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/**
******************************************************************************
* This file is part of the TouchGFX 4.10.0 distribution.
*
* @attention
*
* Copyright (c) 2018 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
#include <gui/animated_graphics_screen/BumpMapImage.hpp>
#include <touchgfx/EasingEquations.hpp>
BumpMapImage::BumpMapImage(BitmapId image_, const unsigned int* bump_map_, const unsigned char* light_source_) :
currentState(ANIMATE_AUTO),
image(image_),
//bump(BITMAP_LIGHT_EFFECT_IMAGE_ID),
bump(0),
bump_map(bump_map_),
light_source(light_source_),
currentTime(0),
catchTime(25),
lightPositionX(1000), // Set position outside the visible area
lightPositionY(1000),
tempPositionX(1000),
tempPositionY(1000)
{
Application::getInstance()->registerTimerWidget(this);
// Use these methods to convert and print a bitmap or light table
//printBumpMap();
//printLightTable();
}
BumpMapImage::~BumpMapImage()
{
Application::getInstance()->unregisterTimerWidget(this);
}
void BumpMapImage::handleTickEvent()
{
currentTime += 2;
tempPositionX = (int)(128.0f * cos((double)currentTime / 64)) - 20 + 160;
tempPositionY = (int)(128.0f * sin((double) - currentTime / 45)) + 20 + 110;
invalidateAccordingToCurrentLightSetting();
if (currentState == ANIMATE_AUTO)
{
lightPositionX = tempPositionX;
lightPositionY = tempPositionY;
}
else if (currentState == ANIMATE_CATCH)
{
if (catchTime > 0)
{
lightPositionX = lightPositionX + ((tempPositionX - lightPositionX) / catchTime);
lightPositionY = lightPositionY + ((tempPositionY - lightPositionY) / catchTime);
catchTime--;
}
else
{
catchTime = 25;
currentState = ANIMATE_AUTO;
}
}
invalidateAccordingToCurrentLightSetting();
}
void BumpMapImage::handleClickEvent(const ClickEvent& evt)
{
if (evt.getType() == ClickEvent::PRESSED)
{
setDragFinish(false);
}
else
{
setDragFinish(true);
}
}
void BumpMapImage::draw(const touchgfx::Rect& r) const
{
drawOptimized(r);
//drawNormal(r);
}
void BumpMapImage::drawOptimized(const touchgfx::Rect& r) const
{
// invalidatedArea is relative to enclosing container
Rect absoluteRect = r;
translateRectToAbsolute(absoluteRect);
// In case of an odd r.x draw() will also redraw r.x-1
// This is due to the fact that an uint32_t pointer is
// used for the imageData/FB pointers. This is chosen
// because of optimized performance.
// This issue does not affect this demo screen.
/*
assert(absoluteRect.x % 2 == 0);
assert(absoluteRect.width % 2 == 0);
assert(HAL::DISPLAY_WIDTH % 2 == 0);
*/
// Bump map slope information
int16_t nx;
int16_t ny;
int16_t lightCalculationPositionX;
int16_t lightCalculationPositionY;
uint32_t* fb = (uint32_t*)HAL::getInstance()->lockFrameBuffer();
const uint32_t* imageData = (const uint32_t*)(image.getData());
int offset;
uint16_t invalidatedY = absoluteRect.y;
uint16_t invalidatedX = absoluteRect.x;
uint32_t newValue = 0;
uint16_t imageDataValue = 0;
uint8_t lightDiff = 0;
uint8_t red = 0;
uint8_t green = 0;
uint8_t blue = 0;
uint32_t colorResult = 0;
int relativeX;
int relativeY;
int bumpMapInfo;
uint32_t pixelColorValues;
// Go through each invalidated pixel. For optimization reasons the pointers used are 32 bits,
// so each read yield values for two pixels.
for (int absoluteY = invalidatedY; absoluteY < absoluteRect.bottom(); absoluteY++)
{
// Set offset to point to the next line in the image bitmap and bump_map
offset = (absoluteY * image.getWidth() / 2) + (invalidatedX - getX()) / 2;
for (int absoluteX = invalidatedX; absoluteX < absoluteRect.right(); absoluteX += 2, offset += 1)
{
newValue = 0;
relativeX = absoluteX - getX();
relativeY = absoluteY - getY();
bumpMapInfo = bump_map[offset];
pixelColorValues = *(imageData + offset);
// Read the bump map value for the current pixel
// The bump map info is packed in a 32 bit format and need a bit of shifting
nx = (int8_t)(bumpMapInfo >> 24);
ny = (int8_t)((bumpMapInfo >> 16) & 0xFF);
// Calculate the pixels position in the light
lightCalculationPositionX = (relativeX - lightPositionX) + (lightSourceWidth / 2) + nx;
lightCalculationPositionY = (relativeY - lightPositionY) + (lightSourceHeight / 2) + ny;
//lightDiff = light(lightCalculationPositionX, lightCalculationPositionY);
// Get the light value that should be applied to the pixel
if (lightCalculationPositionX < 0 || lightCalculationPositionY < 0 || lightCalculationPositionX >= lightSourceWidth || lightCalculationPositionY >= lightSourceHeight)
{
lightDiff = 0;
}
else
{
// Value can be found in the precalculated light_source
lightDiff = light_source[lightCalculationPositionY * lightSourceWidth + lightCalculationPositionX];
}
// Get the actual color value from the 32 bit value (which contains two pixels) from the image
imageDataValue = pixelColorValues & 0xFFFF;
red = (imageDataValue & 0xF800) >> 11;
green = (imageDataValue & 0x07E0) >> 5;
blue = imageDataValue & 0x001F;
// Apply the light effect
if (lightDiff < lightMax / 2)
{
// Darken pixels that have no or a little extra light
red = red / 4 + (red - red / 4) * lightDiff / (lightMax / 2);
green = green / 4 + (green - green / 4) * lightDiff / (lightMax / 2);
blue = blue / 4 + (blue - blue / 4) * lightDiff / (lightMax / 2);
}
else
{
red = red + (31 - red) * (lightDiff - (lightMax / 2)) / (lightMax / 2);
green = green + (63 - green) * (lightDiff - (lightMax / 2)) / (lightMax / 2);
blue = blue + (31 - blue) * (lightDiff - (lightMax / 2)) / (lightMax / 2);
}
// Combine the colors and add them to the new color value for the pixel (packed together in a 32 bit value)
colorResult = (red << 11) | (green << 5) | blue;
newValue |= colorResult;
// Do the calculation for the second pixel in the 32 bit read
// Read the bump map value for the current pixel
nx = (int8_t)((bumpMapInfo >> 8) & 0xFF);
ny = (int8_t)(bumpMapInfo & 0xFF);
lightCalculationPositionX = (relativeX + 1 - lightPositionX) + (lightSourceWidth / 2) + nx;
lightCalculationPositionY = (relativeY + 1 - lightPositionY) + (lightSourceHeight / 2) + ny;
//lightDiff = light(lightCalculationPositionX, lightCalculationPositionY);
if (lightCalculationPositionX < 0 || lightCalculationPositionY < 0 || lightCalculationPositionX >= lightSourceWidth || lightCalculationPositionY >= lightSourceHeight)
{
lightDiff = 0;
}
else
{
lightDiff = light_source[lightCalculationPositionY * lightSourceWidth + lightCalculationPositionX];
}
imageDataValue = pixelColorValues >> 16;
red = (imageDataValue & 0xF800) >> 11;
green = (imageDataValue & 0x07E0) >> 5;
blue = imageDataValue & 0x001F;
if (lightDiff < lightMax / 2)
{
// Darken pixels that have no or a little extra light
red = red / 4 + (red - red / 4) * lightDiff / (lightMax / 2);
green = green / 4 + (green - green / 4) * lightDiff / (lightMax / 2);
blue = blue / 4 + (blue - blue / 4) * lightDiff / (lightMax / 2);
}
else
{
red = red + (31 - red) * (lightDiff - (lightMax / 2)) / (lightMax / 2);
green = green + (63 - green) * (lightDiff - (lightMax / 2)) / (lightMax / 2);
blue = blue + (31 - blue) * (lightDiff - (lightMax / 2)) / (lightMax / 2);
}
colorResult = (red << 11) | (green << 5) | blue;
newValue |= (colorResult << 16);
// Update framebuffer
*(fb + (absoluteX / 2) + (HAL::DISPLAY_WIDTH / 2 * absoluteY)) = newValue;
}
}
HAL::getInstance()->unlockFrameBuffer();
}
void BumpMapImage::drawNormal(const touchgfx::Rect& r) const
{
// invalidatedArea is relative to enclosing container
Rect absoluteRect = r;
translateRectToAbsolute(absoluteRect);
int8_t nx;
int8_t ny;
int16_t lightCalculationPositionX;
int16_t lightCalculationPositionY;
uint16_t* fb = HAL::getInstance()->lockFrameBuffer();
const uint16_t* imageData = (const uint16_t*) image.getData();
const uint16_t* bumpData = (const uint16_t*) bump.getData();
// we skip the first line since there are no pixels above to calculate the slope with
int offset = absoluteRect.x;
if (absoluteRect.y == 0)
{
while (offset < absoluteRect.width)
{
fb[offset++] = 0x0000;
}
offset += (HAL::DISPLAY_WIDTH - absoluteRect.width);
}
uint16_t invalidatedY = absoluteRect.y;
uint16_t invalidatedX = absoluteRect.x;
if (invalidatedX == 0)
{
invalidatedX = 1;
}
if (invalidatedY == 0)
{
invalidatedY = 1;
}
int relativeX;
int relativeY;
uint8_t lightDiff;
for (int absoluteY = invalidatedY; absoluteY < absoluteRect.bottom(); absoluteY++)
{
offset = (absoluteY * image.getWidth()) + invalidatedX - getX();
// likewise, skip first pixel since there are no pixels on the left
if (absoluteRect.x == 0)
{
fb[offset++] = 0;
}
for (int absoluteX = invalidatedX; absoluteX < absoluteRect.right(); absoluteX++, offset++)
{
relativeX = absoluteX - getX();
relativeY = absoluteY - getY();
/*
if (offset%2==0)
{
nx = (int8_t)(bump_map[offset/2] >> 24);
ny = (int8_t)((bump_map[offset/2] >> 16) & 0xFF);
}
else
{
nx = (int8_t)((bump_map[offset/2] >> 8) & 0xFF);
ny = (int8_t)(bump_map[offset/2] & 0xFF);
}*/
nx = height(bumpData[offset - 1]) - height(bumpData[offset]);
ny = height(bumpData[offset - image.getWidth()]) - height(bumpData[offset]);
lightCalculationPositionX = (relativeX - lightPositionX) + (lightSourceWidth / 2) + nx;
lightCalculationPositionY = (relativeY - lightPositionY) + (lightSourceHeight / 2) + ny;
//lightDiff = light(lightCalculationPositionX, lightCalculationPositionY);
if (lightCalculationPositionX < 0 || lightCalculationPositionY < 0 || lightCalculationPositionX >= lightSourceWidth || lightCalculationPositionY >= lightSourceHeight)
{
lightDiff = 0;
}
else
{
lightDiff = light_source[lightCalculationPositionY * lightSourceWidth + lightCalculationPositionX];
}
uint8_t red = (*(imageData + offset) & 0xF800) >> 11;
uint8_t green = (*(imageData + offset) & 0x07E0) >> 5;
uint8_t blue = *(imageData + offset) & 0x001F;
if (lightDiff < lightMax / 2)
{
red = red / 4 + (red - red / 4) * lightDiff / (lightMax / 2);
green = green / 4 + (green - green / 4) * lightDiff / (lightMax / 2);
blue = blue / 4 + (blue - blue / 4) * lightDiff / (lightMax / 2);
}
else
{
red = red + (31 - red) * (lightDiff - (lightMax / 2)) / (lightMax / 2);
green = green + (63 - green) * (lightDiff - (lightMax / 2)) / (lightMax / 2);
blue = blue + (31 - blue) * (lightDiff - (lightMax / 2)) / (lightMax / 2);
}
// Update framebuffer
*(fb + absoluteX + (HAL::DISPLAY_WIDTH * absoluteY)) = (uint16_t)((red << 11) | (green << 5) | blue);
}
}
HAL::getInstance()->unlockFrameBuffer();
}
void BumpMapImage::invalidateAccordingToCurrentLightSetting()
{
// Include an area around the light cone since these can also be illuminated
uint8_t margin = 66;
int16_t x = lightPositionX - (lightSourceWidth / 2) - margin;
if (x < 0)
{
x = 0;
}
// Place x on an even address
if (x % 2 == 1)
{
x--;
}
int16_t y = lightPositionY - (lightSourceHeight / 2) - margin;
if (y < 0)
{
y = 0;
}
uint16_t width = lightSourceWidth + 2 * margin;
uint16_t height = lightSourceHeight + 2 * margin;
// Ensure that the width is even
if (width % 2 == 1)
{
width++;
}
Rect newRect = Rect(x, y, width, height);
invalidateRect(newRect);
}
void BumpMapImage::setLightPosition(uint16_t x, uint16_t y)
{
lightPositionX = x;
lightPositionY = y;
invalidateAccordingToCurrentLightSetting();
}
void BumpMapImage::setDragFinish(bool finish)
{
if (finish)
{
currentState = ANIMATE_CATCH;
}
else
{
currentState = DRAGGING;
}
}
int BumpMapImage::height(uint16_t value) const
{
uint8_t red = (value & 0xF800) >> 11;
uint8_t green = (value & 0x07E0) >> 5;
uint8_t blue = value & 0x001F;
return red + green + blue;
}
Rect BumpMapImage::getSolidRect() const
{
return Rect(0, 0, getWidth(), getHeight());
}
#ifdef SIMULATOR
#include <iostream>
#include <fstream>
void BumpMapImage::printLightTable()
{
std::ofstream outputFile;
outputFile.open("lightTableTemp.txt");
uint32_t result;
outputFile << "const unsigned short _light_source[] = {\n ";
for (int y = 0; y < lightSourceHeight; y++)
{
for (int x = 0; x < lightSourceWidth; x++)
{
result = light(x, y);
outputFile << std::hex << "0x" << result;
if (!((x == lightSourceWidth - 1) && (y == lightSourceHeight - 1)))
{
outputFile << ", ";
}
}
}
outputFile << "\n};";
outputFile.close();
}
void BumpMapImage::printBumpMap()
{
std::ofstream outputFile;
outputFile.open("bumpMapTemp.txt");
int8_t nx;
int8_t ny;
//uint16_t *fb = HAL::getInstance()->lockFrameBuffer();
//const uint16_t *imageData = image.getData();
const uint16_t* bumpData = (const uint16_t*) bump.getData();
// we skip the first line since there are no pixels above to calculate the slope with
int offset = 0;
while (offset < image.getWidth() / 2)
{
outputFile << std::hex << "0x" << 0 << ", ";
offset++;
}
offset = image.getWidth();
uint32_t printValue = 0;
for (int y = 1; y < image.getHeight(); y++)
{
// likewise, skip first pixel since there are no pixels on the left
offset++;
for (int x = 1; x < image.getWidth(); x++, offset++)
{
nx = height(bumpData[offset - 1]) - height(bumpData[offset]);
ny = height(bumpData[offset - image.getWidth()]) - height(bumpData[offset]);
if (x % 2 == 0)
{
printValue |= (uint32_t)((((uint8_t)(nx) << 8) | (uint8_t)(ny)) << 16);
}
else
{
printValue |= ((uint8_t)(nx) << 8) | (uint8_t)(ny);
outputFile << std::hex << "0x" << printValue << ", ";
printValue = 0;
}
}
}
HAL::getInstance()->unlockFrameBuffer();
outputFile.close();
}
uint8_t BumpMapImage::light(int16_t x, int16_t y) const
{
if (x < 0 || y < 0 || x > lightSourceWidth || y > lightSourceHeight)
{
return 0;
}
uint16_t distToCenter = (uint16_t)(sqrt((float)((x - lightSourceWidth / 2) * (x - lightSourceWidth / 2) + (y - lightSourceHeight / 2) * (y - lightSourceHeight / 2))));
//uint16_t distToCenter = x - lightSourceWidth/2;
int16_t result = lightMax - distToCenter;
result = (result > 0) ? result : 0;
return (uint8_t) result;
}
#endif // SIMULATOR