-lpitch");
+    m_hm_shading = find<NodeComboBox>("grid-heightmap-shading");
+
+    m_hm_preview->SetHeight(0);
+    m_hm_plane.create(1, 1, 100);
 
     //m_hm_height->on_value_changed = update_hm;
     m_groud_resolution->on_value_changed = [this](Node* target, float v) {
@@ -46,9 +50,10 @@ void NodePanelGrid::init_controls()
             m_hm_plane.create(1, 1, 100 * v * 5.f);
         LOG("resolution value %f", v);
     };
-    m_hm_preview->SetHeight(0);
 
-    m_hm_plane.create(1, 1, 100);
+    m_hm_shading->on_select = [this](Node*, int index) {
+        m_shade_mode = (ShadeMode)index;
+    };
 
     m_hm_load->on_click = [this](Node*) {
         App::I.pick_image([this](std::string path) {

src/node_panel_grid.h

@@ -13,6 +13,8 @@
 class NodePanelGrid : public Node
 {
 public:
+    enum class ShadeMode : uint8_t { Transparent, Flat, Solid };
+
     NodeSliderH* m_groud_opacity;
     NodeSliderH* m_groud_value;
     NodeSliderH* m_groud_resolution;
@@ -29,6 +31,7 @@ public:
     HeightmapPlane m_hm_plane;
     Image m_hm_image;
     std::string m_file_path;
+    ShadeMode m_shade_mode{ ShadeMode::Transparent };
 
     virtual Node* clone_instantiate() const override;
     virtual void clone_finalize(Node* dest) const override;