71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
#pragma once
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#include "rtt.h"
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#include "texture.h"
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#include "shader.h"
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#include "shape.h"
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#include "brush.h"
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#include "action.h"
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NS_START
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class Canvas
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{
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Plane m_plane;
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BrushMesh m_mesh;
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bool m_dirty = false;
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public:
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bool m_erase = false;
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glm::mat4 m_mvp;
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glm::vec4 m_box;
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int m_width;
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int m_height;
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bool m_use_instanced = false;
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int m_current_layer_idx = 0;
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std::unique_ptr<Stroke> m_current_stroke;
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bool m_show_tmp = false;
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std::vector<Layer> m_layers;
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std::vector<int> m_order;
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RTT m_tmp;
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Texture2D m_tex;
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Texture2D m_tex2;
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Sampler m_sampler;
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Sampler m_sampler_bg;
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bool create(int width, int height);
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void resize(int width, int height);
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void layer_add(std::string name);
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void layer_order(int idx, int pos);
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void stroke_start(glm::vec2 point, float pressure, const ui::Brush& brush);
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void stroke_update(glm::vec2 point, float pressure);
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void stroke_draw();
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void stroke_end();
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void stroke_commit();
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void clear(const glm::vec4& color = { 1, 1, 1, 1 });
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};
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class ActionStroke : public Action
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{
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public:
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std::unique_ptr<Stroke> m_stroke;
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std::unique_ptr<uint8_t[]> m_image;
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glm::ivec4 m_box;
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int m_layer_idx;
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Canvas* m_canvas;
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virtual void run() override
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{
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}
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virtual void undo() override
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{
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m_canvas->m_layers[m_stroke->m_layer].m_rtt.bindTexture();
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glm::vec2 box_sz = m_box.zw() - m_box.xy();
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glTexSubImage2D(GL_TEXTURE_2D, 0, m_box.x, m_box.y, box_sz.x, box_sz.y, GL_RGBA, GL_UNSIGNED_BYTE, m_image.get());
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m_canvas->m_layers[m_stroke->m_layer].m_rtt.unbindTexture();
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}
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};
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NS_END
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