akkartik/snap.love - Change VHT5NALKBXY6CZ2AJPLIJ33OSP5X2TF6GTDMIYXVKNIXPZXPAMAAC

new fork: driver (attempt #2) for live programs

Vision:

there's an infinite 2D surface to place definitions on, pan around, zoom in and out
there's a hierarchical box model for rectangles containing text and graphics that get rendered on the 2D surface, moving things around as needed to avoid overlap.

This commit adds the 2D surface with panning.

Created by Kartik K. Agaram on December 16, 2022

VHT5NALKBXY6CZ2AJPLIJ33OSP5X2TF6GTDMIYXVKNIXPZXPAMAAC

Dependencies

In channels

main

Change contents

Replacement in head at line 1 [3.10815]
B:BD[3.10815] → [2.60:62]
```
1
```
[3.10815]
```
14
```

File addition: 0014-on.update (----------)

[4.2]

on.update = function(dt)
	if Pan then
		Viewport.x = Pan.x - love.mouse.getX()
		Viewport.y = Pan.y - love.mouse.getY()
	end
end

File addition: 0014-manifest (----------)

[4.2]

{"vx":5,"vy":8,"on":1,"on.mouse_released":13,"scale":7,"on.mouse_pressed":12,"Surface":3,"on.update":14,"on.draw":11,"parent":14,"Viewport":6}

File addition: 0013-on.mouse_released (----------)

[4.2]

on.mouse_released = function(x,y, mouse_button)
	Pan = nil
end

File addition: 0013-manifest (----------)

[4.2]

{"vx":5,"vy":8,"on":1,"on.mouse_released":13,"scale":7,"on.mouse_pressed":12,"Surface":3,"on.draw":11,"parent":12,"Viewport":6}

File addition: 0012-on.mouse_pressed (----------)

[4.2]

on.mouse_pressed = function(x,y, mouse_button)
	Pan = {x=Viewport.x+x,y=Viewport.y+y}
end

File addition: 0012-manifest (----------)

[4.2]

{"vx":5,"vy":8,"on":1,"scale":7,"on.mouse_pressed":12,"Surface":3,"on.draw":11,"parent":11,"Viewport":6}

File addition: 0011-on.draw (----------)

[4.2]

on.draw = function()
	for _,obj in ipairs(Surface) do
		love.graphics.setColor(obj.r or 0, obj.g or 0, obj.b or 0)
		if obj.type == 'rectangle' then
			love.graphics.rectangle(obj.drawmode or 'fill', vx(obj.x),vy(obj.y), scale(obj.width),scale(obj.height))
		elseif obj.type == 'line' then
			if obj.saved_zoom ~= Viewport.zoom or obj.saved_x ~= Viewport.x or obj.saved_y ~= Viewport.y then
				obj.saved_zoom = Viewport.zoom
				obj.saved_x = Viewport.x
				obj.saved_y = Viewport.y
				obj.zdata = {}
				for i=1,#obj.data,2 do
					table.insert(obj.zdata, vx(obj.data[i]))
					table.insert(obj.zdata, vy(obj.data[i+1]))
				end
			end
			love.graphics.line(unpack(obj.zdata))
		elseif obj.type == 'circle' then
			love.graphics.circle(obj.drawmode or 'fill', vx(obj.x), vy(obj.y), scale(obj.radius))
		elseif obj.type == 'arc' then
			love.graphics.arc(obj.drawmode or 'line', obj.arctype or 'open', vx(obj.x), vy(obj.y), scale(obj.radius), obj.angle1, obj.angle2, obj.segments)
		elseif obj.type == 'ellipse' then
			love.graphics.ellipse(obj.drawmode or 'fill', vx(obj.x), vy(obj.y), scale(obj.radiusx), scale(obj.radiusy))
		elseif obj.type == 'text' then
			local scaled_fontsize = scale(obj.fontsize or 20)
			if obj.scaled_fontsize ~= scaled_fontsize then
				obj.scaled_fontsize = scaled_fontsize
				if Font == nil then Font = {} end
				if Font[scaled_fontsize] == nil then
					Font[scaled_fontsize] = love.graphics.newFont(scaled_fontsize)
				end
				obj.text = love.graphics.newText(Font[scaled_fontsize], obj.data)
			end
			love.graphics.draw(obj.text, vx(obj.x), vy(obj.y))
		elseif obj.type == 'bezier' then
			if obj.saved_zoom ~= Viewport.zoom or obj.saved_x ~= Viewport.x or obj.saved_y ~= Viewport.y then
				obj.saved_zoom = Viewport.zoom
				obj.saved_x = Viewport.x
				obj.saved_y = Viewport.y
				zdata = {}
				for i=1,#obj.data,2 do
					table.insert(zdata, vx(obj.data[i]))
					table.insert(zdata, vy(obj.data[i+1]))
				end
				obj.zdata = love.math.newBezierCurve(zdata):render()
			end
			love.graphics.line(unpack(obj.zdata))
		end
	end
end

File addition: 0011-manifest (----------)

[4.2]

{"on":1,"Surface":3,"vx":5,"vy":8,"Viewport":6,"on.draw":11,"parent":10,"scale":7}

File addition: 0010-on.draw (----------)

[4.2]

on.draw = function()
	for _,obj in ipairs(Surface) do
		love.graphics.setColor(obj.r or 1, obj.g or 1, obj.b or 1)
		if obj.type == 'rectangle' then
			love.graphics.rectangle(obj.drawmode or 'fill', vx(obj.x),vy(obj.y), scale(obj.width),scale(obj.height))
		elseif obj.type == 'line' then
			if obj.saved_zoom ~= Viewport.zoom or obj.saved_x ~= Viewport.x or obj.saved_y ~= Viewport.y then
				obj.saved_zoom = Viewport.zoom
				obj.saved_x = Viewport.x
				obj.saved_y = Viewport.y
				obj.zdata = {}
				for i=1,#obj.data,2 do
					table.insert(obj.zdata, vx(obj.data[i]))
					table.insert(obj.zdata, vy(obj.data[i+1]))
				end
			end
			love.graphics.line(unpack(obj.zdata))
		elseif obj.type == 'circle' then
			love.graphics.circle(obj.drawmode or 'fill', vx(obj.x), vy(obj.y), scale(obj.radius))
		elseif obj.type == 'arc' then
			love.graphics.arc(obj.drawmode or 'line', obj.arctype or 'open', vx(obj.x), vy(obj.y), scale(obj.radius), obj.angle1, obj.angle2, obj.segments)
		elseif obj.type == 'ellipse' then
			love.graphics.ellipse(obj.drawmode or 'fill', vx(obj.x), vy(obj.y), scale(obj.radiusx), scale(obj.radiusy))
		elseif obj.type == 'text' then
			local scaled_fontsize = scale(obj.fontsize or 20)
			if obj.scaled_fontsize ~= scaled_fontsize then
				obj.scaled_fontsize = scaled_fontsize
				if Font == nil then Font = {} end
				if Font[scaled_fontsize] == nil then
					Font[scaled_fontsize] = love.graphics.newFont(scaled_fontsize)
				end
				obj.text = love.graphics.newText(Font[scaled_fontsize], obj.data)
			end
			love.graphics.draw(obj.text, vx(obj.x), vy(obj.y))
		elseif obj.type == 'bezier' then
			if obj.saved_zoom ~= Viewport.zoom or obj.saved_x ~= Viewport.x or obj.saved_y ~= Viewport.y then
				obj.saved_zoom = Viewport.zoom
				obj.saved_x = Viewport.x
				obj.saved_y = Viewport.y
				zdata = {}
				for i=1,#obj.data,2 do
					table.insert(zdata, vx(obj.data[i]))
					table.insert(zdata, vy(obj.data[i+1]))
				end
				obj.zdata = love.math.newBezierCurve(zdata):render()
			end
			love.graphics.line(unpack(obj.zdata))
		end
	end
end

File addition: 0010-manifest (----------)

[4.2]

{"on":1,"Surface":3,"vx":5,"vy":8,"Viewport":6,"on.draw":10,"parent":9,"scale":7}

File addition: 0009-on.draw (----------)

[4.2]

on.draw = function()
	for _,obj in ipairs(Surface) do
		color(obj.r or 1, obj.g or 1, obj.b or 1)
		if obj.type == 'rectangle' then
			love.graphics.rectangle(obj.drawmode or 'fill', vx(obj.x),vy(obj.y), scale(obj.width),scale(obj.height))
		elseif obj.type == 'line' then
			if obj.saved_zoom ~= Viewport.zoom or obj.saved_x ~= Viewport.x or obj.saved_y ~= Viewport.y then
				obj.saved_zoom = Viewport.zoom
				obj.saved_x = Viewport.x
				obj.saved_y = Viewport.y
				obj.zdata = {}
				for i=1,#obj.data,2 do
					table.insert(obj.zdata, vx(obj.data[i]))
					table.insert(obj.zdata, vy(obj.data[i+1]))
				end
			end
			love.graphics.line(unpack(obj.zdata))
		elseif obj.type == 'circle' then
			love.graphics.circle(obj.drawmode or 'fill', vx(obj.x), vy(obj.y), scale(obj.radius))
		elseif obj.type == 'arc' then
			love.graphics.arc(obj.drawmode or 'line', obj.arctype or 'open', vx(obj.x), vy(obj.y), scale(obj.radius), obj.angle1, obj.angle2, obj.segments)
		elseif obj.type == 'ellipse' then
			love.graphics.ellipse(obj.drawmode or 'fill', vx(obj.x), vy(obj.y), scale(obj.radiusx), scale(obj.radiusy))
		elseif obj.type == 'text' then
			local scaled_fontsize = scale(obj.fontsize or 20)
			if obj.scaled_fontsize ~= scaled_fontsize then
				obj.scaled_fontsize = scaled_fontsize
				if Font == nil then Font = {} end
				if Font[scaled_fontsize] == nil then
					Font[scaled_fontsize] = love.graphics.newFont(scaled_fontsize)
				end
				obj.text = love.graphics.newText(Font[scaled_fontsize], obj.data)
			end
			love.graphics.draw(obj.text, vx(obj.x), vy(obj.y))
		elseif obj.type == 'bezier' then
			if obj.saved_zoom ~= Viewport.zoom or obj.saved_x ~= Viewport.x or obj.saved_y ~= Viewport.y then
				obj.saved_zoom = Viewport.zoom
				obj.saved_x = Viewport.x
				obj.saved_y = Viewport.y
				zdata = {}
				for i=1,#obj.data,2 do
					table.insert(zdata, vx(obj.data[i]))
					table.insert(zdata, vy(obj.data[i+1]))
				end
				obj.zdata = love.math.newBezierCurve(zdata):render()
			end
			love.graphics.line(unpack(obj.zdata))
		end
	end
end

File addition: 0009-manifest (----------)

[4.2]

{"on":1,"Surface":3,"vx":5,"vy":8,"Viewport":6,"on.draw":9,"parent":8,"scale":7}

File addition: 0008-vy (----------)

[4.2]

vy = function(y)
	return scale(y-Viewport.y)
end

File addition: 0008-manifest (----------)

[4.2]

{"on":1,"Surface":3,"vx":5,"vy":8,"Viewport":6,"on.draw":4,"parent":7,"scale":7}

File addition: 0007-scale (----------)

[4.2]

scale = function(d)
	return d*Viewport.zoom
end

File addition: 0007-manifest (----------)

[4.2]

{"Surface":3,"vx":5,"on":1,"Viewport":6,"on.draw":4,"parent":6,"scale":7}

File addition: 0006-manifest (----------)

[4.2]

{"Surface":3,"vx":5,"Viewport":6,"on.draw":4,"parent":5,"on":1}

File addition: 0006-Viewport (----------)

[4.2]

Viewport = {x=-50, y=-50, w=800,h=600, zoom=1.5}

File addition: 0005-vx (----------)

[4.2]

vx = function(x)
	return scale(x-Viewport.x)
end

File addition: 0005-manifest (----------)

[4.2]

{"Surface":3,"vx":5,"on.draw":4,"parent":4,"on":1}

File addition: 0004-on.draw (----------)

[4.2]

on.draw = function()
	for _,obj in ipairs(Surface) do
		color(obj.r or 1, obj.g or 1, obj.b or 1)
		if obj.type == 'rect' then
			rect(obj.drawmode or 'fill', vx(obj.x),vy(obj.y), scale(obj.width),scale(obj.height))
		elseif obj.type == 'line' then
			if obj.saved_zoom ~= Viewport.zoom or obj.saved_x ~= Viewport.x or obj.saved_y ~= Viewport.y then
				obj.saved_zoom = Viewport.zoom
				obj.saved_x = Viewport.x
				obj.saved_y = Viewport.y
				obj.zdata = {}
				for i=1,#obj.data,2 do
					table.insert(obj.zdata, vx(obj.data[i]))
					table.insert(obj.zdata, vy(obj.data[i+1]))
				end
			end
			line(unpack(obj.zdata))
		elseif obj.type == 'circle' then
			circ(obj.drawmode or 'fill', vx(obj.x), vy(obj.y), scale(obj.radius))
		elseif obj.type == 'arc' then
			love.graphics.arc(obj.drawmode or 'line', obj.arctype or 'open', vx(obj.x), vy(obj.y), scale(obj.radius), obj.angle1, obj.angle2, obj.segments)
		elseif obj.type == 'ellipse' then
			love.graphics.ellipse(obj.drawmode or 'fill', vx(obj.x), vy(obj.y), scale(obj.radiusx), scale(obj.radiusy))
		elseif obj.type == 'text' then
			local scaled_fontsize = scale(obj.fontsize or 20)
			if obj.scaled_fontsize ~= scaled_fontsize then
				obj.scaled_fontsize = scaled_fontsize
				if Font == nil then Font = {} end
				if Font[scaled_fontsize] == nil then
					Font[scaled_fontsize] = love.graphics.newFont(scaled_fontsize)
				end
				obj.text = love.graphics.newText(Font[scaled_fontsize], obj.data)
			end
			love.graphics.draw(obj.text, vx(obj.x), vy(obj.y))
		elseif obj.type == 'bezier' then
			if obj.saved_zoom ~= Viewport.zoom or obj.saved_x ~= Viewport.x or obj.saved_y ~= Viewport.y then
				obj.saved_zoom = Viewport.zoom
				obj.saved_x = Viewport.x
				obj.saved_y = Viewport.y
				zdata = {}
				for i=1,#obj.data,2 do
					table.insert(zdata, vx(obj.data[i]))
					table.insert(zdata, vy(obj.data[i+1]))
				end
				obj.zdata = love.math.newBezierCurve(zdata):render()
			end
			line(unpack(obj.zdata))
		end
	end
end

File addition: 0004-manifest (----------)
[4.2]
```
{"on.draw":4,"on":1,"Surface":3,"parent":3}
```
File addition: 0003-manifest (----------)
[4.2]
```
{"on":1,"Surface":3,"parent":2}
```

File addition: 0003-Surface (----------)

[4.2]

Surface = {
  -- test data
  {type='rect', x=50,y=50, width=20,height=80, r=1,g=0,b=0},
  {type='line', data={0,0, 0,600}},
  {type='line', data={0,0, 800,0}},
  {type='text', data='0', x=-20,y=-20},
  {type='circle', x=300,y=200, radius=40, r=1,g=0,b=1},
  {type='arc', x=0,y=0, radius=50, angle1=0, angle2=math.pi*2/3},
  {type='ellipse', x=100,y=100, radiusx=10, radiusy=50},
  {type='bezier', data={25,25, 25,125, 75,25, 125,25}},
}

File addition: 0002-manifest (----------)
[4.2]
```
{"on":1,"Surface":2,"parent":1}
```

File addition: 0002-Surface (----------)

[4.2]

Surface = {
  {type='rect', x=50,y=50, width=20,height=80, r=1,g=0,b=0},
  {type='line', data={0,0, 0,600}},
  {type='line', data={0,0, 800,0}},
  {type='text', data='0', x=-20,y=-20},
  {type='circle', x=300,y=200, radius=40, r=1,g=0,b=1},
  {type='arc', x=0,y=0, radius=50, angle1=0, angle2=math.pi*2/3},
  {type='ellipse', x=100,y=100, radiusx=10, radiusy=50},
  {type='bezier', data={25,25, 25,125, 75,25, 125,25}},
}

new fork: driver (attempt #2) for live programs

Dependencies

In channels

Change contents

Replacement in head at line 1 [3.10815]

File addition: 0014-on.update (----------)

File addition: 0014-manifest (----------)

File addition: 0013-on.mouse_released (----------)

File addition: 0013-manifest (----------)

File addition: 0012-on.mouse_pressed (----------)

File addition: 0012-manifest (----------)

File addition: 0011-on.draw (----------)

File addition: 0011-manifest (----------)

File addition: 0010-on.draw (----------)

File addition: 0010-manifest (----------)

File addition: 0009-on.draw (----------)

File addition: 0009-manifest (----------)

File addition: 0008-vy (----------)

File addition: 0008-manifest (----------)

File addition: 0007-scale (----------)

File addition: 0007-manifest (----------)

File addition: 0006-manifest (----------)

File addition: 0006-Viewport (----------)

File addition: 0005-vx (----------)

File addition: 0005-manifest (----------)

File addition: 0004-on.draw (----------)

File addition: 0004-manifest (----------)

File addition: 0003-manifest (----------)

File addition: 0003-Surface (----------)

File addition: 0002-manifest (----------)

File addition: 0002-Surface (----------)