Initial implementation of rotation in GeometryView

2025-12-11 18:34:58 +01:00 · 2020-05-16 13:41:08 +02:00
parent 4527d0dd1f
commit 22a6dc63e9
7 changed files with 447 additions and 82 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -266,7 +266,7 @@ set(VMIX_RSC_FILES
    ./rsc/mesh/border_round.ply
    ./rsc/mesh/border_sharp.ply
    ./rsc/mesh/border_large_round.ply
-    ./rsc/mesh/border_handles_sharp.ply
+    ./rsc/mesh/border_handles_rotation.ply
    ./rsc/mesh/border_handles_overlay.ply
    ./rsc/mesh/border_large_sharp.ply
    ./rsc/mesh/border_vertical_overlay.ply
--- a/Mesh.cpp
+++ b/Mesh.cpp
@@ -456,6 +456,10 @@ void Frame::accept(Visitor& v)
 Handles::Handles(Type type) : Node(), type_(type)
 {
    color   = glm::vec4( 1.f, 1.f, 1.f, 1.f);
+
+    if ( type_ == ROTATE )
+        handle_ = new Mesh("mesh/border_handles_rotation.ply");
+    else
        handle_ = new Mesh("mesh/border_handles_overlay.ply");
 }

@@ -517,7 +521,10 @@ void Handles::draw(glm::mat4 modelview, glm::mat4 projection)
            handle_->draw( ctm, projection );
        }
        else if ( type_ == ROTATE ){
-
+            // only once in upper top right corner
+            ctm = modelview * glm::translate(glm::identity<glm::mat4>(), glm::vec3(ar + 0.06f, +1.06f, 0.f));
+            ctm[0][0] = ctm[1][1] = ctm[2][2] = 1.f;
+            handle_->draw( ctm, projection );
        }
    }
 }
--- a/PickingVisitor.cpp
+++ b/PickingVisitor.cpp
@@ -99,7 +99,8 @@ void PickingVisitor::visit(Handles &n)
                   bb.translated(glm::vec3(0.f, -1.f, 0.f)).contains( glm::vec3(P) ) );
    }
    else if ( n.type() == Handles::ROTATE ){
-        // TODO Picking Rotation
+        // Picking Rotation icon
+        picked = bb.translated(glm::vec3(1.06f, +1.06f, 0.f)).contains( glm::vec3(P) );
    }

    if ( picked )
--- a/Source.cpp
+++ b/Source.cpp
@@ -90,8 +90,6 @@ void Source::accept(Visitor& v)

 void Source::setOverlayVisible(bool on)
 {
-//    if (overlay_)
-//        overlay_->visible_ = on;
    for (auto o = overlays_.begin(); o != overlays_.end(); o++)
        (*o).second->visible_ = on;
 }
@@ -144,7 +142,7 @@ MediaSource::MediaSource(const std::string &name) : Source(name), path_("")
    frame->color = glm::vec4( 0.8f, 0.8f, 0.0f, 1.f);
    overlays_[View::MIXING]->attach(frame);

-    // extra overlay for geometry view
+    // extra overlays for geometry view
    frame = new Frame(Frame::SHARP_LARGE);
    frame->color = glm::vec4( 0.8f, 0.8f, 0.0f, 1.f);
    frame->translation_.z = 0.1;
@@ -161,6 +159,10 @@ MediaSource::MediaSource(const std::string &name) : Source(name), path_("")
    resize_V_handle_->color = glm::vec4( 0.8f, 0.8f, 0.0f, 1.f);
    resize_V_handle_->translation_.z = 0.15;
    overlays_[View::GEOMETRY]->attach(resize_V_handle_);
+    rotate_handle_ = new Handles(Handles::ROTATE);
+    rotate_handle_->color = glm::vec4( 0.8f, 0.8f, 0.0f, 1.f);
+    rotate_handle_->translation_.z = 0.15;
+    overlays_[View::GEOMETRY]->attach(rotate_handle_);

 }

@@ -263,12 +265,15 @@ void MediaSource::render()
        mediasurface_->draw(glm::identity<glm::mat4>(), projection);
        renderbuffer_->end();

+        // ADJUST alpha based on MIXING node
        // read position of the mixing node and interpret this as transparency of render output
        float alpha = 1.0 - CLAMP( SQUARE( glm::length(groups_[View::MIXING]->translation_) ), 0.f, 1.f );
        blendingshader_->color.a = alpha;

-        // TODO modify geometry
+        // MODIFY geometry based on GEOMETRY node
        groups_[View::RENDERING]->translation_ = groups_[View::GEOMETRY]->translation_;
+        groups_[View::RENDERING]->scale_ = groups_[View::GEOMETRY]->scale_;
+        groups_[View::RENDERING]->rotation_ = groups_[View::GEOMETRY]->rotation_;

    }
 }
--- a/View.cpp
+++ b/View.cpp
@@ -2,6 +2,7 @@
 #include <glad/glad.h>
 #include <glm/glm.hpp>
 #include <glm/gtc/matrix_transform.hpp>
+#include <glm/gtx/vector_angle.hpp>

 // memmove
 #include <string.h>
@@ -12,10 +13,10 @@
 #include "Source.h"
 #include "Primitives.h"
 #include "PickingVisitor.h"
-#include "Resource.h"
 #include "Mesh.h"
 #include "Mixer.h"
 #include "FrameBuffer.h"
+#include "UserInterfaceManager.h"
 #include "Log.h"

 #define CIRCLE_PIXELS 64
@@ -194,7 +195,7 @@ RenderView::~RenderView()

 void RenderView::setResolution(glm::vec3 resolution)
 {
-    if (resolution.x < 100.f || resolution.y < 100)
+    if (resolution.x < 128.f || resolution.y < 128.f)
        resolution = FrameBuffer::getResolutionFromParameters(Settings::application.framebuffer_ar, Settings::application.framebuffer_h);

    if (frame_buffer_)
@@ -289,33 +290,38 @@ void GeometryView::grab (glm::vec2 from, glm::vec2 to, Source *s, std::pair<Node
        return;
    Group *sourceNode = s->group(View::GEOMETRY);

-    // remember
-    static glm::vec2 start_position = glm::vec2(0.f);
+    // remember source transform at moment of clic at position 'from'
+    static glm::vec2 start_clic_position = glm::vec2(0.f);
    static glm::vec3 start_translation = glm::vec3(0.f);
    static glm::vec3 start_scale = glm::vec3(1.f);
-    if ( start_position != from ) {
-        start_position = from;
+    static glm::vec3 start_rotation = glm::vec3(0.f);
+    if ( start_clic_position != from ) {
+        start_clic_position = from;
        start_translation = sourceNode->translation_;
        start_scale = sourceNode->scale_;
+        start_rotation = sourceNode->rotation_;
    }

-    // grab coordinates in scene View reference frame
+    // grab coordinates in scene-View reference frame
    glm::vec3 gl_Position_from = Rendering::manager().unProject(from, scene.root()->transform_);
    glm::vec3 gl_Position_to = Rendering::manager().unProject(to, scene.root()->transform_);

-    // grab coordinates in source root reference frame
+    // grab coordinates in source-root reference frame
    glm::vec4 S_from = glm::inverse(sourceNode->transform_) * glm::vec4( gl_Position_from,  1.f );
    glm::vec4 S_to = glm::inverse(sourceNode->transform_) * glm::vec4( gl_Position_to,  1.f );
    glm::vec3 S_resize = glm::vec3(S_to) / glm::vec3(S_from);

 //    Log::Info(" screen coordinates ( %.1f, %.1f ) ", to.x, to.y);
 //    Log::Info(" scene  coordinates ( %.1f, %.1f ) ", gl_Position_to.x, gl_Position_to.y);
-//    Log::Info(" source coordinates ( %.1f, %.1f ) ", P_to.x, P_to.y);
+//    Log::Info(" source coordinates ( %.1f, %.1f, %.1f ) ", S_from.x, S_from.y, S_from.z);
+//    Log::Info("                    ( %.1f, %.1f, %.1f ) ", S_to.x, S_to.y, S_to.z);

    // which manipulation to perform?
    if (pick.first)  {
        // picking on the resizing handles in the corners
        if ( pick.first == s->handleNode(Handles::RESIZE) ) {
+            if (UserInterface::manager().keyboardModifier())
+                S_resize.y = S_resize.x;
            sourceNode->scale_ = start_scale * S_resize;
        }
        // picking on the resizing handles left or right
@@ -326,9 +332,10 @@ void GeometryView::grab (glm::vec2 from, glm::vec2 to, Source *s, std::pair<Node
        else if ( pick.first == s->handleNode(Handles::RESIZE_V) ) {
            sourceNode->scale_ = start_scale * glm::vec3(1.f, S_resize.y, 1.f);
        }
-        // TODO picking on the rotating handle
+        // picking on the rotating handle
        else if ( pick.first == s->handleNode(Handles::ROTATE) ) {
-
+            float angle = glm::orientedAngle( glm::normalize(glm::vec2(S_from)), glm::normalize(glm::vec2(S_to)));
+            sourceNode->rotation_ = start_rotation + glm::vec3(0.f, 0.f, angle);
        }
        // picking anywhere but on a handle: user wants to move the source
        else {
@@ -340,60 +347,5 @@ void GeometryView::grab (glm::vec2 from, glm::vec2 to, Source *s, std::pair<Node
        sourceNode->translation_ = start_translation + gl_Position_to - gl_Position_from;
    }

-//    // coordinate in source
-//    glm::mat4 modelview(1.f);
-//    glm::vec2 clicpos(0.f);
-////    PickingVisitor pv(gl_Position_to);
-////    sourceNode->accept(pv);
-////    if (!pv.picked().empty()){
-////        clicpos = pv.picked().back().second;
-//////        modelview = pv.picked().back().first->transform_;
-//////        Log::Info("clic pos source %.2f. %.2f", clicpos.x, clicpos.y);
-////    }
-
-
-//    glm::vec4 P_from = glm::inverse(sourceNode->transform_ * modelview) * glm::vec4( gl_Position_from,  1.f );
-//    glm::vec4 P_to = glm::inverse(sourceNode->transform_ * modelview) * glm::vec4( gl_Position_to,  1.f );
-
-
-////    glm::vec4 P = glm::inverse(sourceNode->transform_ * modelview) * glm::vec4( gl_Position_to,  1.f );
-
-
-//    if ( pick.first == s->handleNode(Handles::RESIZE) )
-//    {
-//        // clic inside corner
-////        Log::Info("corner %.2f. %.2f", clicpos.x, clicpos.y);
-//////        Log::Info("       %.2f. %.2f", P.x, P.y);
-
-//////        glm::vec2 topos = clicpos;
-//////        PickingVisitor pv(gl_Position_from);
-//////        sourceNode->accept(pv);
-
-//////        if (!pv.picked().empty()){
-//////            topos = pv.picked().back().second;
-////////            Log::Info("scale %.2f. %.2f", topos.x, topos.y);
-//////        }
-
-//////        glm::vec4 P = glm::inverse(sourceNode->transform_ * modelview) * glm::vec4( gl_Position_from,  1.f );
-
-
-//        sourceNode->scale_ = start_scale * (glm::vec3(P_to) / glm::vec3(P_from) );
-////        Log::Info("scale %.2f. %.2f", sourceNode->scale_.x, sourceNode->scale_.y);
-////        Log::Info("      %.2f. %.2f", start_scale.x, start_scale.y);
-//    }
-//    else if ( ABS(clicpos.x)>0.95f && ABS(clicpos.y)<0.05f )
-//    {
-//        // clic resize horizontal
-//        Log::Info("H resize %.2f. %.2f", clicpos.x, clicpos.y);
-//    }
-//    else if ( ABS(clicpos.x)<0.05f && ABS(clicpos.y)>0.95f )
-//    {
-//        // clic resize vertical
-//        Log::Info("V resize %.2f. %.2f", clicpos.x, clicpos.y);
-//    }
-//    else
-        // clic inside source: compute delta translation
-//        sourceNode->translation_ = start_translation + gl_Position_to - gl_Position_from;
-
 }

--- a/rsc/mesh/border_handles_overlay.ply
+++ b/rsc/mesh/border_handles_overlay.ply
@@ -8,14 +8,14 @@ property float z
 element face 8
 property list uchar uint vertex_indices
 end_header
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 3 0 1 2
 3 2 3 4
 3 3 5 4
--- a/rsc/mesh/border_handles_rotation.ply
+++ b/rsc/mesh/border_handles_rotation.ply
@@ -0,0 +1,400 @@
+ply
+format ascii 1.0
+comment Created by Blender 2.82 (sub 7) - www.blender.org, source file: 'border_large_sharp_2.blend'
+element vertex 195
+property float x
+property float y
+property float z
+property uchar red
+property uchar green
+property uchar blue
+property uchar alpha
+element face 191
+property list uchar uint vertex_indices
+end_header
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